At a youth centre, a psychologist is checking whether a short screen-time survey gives dependable information. Eight volunteers complete the survey after an...
Question 1 Report
At a youth centre, a psychologist is checking whether a short screen-time survey gives dependable information. Eight volunteers complete the survey after an art session, then complete an identical version 18 days later. The researcher keeps the room, instructions and scoring model the same.
(a) Name the type of reliability being investigated. [1]
(b) Explain why using the same volunteers on both occasions helps the researcher assess this reliability. [2]
(c) Use the following information to outline one result that would suggest the survey has poor reliability: several volunteers receive very different scores on the second occasion. [1]
Answer Details
(a) Test-retest reliability [1] (b) The researcher can compare each person's first score with their later score [1]. Similar conditions mean that differences are less likely to be caused by changes to instructions, setting or scoring [1]. (c) The first and second scores would show little agreement / would differ greatly for the same volunteers [1].
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