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Volume 6 Issue 7, July 2022

Understanding self-injury

Nonsuicidal self-injury is a risk factor for future suicide attempts, and it is estimated that 17% of adolescents worldwide engage in nonsuicidal self-injury. Kuehn et al. carried out an individual-participant meta-analysis of longitudinal studies and found support for the hypothesis that self-injurious thoughts and behaviours function to provide relief from distressing negative affect.

See Kuehn et al.

Cover image: Luciano Lozano / Moment / Getty. Cover design: Bethany Vukomanovic.


  • For years, researchers have interrogated scientists’ own research practices. A computational research stream, often termed ‘science of science’, studies the signatures these practices leave in big data. As the field matures, it is looking for ways to use its data-driven insights to make a tangible mark in science policy.



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Comment & Opinion

  • Although large-scale data are increasingly used to study human behaviour, researchers now recognize their limits for producing sound social science. Qualitative research can prevent some of these problems. Such methods can help to understand data quality, inform design and analysis decisions and guide interpretation of results.

    • Nikolitsa Grigoropoulou
    • Mario L. Small
  • Central bank digital currencies (CBDCs) already exist in several countries, with many more on the way. But although CBDCs can promote financial inclusivity by offering convenience and low transaction costs, their adoption must not lead to the loss of privacy and erosion of civil liberties.

    • Andrea Baronchelli
    • Hanna Halaburda
    • Alexander Teytelboym
  • Failure to consider the principles of equity, diversity and inclusion in biomedical and human behaviour research harms patients, trainees and scientists. On the basis of experience and evidence, we make actionable, specific recommendations on how equity, diversity and inclusion can be considered at each step of a research project.

    • Shannon M. Ruzycki
    • Sofia B. Ahmed
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Research Briefings

  • A randomized controlled trial of approximately 4,500 households in Botswana during the COVID-19 pandemic was conducted to investigate the effectiveness of using low-tech learning interventions during school closures. A simple combination of phone tutoring and SMS messages substantially improved learning in primary school children in a cost-effective manner.

    Research Briefing
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Amendments & Corrections

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