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[Graphical procedures for assessing person-fit in item factor analysis]
Pere Joan Ferrando Piera1, Fàbia Morales Vives
1Facultad de Psicología, Universidad Rovira i Virgili, Tarragona, Spain. perejoan.ferrando@urv.cat
Psicothema
|April 29, 2010
Summary
Identifying inconsistent responses in assessments is crucial for accurate scoring, particularly in clinical and personnel selection. This study introduces two graphic methods using linear factor analysis to pinpoint and understand response inconsistencies in personality measures.
Area of Science:
- Psychometrics
- Statistical analysis
- Personality assessment
Context:
- Inconsistent response patterns can lead to misinterpretations in psychological testing.
- Accurate assessment is vital in clinical settings and personnel selection.
- Existing methods may not fully elucidate the causes of response inconsistency.
Purpose:
- To propose novel graphic procedures for identifying inconsistent response patterns.
- To assess the causes of low intra-individual consistency.
- To pinpoint specific items contributing to response inconsistency.
Summary:
- Two graphical methods based on linear factor analysis are presented.
- These procedures help flag individuals with inconsistent answers.
- They enable the assessment of reasons for low consistency and identify problematic items.
Impact:
- Improves the accuracy of personality measures.
- Prevents erroneous interpretations of test scores in applied domains.
- Provides tools for refining test construction and item selection.
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