Eyewitness memory, Personality and Arousal
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Eyewitness memory, Personality and Arousal

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    Eyewitness memory, Personality and Arousal Eyewitness memory, Personality and Arousal Presentation Transcript

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    • Materials Hindi adaptation of Eysenck Personality Inventory (Thakur & Thakur, 1986) based on Eysenck Personality Inventory (Eysenck & Eysenck, 1964) to classify the subjects into personality types of extravert and introvert
    • Procedure Phase-1. Exposure to the witnessed event Phase-2. Introduction of post-event information Phase-3. Memory test
    • Personality Type Types of Post-Event Information Consistent Misleading No Overall Mean SD Mean SD Mean SD Mean SD Extravert 15.60 1.58 9.50 1.43 11.40 1.50 12.17 2.97 Introvert 17.20 1.1.48 5.40 1.20 8.50 1.43 10.37 5.25 Overall 16.40 1.70 7.45 2.50 9.95 2.10 11.27 4.33
    • Source of Variation SS df MSS F p Level of Significance A (Types of Post-Event Information) 853.03 2 426.52 206.01 .0001 B (Types of Personality) 48.60 1 48.60 23.47 .0001 A  B 90.30 2 45.15 21.81 .0001 Within Treatments (Error) 111.80 54 2.07 Total 1103.73 59
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    • Materials Hindi adaptation of UWIST Mood State Adjective Checklist (UMS; Mathews, Dwivedi, A.P. Singh, Srivastava, Arora and I.L. Singh, 1995) A video clip of 3 minutes and 15 seconds duration as the eyewitness event depicting a riot, as used in Experiment-1 A memory test consisting 20 items regarding details of the event Two types of post-event information (The consistent post-event information correctly described the event and items given in the test. Misleading post-event information employed some misleading cues about the event
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    • Arousal States Types of Post-Event Information Consistent Misleading No Overall Mean SD Mean SD Mean SD Mean SD Energetic Arousal 17.00 1.15 11.90 1.29 13.10 1.00 14.00 2.48 Tense Arousal 14.90 1.20 4.50 1.27 7.50 1.18 9.00 4.60 Hedonic Tone 16.90 1.10 9.80 1.48 11.20 1.32 12.63 3.67 Anger / Frustration 14.10 1.20 5.70 1.16 9.10 1.60 9.63 3.74 Overall 15.73 1.70 8.00 3.28 10.23 2.48 11.31 4.14
    • Source of Variation SS df MSS F p Level of Significance A (Types of Post-Event Information) 1271.67 2 653.83 404.65 .0001 B (Arousal States) 518.69 3 172.90 110.03 .0001 A  B 83.53 6 13.92 8.86 .0001 Within Treatments (Error) 169.70 108 1.57 Total 2043.59 119
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    • Misleading post-event information led the witnesses to poor eyewitness memory retention Extraverts were more accurate eyewitnesses than were the introverts Introverts performed better than the extraverts with consistent post-event information, while extraverts performed better when given misleading and no post-event information High energetic arousal and hedonic tone subjects retained more event details than the high tense arousal and anger/frustration subjects High tense arousal and anger/frustration subjects’ memory score dropped sharply when they were given misleading post event information in comparison to the high energetic arousal and hedonic tone subjects
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