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Cannabis Induced Impairment of Performance of a Divided Attention Task


AN important factor in driving skill is the information processing ability of the driver. The human operator can process less information within a certain time if it must be received from more than one source1. Driving is such a situation and can be described as a divided attention task in which the driver is forced to perform a compensatory tracking task while searching for and recognizing environmental signals2. Our subjects were required to monitor and respond to two types of visual signals from different sources. We compared the effect of cannabis on the performance of subjects with and without previous experience of cannabis.

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CASSWELL, S., MARKS, D. Cannabis Induced Impairment of Performance of a Divided Attention Task. Nature 241, 60–61 (1973).

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