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Identifying and Addressing Sources of Measurement Error in the Norbeck Social Support Questionnaire.

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Area of Science:

  • Psychological Measurement
  • Social Psychology

Background:

  • The Norbeck Social Support Questionnaire (NSSQ) is widely used to assess perceived social support.
  • Previous analyses indicate potential measurement error within the NSSQ.

Purpose of the Study:

  • To document evidence of measurement error in the NSSQ.
  • To identify potential sources contributing to this measurement error.
  • To present findings from psychometric testing of the NSSQ.

Main Methods:

  • Quantitative literature review to form initial hypotheses on error sources.
  • Cognitive interviews to investigate hypotheses regarding network nomination and support ratings.

Main Results:

  • Cognitive interviews revealed that respondents sometimes miscomprehend questions.
  • Evidence of response option bias was identified in participant responses.

Conclusions:

  • The NSSQ's current nomination process and response options may reduce subscore accuracy.
  • Lack of a "not applicable" option and embedded examples contribute to NSSQ inaccuracies.