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A researcher develops a new 'Social Connectedness Index' and administers it alongside a well-known, established 'Belongingness Scale'. If the researcher finds a strong correlation of r=.75r = .75 between the two measures of the same construct, how should they apply this result to evaluate the validity of their new index?

Question: A researcher develops a new 'Social Connectedness Index' and administers it alongside a well-known, established 'Belongingness Scale'. If the researcher finds a strong correlation of r=.75r = .75 between the two measures of the same construct, how should they apply this result to evaluate the validity of their new index?

Sample answer: The researcher should apply the strong correlation of r=.75r = .75 to establish the convergent validity of their new 'Social Connectedness Index.' Since the new index correlates strongly with an existing, established measure of the same construct, it indicates that the new tool works in the same way and accurately captures the intended variable.

Key points:

  • Identify the correlation (r=.75r = .75) as evidence of convergent validity.
  • Note that the correlation is with an existing, established measure of the same construct.
  • Conclude that the new index works in the same way and accurately captures the intended variable.

Rubric: The student must state that the strong correlation of r=.75r = .75 with an established measure of the same construct provides evidence of convergent validity. They must apply this to show that the new index works in the same way and accurately captures the intended variable.

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Updated 2026-05-26

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Research Methods in Psychology - 4th American Edition @ KPU

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