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EWT

40418 Inglés 12 fichas

Fichas del conjunto (12)

1Johnson & Scott - SummaryPen and knife study, investigating weapons effect on accuracy of recall.
2Johnson & Scott - ProcedureParticipants sat in a waiting room, heard arguing from the other room. Man emerged carrying an object.
Condition A: Pen
Condition B: Knife
3Johnson & Scott - Findings49% in the pen condition identified the man correctly.
33% in the knife condition identified the man correctly.
4Johnson & Scott - ConclusionWeapon focus theory: Witnesses attention narrows to focus on the weapon as it is the source of anxiety.
5Johnson & Scott - StrengthIndependent groups design was used, therefore there was no demand characteristics.
6Johnson & Scott - WeaknessLab experiment causes low ecological validity.
Debatably unethical: anxiety and stress caused, deception.
7Yuille &Cutshall - SummaryGun shop shooting
8Yuille & Cutshall - ProcedureReal life shooting in a gun shop. 21 witnesses, 13 agreed to take part.
Interviews held 4-5 months after the event.
Compared with original statements.
Asked to rate anxiety on a 7 point scale.
9Yuille & Cutshall - FindingsParticipants who reported higher levels of stress were 88% accurate.
Those who reported lower levels of stress were 75% accurate.
10Yuille & Cutshall - ConclusionAnxiety improves recall of stressful events
11Yuille & Cutshall - StrengthField study - High ecological validity
12Yuille & Cutshall - WeaknessNo control of extraneous variables, could have effected the results. Therefore has low internal and ecological validity.