A Level Psychology OCR Practice Exam

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In the first experiment of Casey et al (2011), which of the following was measured as a dependent variable?

Participants' age
Reaction time and accuracy
Brain activity
Duration of the experiment

The correct answer is: Reaction time and accuracy

In Casey et al. (2011), the dependent variable measured was reaction time and accuracy. This study focused on how participants responded to a go/no-go task, which is designed to assess impulse control and attentional processes. By measuring both reaction times and accuracy, the researchers could determine how well participants were able to control their impulses when presented with stimuli that required quick responses. This approach allowed the researchers to draw conclusions about the differences in self-control between the high and low delayers identified in earlier studies. The focus on reaction time and accuracy is crucial to understanding the cognitive processes involved in self-regulation and how individuals differ in their responses to temptations.