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Seeking a better balance between efficiency and interpretability: Comparing the likert response format with the
Mark Wilson1, Shruti Bathia1, Linda Morell1
1Graduate School of Education, University of California, Berkeley.
Psychological Methods
|January 13, 2022
Summary
The Guttman response format offers better internal structure validity evidence than the Likert format for survey items. This alternative approach enhances outcome interpretability and can complement Likert scales.
Area of Science:
- Social Sciences
- Psychometrics
- Survey Methodology
Background:
- The Likert item response format is widely used in social sciences due to its simplicity in item generation and response coding.
- However, the Likert format presents challenges in interpreting internal structure validity evidence.
- This necessitates exploring alternative response formats for improved data interpretation.
Purpose of the Study:
- To critique the Likert item response format concerning internal structure validity evidence.
- To propose the Guttman response format as a superior alternative for gathering and interpreting internal structure validity evidence.
- To illustrate the development and operation of Guttman format items using a survey example.
Main Methods:
- A comparative analysis of Likert and Guttman response formats was conducted.
- Survey-based examples were used to demonstrate the development and application of Guttman format items.
- The study explored comparisons between results obtained from both response formats.
Main Results:
- The Guttman response format provides a more robust approach to gathering and interpreting internal structure validity evidence.
- Items in the Guttman format demonstrated clear operational differences compared to Likert items.
- The study highlighted potential improvements in outcome interpretability using the Guttman format.
Conclusions:
- The Guttman response format is recommended for enhancing the interpretability of survey outcomes.
- Integrating the Guttman format can improve the validity evidence derived from survey research.
- The Guttman format can be used alongside Likert items to balance efficiency and interpretability.
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