Collection of Evidence

Question 1

Bruce’s Aim

Answer 1

To see if theres a difference in our ability to recognise faces based on internal or external features of the facial composite with celebrities

Question 2

Bruce’s Sample

Answer 2

He used to a self selected sample to gather 30 staff and students form Stirling University.

Question 3

Bruce’s Procedure

Answer 3

3 conditions where they were given 10 pictures of celebrities and tasked to sort through 40 composite images choosing 4 per face. Conditions varied on whether they had just internal/ external or both.

Question 4

Bruce’s Results

Answer 4

No significant difference between the accuracy of those with entire face composites or just external features, 35% correct. Internal features only match 19.5% of the time.

Question 5

Bruce’s Suggestions

Answer 5

When witnesses are recalling internal features its best not to fully trust the accuracy. Also general statistics are low.

Question 6

Bruce’s Pros

Answer 6

• Less demand characteristics or order effects
• Less researcher bias
• High control
• Quantitative data
• Useful applications

Question 7

Bruce’s Cons

Answer 7

• Not representative sample
• Low ecological validity due to lack of consequence
• Individual differences
• Celeb faces makes task easier