Affordance, usefulness, enjoyment, and aesthetics in sustaining virtual reality engagement

As virtual reality (VR) continues to develop, it's attracting an increasing number of consumers who are seeking more diverse functions and experiences. This study presents a theoretical model designed to identify predictors of VR users' continuance intentions. Data was collected from VR users who had firsthand experiences with the technology, and partial least squares structural equation modeling was employed to analyze this data. The results showed a significant correlation between functional affordance and perceived usefulness. Cognitive affordance was found to have a significant association with perceived usefulness, but it also influenced perceived enjoyment. Moreover, physical affordance significantly related to both perceived usefulness and enjoyment. Perceived usefulness was found to directly affect both attitude and continuance intention, while empirical results validated the impact of perceived enjoyment on attitude. The element of shape showed a significant correlation with attitude. Finally, attitude was found to have a significant association with continuance intention. The findings from this study will provide valuable insights for VR companies, developers, and consumers.


Theoretical background
VR technologies have been widely researched in various fields.Researchers have noted that VR technologies hold the potential to revolutionize the way we interact with digital information, offering a more immersive and engaging experience.These technologies can amplify our senses, ushering in new methods for learning, working, and playing.In this section, we'll delve into research studies that have explored user behavior, affordance, and aesthetics in relation to VR.

VR user behavior.
Numerous researchers have probed the determinants of behavioral intention among VR users [39][40][41] .Shen et al. 42 utilized the unified theory of acceptance and use of technology (UTAUT) to delineate behaviors associated with VR learning.Their empirical results reveal that behavioral intention in VR learning is influenced by factors such as concrete experience, performance expectancy, effort expectancy, social influence, and facilitating conditions.Désiron et al. 43 examined determinants of performance and behavioral intention of VR users within the realm of infection prevention.They highlighted that both prior effort expectancy and intraining user engagement play significant roles in influencing performance.Shin 44 furnished evidence asserting that enhanced usability aids learnability by fostering increased empathy and embodiment within VR learning environments.Like other hedonic Information Systems, VR devices cater to users' entertainment needs 45,46 .Kang et al. 47 analyzed the media content of BTS, a Korean pop boy band, establishing six distinct groups such as VR video with a headset, news articles, control, among others.The researchers determined a pronounced discrepancy in engagement between the VR headset and news article groups, particularly in the context of immersion in BTS's content.Al-Sharafi et al. 48employed a hybrid SEM-ANN methodology to assess the influence of psychological, social, and quality parameters on the continuous intention to use VR meeting platforms.They confirmed that these factors considerably influence users' continued intent to engage with virtual meeting platforms.Emphasizing the element of entertainment, Hartmann 45 posited that it remains paramount in VR experiences.The author suggested that VR allows users to experience pleasurable expansions of self, even outside narrative contexts.Consequently, factors such as perceived usefulness and enjoyment play pivotal roles in shaping users' attitudes and intentions to continue using VR.
Aesthetics.Aesthetics, a key factor in the realm of marketing, captivates consumers and serves as a distinguishing feature amongst brands [60][61][62] .Researchers, such as Wiecek et al. 63 , emphasize that aesthetics greatly mold customer preferences during product selection.Jiang et al. 64 argue for the role of aesthetics in fostering continuance intention among virtual shoppers via attitude.Homburg et al. 65 through a survey of U.S. consumers, accentuated the capability of aesthetics in amplifying purchase intentions and facilitating positive wordof-mouth (WOM).IT research has also endorsed aesthetics' centrality in charting user behavior patterns.For instance, Toufani et al. 33 acknowledged aesthetics, encompassing facets like color, design, and shape, as a significant determinant of purchase intentions through emotional and social value within the smartphone domain.Sabir 62 contends that aesthetics play a dual role in enhancing smartphone user satisfaction.
A pivotal aesthetic component of VR is the headset design.Its size, shape, and weight directly influence user comfort and immersion.Kim et al. 66 highlighted user preference for headsets that are lightweight and adaptable.Additionally, Katz and Sugiyama 67 showed that modern, sleek headset designs enhance user perceptions of technology sophistication.Parallelly, the visual aesthetics of VR environments critically shape user experiences.The graphic fidelity and meticulousness impact immersion levels, as evidenced by Slater et al. 68 , who noted a preference for realism.Furthermore, haptic feedback-vibrations or force feedback-intensifies immersion.Lécuyer 69 showcased user preference for synchronized, authentic haptic feedback.The VR environment's color and layout also influence experiences, with Tussyadiah et al. 70 noting the profound impact of color on user emotions.
Several researches underscore aesthetics' significance in marketing 71,72 and IT 30,73 .With this backdrop, our research endeavors to delve into VR aesthetics, aiming to glean insights about consistent VR utilization.In essence, aesthetic considerations in VR gear, be it headset design or visual environments, emerge as paramount in sculpting user experiences, attitudes, and continuance intentions.
Ethical approval.This study was approved by an institutional review board of HJ Institute of Technology and Management.All methods were performed in accordance with the relevant guidelines and regulations.This research was performed in accordance with the Declaration of Helsinki.

Informed consent.
Informed consent was obtained from all individual participants included in the study.

Research model
Figure 1 presents a research model of this research.This study posits that functional affordance influences perceived usefulness.It suggests that cognitive affordance and physical affordance are the primary antecedents of both perceived usefulness and perceived enjoyment.The research further indicates that attitude is molded by perceived usefulness, perceived enjoyment, aesthetics, and shape.Finally, it proposes that continuance intention is driven by attitude and perceived usefulness.
Functional affordance.Functional affordance is described as a design element that aids users in performing tasks (i.e., the usefulness of a system function) 53 .It gives users high usefulness and fulfills the purpose of user behaviors 53 .Within the context of technological interfaces, functional affordance directly correlates with users' perceptions regarding the utility of a specific platform or tool.According to 74 , perceived usefulness is a significant predictor of technology acceptance, and it is largely influenced by the functionality and capabilities of the tool in question.Moreover, when users identify high levels of functional affordance within a system, they often believe that using the system will enhance their task performance 75 .Specifically, in the realm of VR, when VR platforms provide clear functional affordances, users tend to perceive them as more useful for their intended tasks 76,77 .Functional affordances have a significant and positive influence on user satisfaction and UX in the domain of VR 78 .The logical extension of these findings is that an increased sense of functional affordance would positively influence perceptions of usefulness.Hence, this study posits the following hypothesis.
H1 Functional affordance has a positive impact on perceived usefulness.

Cognitive affordance.
Cognitive affordance refers to those aspects of an interface or system design that facilitate mental processes and understanding, guiding users in their interactions 53 .The clarity, intuitiveness, and informational support offered by an interface can help users think, reason, and understand the content or the tasks they are involved in.Within the context of technological adoption, perceived usefulness is one of the foundational determinants.Cognitive affordance, by simplifying complex tasks and enhancing user understanding, can positively influence this perception.When users find an interface cognitively supportive, they are more likely to see it as beneficial for their intended purposes 79 .On a similar note, the enjoyment derived from using a technology is influenced by the ease of understanding and seamless interactions.Systems with higher cognitive affordance tend to reduce cognitive load and frustration, thereby increasing the pleasure and enjoyment of the user experience 80 .Hence, a robust cognitive structure and guidance can enhance both the perceived usefulness and enjoyment for users.Thus, this study suggests the following hypotheses.
H2a Cognitive affordance has a positive impact on perceived usefulness.H2b Cognitive affordance has a positive impact on perceived enjoyment.

Physical affordance.
Physical affordance refers to those design features of an interface or system that amplify or simplify physical interactions 53 .The effectiveness of such design elements is often gauged through their ability to enhance interface navigation, user-friendly layout, and intuitive iconography, especially in IT devices 14 .As posited by 13 , mobile application interfaces frequently integrate physical affordances, aiming to stimulate user engagement and actions.Within the realm of VR, the significance of physical affordance becomes even more pronounced.Interfaces that encompass pronounced and responsive menus, buttons, or touchpoints facilitate more seamless user interaction 78 .Such tangible and responsive design elements not only bolster the ease of interaction but also elevate the user's perception of the system's utility.Moreover, when users encounter a physically intuitive VR environment, the level of enjoyment and immersion they experience tends to heighten 81 .Drawing on these perspectives, when users engage with interfaces that offer favorable physical affordances, they are likely to derive both utility and pleasure.Thus, this study suggests the following hypotheses.
H3a Physical affordance has a positive impact on perceived usefulness.H3b Physical affordance has a positive impact on perceived enjoyment.
Perceived usefulness.Perceived usefulness is articulated as an individual's firm belief in the utility offered by a particular technology 16 .This belief acts as a cornerstone for technology adoption and usage across diverse www.nature.com/scientificreports/settings, as confirmed by extensive literature [82][83][84][85] .Apart from acting as a precursor for technology uptake, perceived usefulness is instrumental in molding user attitudes 20 and fortifying the intention to continue using the technology 86,87 .Within the specialized domain of VR, performance expectancy, which closely aligns with perceived usefulness, has been recognized as a significant determinant influencing user intentions 42 .Further studies on VR environments have reiterated the impact of perceived usefulness on user behavioral intentions 88,89 .In scenarios where VR extends meaningful and pragmatic support, users tend to harbor favorable impressions and exhibit sustained usage.Drawing from these insights, the present research contends that perceived usefulness will cast a positive effect on both attitude and the intent to persist with VR technology.Thus, this study suggests the following hypotheses.
H4a Perceived usefulness has a positive impact on attitude.
H4b Perceived usefulness has a positive impact on continuance intention.
Perceived enjoyment.Perceived enjoyment encapsulates the pleasure derived from employing a specific IT 75 .This intrinsic pleasure, apart from being a source of hedonic value, manifests as a driving force for individuals' behavioral intentions 82,[90][91][92] .The continuance intention, or the sustained desire to use a technology, is also propelled by this perception of enjoyment 93 .Moreover, when examining attitudes towards IT tools and systems, it becomes evident that enjoyment plays a crucial role in shaping positive perceptions 24,94,95 .Within the realm of VR, the sentiment remains consistent.Users who derive pleasure from their VR experiences invariably cultivate a favorable outlook towards the technology, as illuminated by research conducted by Jiang et al. 64 .Thus, this study suggests the following hypotheses.
H5 Perceived enjoyment has a positive impact on attitude.
Aesthetics.Aesthetics, characterized by elements of harmony, order, and beauty in tangible realms, is articulated by 96 .This element is not merely decorative but stands as a decisive factor when consumers make product choices, a sentiment echoed by research from 97 and 98 .Notably, the visual appeal or screen aesthetics has the potency to elevate user satisfaction, courtesy of the pleasure derived therein, as evidenced by the findings of Liu et al. 99 .Delving into attitudes formed towards electronic gadgets, it becomes clear that aesthetics is instrumental, a perspective reinforced by Hsiao and Chen 98 .Within the expansive realm of VR, a sophisticated aesthetic design plays an integral role.As research by Jiang et al. 64 postulates, a heightened aesthetic perception within VR environments can boost positive attitudes.The immersive and vivid nature of VR, when accentuated with splendid color palettes and designs, can significantly sway users' perceptions.Thus, this study suggests the following hypotheses.
H6 Aesthetics has a positive impact on attitude.

Shape.
The shape of a device, especially in the context of VR, is not merely a matter of physical configuration; it serves as a reflection of ergonomic considerations, design principles, and user aesthetics, profoundly influencing the user's interaction with the device.White 96 highlights the broader understanding of aesthetics, indicating that harmonious designs can elicit positive reactions.Further delving into product design, Bigoin-Gagnan and Lacoste-Badie 97 underscore the primacy of design elements, including shape, in driving product selection among consumers.The relationship between device shape and users' attitudes is also given credence by Hsiao and Chen 98 , who establish that pleasing design characteristics foster more favorable attitudes towards electronic devices.In the realm of VR, the physical form of the device can significantly shape users' experiences, as postulated by Jiang et al. 64 .A VR device with a shape that resonates with user preferences might bolster their affinity for it, thus potentially enhancing their overall attitude.Thus, this study suggests the following hypotheses.
H7 Shape has a positive impact on attitude.

Attitude.
Attitude is articulated as a person's evaluative judgement concerning a particular occurrence or entity, a definition rooted in the work of Ajzen 100 .This personal stance, as depicted by numerous research, endeavors plays a pivotal role in molding behavioral intention 95,[101][102][103] .Taking a closer glimpse into the VR realm, attitude emerges as an influential determinant in shaping continuance intention.This correlation is fortified by studies such as those conducted by 64 , Lin 104 and Qin et al. 105 .Users who harbor a more pronounced positive attitude towards VR are more inclined to consistently engage with the technology, underlining its impact on long-term utilization.Thus, this study suggests the following hypotheses.
H8 Attitude has a positive impact on continuance intention.

Research methodology
Measurements.To the extent possible, this study adapted constructs from measurement scales used in prior studies to fit the VR case.The questionnaire was first written by the authors.A Korean professional who is fluent in English translated a questionnaire in English into Korean.The survey results were translated back into English.The two English versions of the questionnaire had only slight differences that were adjusted by the author.Before performing the main survey, the questionnaire indicators were confirmed by three researchers in the IS and marketing fields.All constructs except for demographic information and frequency were gauged using a 7-point Likert scale with suitable ranges.Table A1 shows all the measurement items for the constructs.
Sample.An online survey was employed to gather the data for the current work.The survey approach enables the generalizability of results, replication of findings, and concurrent evaluation of various elements 106 .This research employed a purposive sampling technique to select the study participants.Purposive sampling, also known as judgmental, selective, or subjective sampling, is a non-probability sampling method that is characterized by the use of discretion in selecting the participants who are most able to contribute valuable data 107 .In this context, our target population consisted of individuals with prior experience using VR, which justified our use of purposive sampling.Before the main survey, a pilot test was conducted to ensure the reliability and validity of the research instrument.A group of 15 participants, who fit the demographic of our target population, was selected for the pilot test.The feedback from the pilot test was used to refine the survey instrument, enhancing its reliability and validity 108 .The online link to the questionnaire was delivered to a diverse population including office workers, university students, and researchers.Participation in the survey was voluntary.After removing incomplete responses, the remaining 240 responses were used for the data analysis.Table 1 presents demographic data from 240 study respondents.Participants were mostly male (55.8%, n = 134) with a substantial female minority (44.2%, n = 106).Respondents were largely in their 30s (48.3%, n = 116), followed by those in their 20s (26.7%, n = 64) and 40s (16.7%, n = 40).The 10s and 50s age groups were the smallest, comprising only 5% (n = 12) and 3.3% (n = 8) respectively.The VR devices used varied: Oculus was the most popular (44.6%, n = 107), followed by SONY (34.2%, n = 82), HTC (12.5%, n = 30), and DPVR (2.5%, n = 6).Respondents using other VR models comprised 6.3% (n = 15) of the total.

Results
The present study analyzed the theoretical framework using the partial least squares structural equation modeling (PLS-SEM) method with SmartPLS 3 109 .The method is adequate for complex research models with a lot of constructs 110 .Additionally, the PLS is advised for prediction frameworks that concentrate on clarifying the major precursors 111 .
Common method bias.Potential bias arising from common methods was a concern in this study, given that data were collected using a single method and at a single point in time.Firstly, the variance inflation factor (VIF) was calculated for each item, with the maximum value found to be 6.027, comfortably below the threshold of 10, indicating no multicollinearity issues 112 .Second, as a supplementary analysis, we conducted the marker variable procedure 113 .Given the lack of multicollinearity and results of the marker variable procedure, the risk of common method bias seems minimal in this study.
Measurement model.Cronbach's alpha and composite reliability (CR) were used to assess the reliability of the model.Both the results for Cronbach's alpha and CR exceeded 0.7, demonstrating the model's reliability 114 .Convergent validity was assessed using item loadings and the average variance extracted (AVE).All factor loadings were significant and exceeded 0.7.The AVE surpassed the recommended threshold of 0.5, establishing convergent validity 115 .Table 2 displays the test results for reliability and validity.
Discriminant validity, which determines the extent to which a construct is truly distinct from other constructs, was evaluated in this study through the Fornell and Larcker criterion 116 and the Heterotrait-Monotrait ratio (HTMT) 117 .The Fornell and Larcker criterion suggests that the square root of the AVE for each construct should be greater than the correlation shared with any other construct.As shown in Table 3, the square root of the AVE (diagonal values) for each construct is larger than its highest correlation with any other construct, thereby confirming discriminant validity.www.nature.com/scientificreports/On the other hand, the HTMT values are preferably less than 0.90 117 .However, as displayed in Table 4, a few HTMT values exceed the threshold of 0.90.The HTMT criterion is more conservative than the Fornell & Larcker criterion.Thus, exceeding the threshold in HTMT does not immediately imply a serious discriminant validity problem, particularly when Fornell & Larcker criterion and factor loadings suggest adequate discriminant validity 118 .Additionally, HTMT and Fornell & Larcker criterion are supplementary and should not be used as a standalone criterion 117 .Given that the Fornell & Larcker criterion confirmed discriminant validity and the loading of items on their intended constructs was satisfactory, we proceeded with the testing of the structural model.
Following the guidelines proposed by Henseler et al. 117 , we assessed the fit through SRMR, dULS, and dG values.The standardized root mean residual (SRMR) values for the saturated and estimated models were 0.123 and 0.129, respectively.The values of dULS and dG, 4.900 and 3.842 for the saturated model, and 5.398 and 4.099 for the estimated model.Furthermore, the normed fit index (NFI) was 0.560 for the saturated model and 0.537 for the estimated model.The chi-square difference was 4045.533 for the saturated model and 4260.839 for the estimated model, further confirming the model fit 117 .ducted the Bias-corrected and Accelerated (Bca) bootstrap approach (5000 resamples).As shown in Fig. 2, nine of the eleven paths in the research model are supported.This research investigated adjusted R 2 , which means the variance described by the model that defines the quality of the overall model 115 .Henseler and Sarstedt 119 regard R 2 values of 0.67, 0.33, and 0.19 as substantial, moderate, and weak, each.In our model, the R 2 scores for endogenous constructs were as follows: Perceived usefulness (0.75, substantial), perceived enjoyment (0.59, moderate), usage (0.69, attitude), and continuance intention (0.62, substantial).
Table 5 details the results of the structural model, elucidating the relationships between various constructs and their respective hypotheses.Hypothesis H1, positing the influence of Functional Affordance on Perceived Usefulness, is supported.H2a, suggesting Cognitive affordance's effect on perceived usefulness, is also supported, whereas H2b, asserting the effect of Cognitive affordance on perceived enjoyment, is not supported.H3a and H3b, indicating the influence of Physical affordance on perceived usefulness and perceived enjoyment, respectively, are both supported.The table further confirms the validity of H4a and H4b, showing significant associations between Perceived usefulness and both attitude and continuance Intention.H5, linking perceived enjoyment to Attitude, is supported, while H6, suggesting an influence of aesthetics on attitude, is not supported.Hypothesis H7, postulating an impact of Shape on Attitude, is supported.Finally, H8, detailing the relationship between attitude and continuance intention, is supported.

Discussion
In our study, we aimed to explore the correlation between key elements of VR, including affordance, usefulness, enjoyment, aesthetics, and shape, and users' continuance intention.The analysis yielded several significant findings, which have important theoretical and practical implications.A significant relationship emerged between the functional affordance of VR and perceived usefulness.This implies that when users perceive VR tools as having the capability to provide them with the means to accomplish certain tasks efficiently, they are more likely to find these tools useful.This aligns with prior studies that emphasized the importance of functionality in technology acceptance 76,77 .In the context of VR, this suggests that for a user to embrace this technology, the VR system needs to offer more than just immersive experiences; it should provide functional value that aids users in achieving their objectives.
The significant relationship identified between cognitive affordance and perceived usefulness suggests that when VR tools or other interfaces are designed to align with the user's cognitive processes, these tools are more likely to be deemed useful.This means that systems that align well with human cognition facilitate understanding, reduce cognitive load, and subsequently enhance the perception of the tool's utility.These findings resonate with established theories such as the cognitive load theory, which emphasizes the importance of managing cognitive processes to enhance learning and task performance 120 .In practical terms, designers and developers should prioritize creating interfaces that naturally fit users' cognitive patterns, making the technology more intuitive and thereby more useful.However, our findings also indicate a non-significant relationship between cognitive affordance and perceived enjoyment.This suggests that while aligning a tool with cognitive processes can make it useful, it doesn't necessarily translate into it being enjoyable or entertaining.This is a crucial distinction, especially in contexts where the primary objective is user engagement or entertainment.It implies that merely making a tool cognitively coherent might not suffice in making it pleasurable.This can be attributed to the multifaceted nature of enjoyment, which can be influenced by various factors ranging from aesthetics, novelty, interactive feedback, or personal interests.As highlighted in prior work, perceived enjoyment often transcends utility and can be driven by hedonic, emotional, and sensory aspects 27 .
The results of this study underscore the significant relationship between physical affordance and perceived usefulness.When a VR tool or system integrates physical affordances effectively, it naturally aligns with the user's instincts and expectations, making it easier to navigate, understand, and extract value.This intuitive design enhances the perception of the tool's utility, as users can seamlessly integrate it into their tasks without unnecessary cognitive disruptions.This revelation is consistent with prior studies, which have stressed the vital role of user-friendly designs in determining the perceived value of a digital tool 13,50 .Therefore, designers and developers should emphasize optimizing the physical affordance in VR tools to ensure maximum user adaptability and perceived usefulness.Simultaneously, our findings suggest a significant relationship between physical affordance and perceived enjoyment.This is indicative of the broader implications of physical design elements beyond mere functionality.An interface or system that boasts superior physical affordances is not just easier to use; it also makes the experience more engaging, delightful, and enjoyable.The tactile and physical interactions, when designed well, can stimulate a sense of immersion, playfulness, and satisfaction, crucial for the overall user experience.Such insights echo the sentiments of prior research that underscores the role of holistic design in determining both the utility and pleasure derived from interactive tools 81,121 .
Our study has revealed a significant correlation between perceived usefulness and attitude towards the technology in question.This outcome substantiates the foundational belief that when users discern a technology as beneficial and conducive to their needs, they are more likely to develop a positive attitude towards it.The theoretical underpinning of this result can be traced back to the TAM 16 , which posits perceived usefulness as a primary predictor of user attitude.Essentially, the more users perceive a technology as adding value or making their tasks easier, the more favorably they view it.This provides actionable insight for designers and developers: to foster positive attitudes, one must prioritize the creation and communication of tangible benefits and efficiencies in the technological solutions they offer.Additionally, our analysis also showcases the role of perceived usefulness in influencing continuance intention.Once users recognize the value of a tool (its perceived usefulness), www.nature.com/scientificreports/they are not only likely to adopt it but also more inclined to continue using it in the long run.This finding aligns with previous research that emphasized the role of perceived benefits in ensuring sustained user engagement and loyalty 92,122,123 .In essence, perceived usefulness doesn't just affect initial adoption-it has ramifications on the lifecycle of user interaction with the technology.Our findings confirm that perceived enjoyment significantly influences users' attitudes.This suggests that beyond the instrumental benefits of a technology, the experiential and hedonic qualities it offers play a pivotal role in shaping users' overall impressions.This result is consistent with previous research that underscores the role of enjoyment as an intrinsic motivation in using technology 24,82,[90][91][92] .When users find an interface or a platform pleasurable and fun, they are more likely to develop a positive attitude towards it, regardless of its practical functionalities.This association between perceived enjoyment and attitude also resonates with the broader consumer behavior literature, where positive emotional experiences with a product or service often translate into favorable attitudes and, consequently, increased likelihood of repeated use or purchase 124 .In the context of VR, which is inherently interactive and immersive, this link becomes even more pronounced.The sensory-rich experiences that VR platforms offer can amplify the pleasure derived from usage, and as our results indicate, this enjoyment is a strong predictor of positive attitudes.For developers and designers in the VR space, this underscores the importance of integrating elements that enhance enjoyment.While functionality and utility are undeniably vital, they should be complemented with features that elevate the user's hedonic experience.
Contrary to expectations and conventional wisdom that suggests that aesthetics play a significant role in influencing users' attitudes towards technology, our study indicates no significant relationship between the two.This divergence from the established understanding might be attributed to several reasons.One plausible explanation could be the evolving definition of aesthetics in the VR realm.Unlike traditional user interfaces where aesthetics might be equated with visual appeal, in VR, the immersive experience might overshadow the aesthetic attributes.Users might prioritize immersive quality, interactivity, or realism over visual aesthetics per se 125 .Another perspective might be the subjective nature of aesthetics.What is deemed aesthetically pleasing to one user might not resonate with another, making it a less consistent determinant of attitude compared to more objective measures.On the other hand, the influence of the shape of the VR device on attitude is pronounced.This finding emphasizes the tangible aspects of VR experiences.The shape, as a tangible attribute, has direct implications on the user's comfort, usability, and overall interaction experience.A well-designed VR device, in terms of its shape, can enhance the ergonomic experience, leading to prolonged usage and positive attitudes 126 .This suggests that while users might have evolving preferences for visual elements, the physical comfort and ease of use remain paramount.
Our findings underscore the significant influence of user attitudes on their continuance intention in the context of VR.Historically, the theory of reasoned action (TRA) and its successor, the theory of planned behavior (TPB), have posited that an individual's attitude towards a behavior directly impacts their intention to perform that behavior 127,128 .Drawing parallels from these theories, our study suggests that when users have a positive attitude towards a VR system, they are more likely to continue using it in the future.This is intuitive; a positive attitude often stems from favorable experiences, perceived usefulness, and overall satisfaction derived from the technology.There are several layers to this relationship.A favorable attitude might be shaped by ease of use, immersive experience, perceived benefits, and the absence of technical glitches or discomfort while using VR.When users have such affirmative experiences, they develop a positive disposition towards the system, making them more inclined to continue using it 74 .However, it's worth noting that while attitude is a strong predictor, it's not the sole determinant of continuance intention.Other external factors such as alternative technologies, social influence, or changes in personal circumstances can also influence the decision to continue using VR, even if one has a positive attitude towards it.For practitioners, understanding the pivotal role of attitude can guide strategies to enhance user experiences.Ensuring initial positive interactions with VR, addressing pain points promptly, and continuously innovating to match user expectations can help in cultivating a positive attitude, which, in turn, can lead to sustained usage.

Conclusion
Implications for theory.The rapid evolution of VR has constantly reshaped our understanding of its impacts on user behaviors and perceptions.As we dive deeper into the realm of VR, we uncover layers of theoretical insights that challenge pre-existing knowledge.This research endeavors to provide a detailed theoretical contribution, by drawing comparisons with earlier studies and highlighting what this investigation uniquely brings to the table.Our first key contribution lies in distinguishing between cognitive and physical affordances and their implications for VR users.Historical research predominantly homogenized affordances, treating them as a single unit impacting user perceptions [35][36][37] .However, our study intricately dissects this premise.By addressing this gap, this paper offers a novel perspective on the use of VR devices.In this paper, the effect of affordance in building the continuance intention was verified by focusing on the fact that a significant part of the VR experience is conveyed through the screen.Drawing from the research findings, we can conclude the following in response to our research questions: Functional affordance is a significant driver for perceived usefulness in a VR setting, establishing its foundational role in the user experience.Both cognitive and physical affordances have nuanced roles, where cognitive affordance predominantly influences perceived usefulness, while physical affordance greatly impacts perceived enjoyment.Intricacies in the relationship between perceived usefulness, perceived enjoyment, aesthetics, and shape have been identified, showing that together they form a cohesive framework that shapes a user's attitude towards VR.Importantly, this constructed attitude, when paired with perceived usefulness, significantly determines a user's continuance intention with VR technology, emphasizing the essential interplay of these factors in influencing sustained VR engagement.Therefore, researchers need to design a classification system for screen composition more efficiently.It is valuable to configure the components www.nature.com/scientificreports/ of the screen to be more perceptible and physically accessible.Unlike small displays of mobile devices such as smartphones and tablets, VR screens are relatively large that users encounter.It would be meaningful if researchers set the arrangement and size of the components at various levels and then explore the case where the user's response is optimal.This granular understanding paves the way for a more refined approach to studying affordances, prompting future research to consider the multifaceted nature of VR experiences.Within the burgeoning domain of VR design, the aesthetic paradigm has long been at the forefront, guiding user attitudes and preferences.Seminal works such as those by 129 , and 130 have articulated the paramount significance of aesthetics in shaping user perspectives towards technological innovations.However, challenging this entrenched belief, our research offers an alternative viewpoint.We posit that the actual shape of VR devices holds a more potent sway in determining user attitudes than previously emphasized aesthetic considerations.This revelation underscores a pivotal paradigm shift.It compels scholars to recalibrate their theoretical frameworks and urges industry professionals to rethink their design strategies.By emphasizing the form factor, or the shape of the device, our findings hint at the possibility of it outweighing the traditionally vaunted aesthetics.This doesn't merely allude to a visual appeal, but extends to the tactile and ergonomic appeal that a device's shape can offer.
Lastly, the relationship between user perceptions, attitudes, and intentions has been a cornerstone of behavioral studies for decades.The TRA and the TPB set forth by Ajzen 127 and furthered by Ajzen 128 have provided foundational insights into these interconnections.However, the rapid evolution and idiosyncrasies of the VR ecosystem call for a more specialized approach to understanding these relationships.Our investigation refines the existing paradigm, revealing that in the VR context, perceived usefulness extends its influence beyond attitudes.Not only does it directly shape attitudes, but it also sets the stage for continuance intentions 82,87,131 , mediated by those very attitudes.Furthermore, the potency of perceived enjoyment in shaping attitudes is clearly demarcated in our findings.Yet, its direct contribution to continuance intention remains subtle and less profound.This layered understanding amplifies the multifaceted dynamics at play within the VR environment.For scholars, it signals the pressing need to evolve beyond traditional models, crafting theories more attuned to the intricate interplay of perceptions, attitudes, and intentions inherent in cutting-edge technologies like VR.
Conclusively, as the frontier of VR technology advances at a breathtaking pace, it beckons a reimagining of theoretical underpinnings that guide our understanding of it.Our study accentuates the pivotal need to break free from the confines of broad, overarching theories that might have been conceived within the context of older technological paradigms.While such theories offer valuable foundational insights, they might fall short in capturing the nuances and intricacies specific to the contemporary VR landscape.Generalized theoretical assumptions risk oversimplifying the multifaceted interactions and implications that VR presents.The findings from our investigation urge scholars to adopt a more nimble and adaptable theoretical stance, continually calibrating their research frameworks to stay attuned to the ever-evolving intricacies of VR.As we tread further into the realm of VR, it's paramount for academic endeavors to be in tandem with the shifting sands of this technology, ensuring that the research remains both relevant and insightful in the face of VR's transformative journey.

Implications for practice.
The revelations stemming from our research distinctly highlight the differences between cognitive and physical affordances within the VR domain.Specifically, while cognitive affordances carve their niche, it's the physical affordances that manifestly influence both the perceived utility and the pleasure users derive from VR.For service providers and product manufacturers in the VR ecosystem, these insights are paramount.Traditional models that advocate a generalized approach may not harness the full potential of VR's multifaceted environment.For educational VR platforms, the emphasis should tilt towards cognitive affordances.A platform equipped with an intuitive interface, for instance, could drastically augment the perceived usefulness, rendering the learning experience more seamless for students 85 .On the flip side, VR platforms designed for entertainment or gaming should pivot towards enhancing physical affordances.Incorporating tangible features, such as haptic feedback, can elevate the immersive experience, driving user satisfaction and overall enjoyment 132 .
Diving into the intricate facets of VR usability and design, it becomes evident that device shape stands as a significant determinant of user attitudes, perhaps even eclipsing the traditionally emphasized aesthetics.This poses a paradigm shift for managers and developers in the VR space.While the initial lure of a beautifully designed VR headset cannot be denied, longevity in user engagement appears to hinge more on ergonomic factors.A device that sits comfortably on the head, for instance, could translate to prolonged usage and a more immersive experience 133 .This underscores the necessity for managers to guide their development teams differently: the aim should not be solely about creating a visually attractive product, but one that, at its core, meets and exceeds user comfort and usability expectations.As VR technology continues to evolve, so must our approach to design and development, ensuring that user-centric considerations are always at the forefront.
Deep diving into the subtleties of how users perceive and relate to VR technologies, our study paints a detailed picture that holds invaluable lessons for marketing professionals.The salience of perceived enjoyment in shaping attitudes is particularly noteworthy.Rather than spotlighting solely the practical advantages of a VR device, marketers might find it more effective to underscore the sheer enjoyment and immersive experiences their product offers 134 .Imagining an advertisement campaign that vividly brings to life the exhilarating adventures, captivating landscapes, and thrilling narratives possible with a particular VR headset can be potent in influencing prospective buyers.Moreover, while functionality remains crucial, the joy of the experience can be a compelling sell.It's the difference between portraying a VR device as merely a tool and presenting it as a gateway to unparalleled adventures.Furthermore, the ergonomic benefits shouldn't be sidelined.By juxtaposing the immersive 'fun' experience with the comfort of prolonged use due to superior design, marketers can position their VR offerings as not just devices, but comprehensive experiences that cater to both the heart and the body.www.nature.com/scientificreports/For users navigating the ever-expanding VR marketplace, our research offers a compass to make more informed and satisfactory choices.Recognizing the influence of physical affordances on perceived usefulness and enjoyment empowers them to look beyond mere aesthetics or technical specifications.A device might be packed with the latest features, but if it doesn't fit comfortably or fails to provide intuitive user interactions, the overall VR experience may fall short of expectations.Moreover, while traditionally, practicality and utility have been paramount in tech purchases, our findings underscore the importance of the ' enjoyment' factor in the realm of VR.This insight is especially significant for users for whom VR isn't just a tool, but also a means of entertainment or relaxation.They should be seeking out devices or applications that promise not just functionality, but a rich, immersive, and enjoyable experience.It's about finding the right balance between work and play, practicality and pleasure, making their investment in VR truly rewarding.
Limitation and future research.While our research contributes to the field, it does come with some limitations.Firstly, the respondents surveyed were from a single country, thereby limiting the generalizability of our findings.Cultural or national factors may influence the use of VR devices, which future research could explore by conducting surveys in various countries, thus enhancing the universality of the research model.Secondly, we didn't adhere to best practices by omitting subscales and item codes in our questionnaire presentation.This oversight could impact data interpretability and challenges future replication efforts.In future research, we aim to meticulously follow these standards for clearer methodology.Thirdly, we acknowledge the difficulties associated with measuring constructs using only two items, which could potentially affect their reliability and validity.The task of identifying comprehensive measures for functional and cognitive affordance within the VR context was particularly challenging.Our item selection aimed to represent these constructs as accurately as possible, but the intricate and multidimensional nature of these constructs may not be entirely captured.We encourage future research to include a broader range of items to enhance the construct's validity and reliability.Lastly, while we verified discriminant validity through the Fornell & Larcker criterion, the HTMT analysis highlighted potential overlap among some constructs.Despite the stringent nature of the HTMT criterion, this issue underscores the need for refining constructs in future research to improve discriminant validity and minimize potential measurement overlap.

Table 1 .
Profile of the respondents.

Table 2 .
Test results of reliability and validity.