Aim: To examine the ability of pps to identify faces from videos security devices
Method: pps watched 10 video clips twice of members of uni deot coming in and out of a building
- They then were shown pictures of people faces they had to say whether they had seen them or not using a scale:Independant Variable
- Some pps knew the members of staff
- Some pps didnt know the staff
- Some were police officers
Results: The pps who knew the people on video were good at identifying the from the pictures. 2 other groups found it difficult to identify the people they saw or did not see on the video clips
Conclusion: Familarity with the target on the video clip had a large effect on identification
Evaluation: +Study wa well controlled, Burton can be confident that the familiarity affected the ratings given for each picture
- Less pps could make it difficult to generalise. Could be pps variable in each group affecting the ratings rather han familairty
- Rating system is subjective, rating of 5 from 1 pps may not be the same rating of 5 from another
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