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Memory

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Question 87

In the second experiment of the Loftus and Palmer (1974) study on eyewitness testimony, participants returned one week after watching a film of a car crash and were asked: "Did you see any broken glass?"

What level of measurement is this dependent variable, and which statistical test would be appropriate to analyse the difference in responses across the three independent participant groups?

Ordinal data and the Mann-Whitney $U$ test

Nominal data and the Wilcoxon signed-ranks test

Nominal data and the Chi-Square ( $χ2\chi^2$ ) test

Interval data and the Unrelated $t$ -test

Markscheme

Memory Questions

A Level
Psychology
Memory

163 exam-style questions on OCR A Level Psychology Memory, covering Loftus and Palmer (1974): Eyewitness testimony and Grant et al. (1998): Context-dependent memory. Each one has a worked solution and a mark scheme showing where the marks go.

Memory

Question bank

Memory

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Question 87

What level of measurement is this dependent variable, and which statistical test would be appropriate to analyse the difference in responses across the three independent participant groups?

Ordinal data and the Mann-Whitney $U$ test

Nominal data and the Wilcoxon signed-ranks test

Nominal data and the Chi-Square ( $χ2\chi^2$ ) test

Interval data and the Unrelated $t$ -test

Markscheme

Memory Questions

A Level
Psychology
Memory