Questions: A social psychologist investigates the impact of collaborative eyewitnessing on accuracy. They have 60 participants watch a video of a car crash. 20 of the participants recall the details of the video by themselves, while 40 of the participants are paired up with another person when recalling what happened in the video. The psychologist records the answers and later codes them to assess their accuracy.

In this study, the social psychologist is examining the impact of collaborative eyewitnessing on the accuracy of recall. Let's break down the components of the experiment:

The experimental condition involves the participants who are paired up with another person to recall the details of the video. This group consists of 40 participants.

The control condition consists of the participants who recall the details of the video by themselves. This group includes 20 participants.

The independent variable in this study is the method of recall, which has two levels: recalling alone and recalling in pairs (collaborative eyewitnessing).

The dependent variable is the accuracy of the recalled details, which is assessed by coding the participants' answers after they recall the video.

This setup allows the psychologist to compare the accuracy of recall between individuals who work alone and those who collaborate, thereby assessing the impact of collaborative eyewitnessing.