Cited by 6,567Psychometric Methodologies and TestingHealth Education and ValidationPsychological Testing and Assessment

Constructing validity: Basic issues in objective scale development.

Clark, Lee Anna, Watson, David·1995·Psychological Assessment

Abstract

A primary goal of scale development is to create a valid measure of an underlying construct. We discuss theoretical principles, practical issues, and pragmatic decisions to help developers maximize the construct validity of scales and subscales. First, it is essential to begin with a clear conceptualization of the target construct. Moreover, the content of the initial item pool should be overinclusive and item wording needs careful attention. Next, the item pool should be tested, along with variables that assess closely related constructs, on a heterogeneous sample representing the entire range of the target population. Finally, in selecting scale items, the goal is unidimensionality rather than internal consistency ; this means that virtually all interitem correlations should be moderate in magnitude. Factor analysis can play a crucial role in ensuring the unidimensionality and discriminant validity of scales.

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Crossref · 10.1037/1040-3590.7.3.309

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Authors
Clark, L. A., & Watson, D.
Affiliations
  • University of Iowa (US)
  • University of Notre Dame (US)
Venue
Psychological Assessment
Published
1995-09
Volume
7
Issue
3
Pages
309-319
ISSN
  • 1040-3590 (ISSN-L)
  • 1939-134X
OpenAlex
W2005364767
Cited by
6,567
References
44
Citations by year
2026: 393 · 2025: 319 · 2024: 313 · 2023: 343 · 2022: 337 · 2021: 455 · 2020: 420 · 2019: 404 · 2018: 432 · 2017: 359 · 2016: 357 · 2015: 352 · 2014: 353 · 2013: 269 · 2012: 248
FWCI
18.16
Type
journal article
Language
en
Open access
closed
Locations
Psychological Assessment (publishedVersion)
Topics
  • Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
  • Social Sciences › Education › Health Education and Validation
  • Social Sciences › Psychology › Applied Psychology › Psychological Testing and Assessment
Keywords
construct validity, scale development, item pool, item wording, unidimensionality, internal consistency, factor analysis, discriminant validity, subscales, construct conceptualization

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