Issues and strategies for reducing the length of self-report scales

JM Stanton, EF Sinar, WK Balzer, PC Smith

Research output: Contribution to journalArticle

Abstract

Greater understanding of the complex interrelationships among work-relevant constructs has increased the number of constructs on organizational surveys. Good psychometric practice also dictates the use of multiple items per construct. The net result has been longer surveys. Longer surveys take more time to complete, tend to have more missing data, and have higher refusal rates than short surveys. Arguably, then, techniques for reducing the length of scales while maintaining psychometric quality are worthwhile. Little guidance exists on how to reduce the length of a multi-item scale and we argue that the most common technique, maximizing internal consistency, is problematic and should be avoided. We present a set of item "quality indices" to help conceptualize the competing issues that influence item retention decisions. Statistical analysis of an example case using these indices suggested that there are 3 key aspects of item quality to consider when reducing a scale. We describe strategies that can assist scale developers in using these 3 aspects of item quality when making scale reduction decisions.

Original languageEnglish
Pages (from-to)167-194
Number of pages28
JournalPersonnel Psychology
Volume55
Issue number1
StatePublished - 2002

Keywords

  • CLINICAL-ASSESSMENT INSTRUMENTS
  • JOB DESCRIPTIVE INDEX
  • FACE VALIDITY
  • SHORT-FORM
  • COEFFICIENT ALPHA
  • QUESTIONNAIRE
  • RELIABILITY
  • REFINEMENT

Cite this

Stanton, JM., Sinar, EF., Balzer, WK., & Smith, PC. (2002). Issues and strategies for reducing the length of self-report scales. Personnel Psychology, 55(1), 167-194.