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Questions and Answers
What was the primary instruction given to participants in the intentional condition before watching the video?
What was the primary instruction given to participants in the intentional condition before watching the video?
How many participants out of 80 reported noticing the change after viewing the video?
How many participants out of 80 reported noticing the change after viewing the video?
What significant effect was observed regarding gender differences in the intentional condition?
What significant effect was observed regarding gender differences in the intentional condition?
What was maintained until after all participants were tested?
What was maintained until after all participants were tested?
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What was the outcome of the hierarchical log linear analysis concerning change detection?
What was the outcome of the hierarchical log linear analysis concerning change detection?
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What percentage of participants did not notice the identity change of the burglar?
What percentage of participants did not notice the identity change of the burglar?
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Which condition led to a higher recall of details from the film?
Which condition led to a higher recall of details from the film?
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How many participants were there in total for the study?
How many participants were there in total for the study?
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What factor was significantly related to the awareness of change in identity?
What factor was significantly related to the awareness of change in identity?
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What was the height difference between the two actors portraying the burglars?
What was the height difference between the two actors portraying the burglars?
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Which of the following best describes the clothing worn by the burglars?
Which of the following best describes the clothing worn by the burglars?
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What demographic characteristics were balanced in the participant groups?
What demographic characteristics were balanced in the participant groups?
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What was the main task participants were generally instructed to do in the intentional condition?
What was the main task participants were generally instructed to do in the intentional condition?
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Study Notes
Study on Eyewitness Identification and Change Blindness
- Experiment: Investigated the impact of attentional focus (intentional vs. incidental) on eyewitness identification accuracy and change blindness in a simulated burglary.
- Participants: 80 community members (aged 15-65), balanced across gender and employment status (students, employed, domestic carers).
- Procedure: Participants watched a 2-minute video of a burglary with a change of perpetrator midway through. Half were instructed to remember the details (intentional condition); the other half viewed it incidentally (incidental condition).
- Stimulus: Two actors played burglars (one switching mid-video); actors differed in height/build/facial features; wore dark clothing.
- Measures:
- Questionnaire: Assessing recall of details and awareness of the identity change. Used an open-ended question about the burglar followed by 16 questions from Davies & Hine. Key questions included if participants noticed a change and descriptions of the offender.
- Lineup Identification: Participants selected the suspect(s) from a lineup they saw in the video.
- Main Findings:
- Change Blindness: 61% of participants didn't notice the identity change.
- Attentional Focus: Participants in the intentional condition showed significantly higher rates of change detection, better memory recall, and more accurate identification of both burglars.
- Gender Differences: A statistically significant interaction between gender and attention condition was identified. Women were more likely to detect the change in the intentional group, but there was no difference between men and women in the incidental group.
- Correlation: Awareness of the change significantly correlated with recall scores and accuracy of perpetrator identification.
Experimental Design and Analysis
- Randomization: Participants were randomly assigned to either the intentional or incidental condition, with an equal number of men and women in each.
- Data Analysis: A hierarchical log-linear analysis was conducted to examine the effect of condition and change detection on recall and identification accuracy, adding gender to the analysis.
- Significant Results: The change detection rate in the intentional condition was significantly higher (p<.001) than in the incidental condition. Also, there was a significant interaction between gender and condition influencing change detection (p<.05)
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Description
This quiz assesses understanding of a study on eyewitness identification and change blindness. It explores how attentional focus affects recall accuracy during a simulated burglary. Participants' responses contribute to insights on incidentally versus intentionally observed details.
