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Research methods and techniques

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Question 50

An occupational psychologist administered four different psychometric scales measuring executive cognitive function to a cohort of corporate executives on two separate occasions, three weeks apart, to assess test-retest reliability.

Table 1: Mean executive function scores from Session 1 and Session 2

ScaleMean from Session 1Mean from Session 2
Scale Alpha72.595.1
Scale Beta14.821.3
Scale Gamma110.3108.9
Scale Delta45.645.1

Using the data in Table 1, which scale has the highest level of external reliability?

Scale Alpha

Scale Beta

Scale Gamma

Scale Delta

Research methods and techniques Questions

  1. A Level
  2. /Psychology
  3. /Research methods and techniques