Loftus and palmer

Question 1

METHOD

Answer 1

• 2 experiments in lab
• independent groups = 1) 45 / 2) 150

Question 2

PROCEDURE

Answer 2

1) 7 diff clips, questionnaire + critical question = “how fast were the cars when they (hit/smashed/collided/bumped/contacted)”
2) film of car crashes then 3 groups asked Q’s (+ critical) “how fast were the cars when they (hit/smashed/no question)”
week later asked critical “did you see broken glass”

Question 3

FINDINGS

Answer 3

1) smashed estimated higher speed (average 40.8) compared to contacted lowest (average 31.8)
2) higher speeds in smashed, were x2 likely to report glass (16) than the hit group (7)

Question 4

CONC

Answer 4

• form of question can systematically affect witness answer
• memory is altered instead of response bias, as they recalled false details