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Assessing Implicit Theories in Sexual Offending Using Indirect Measures: Feasibility, Reliability, and Incremental
Mirthe G C Noteborn1, Jelle J Sijtsema1,2, Jaap J A Denissen3
1Tilburg University, The Netherlands.
Indirect measures for Implicit Theories (ITs) of sexual offending, including the IAT, IRAP, and RRT, showed poor psychometric qualities. These methods are currently not recommended for clinical assessment of ITs.
Area of Science:
- Psychology
- Forensic Psychology
- Psychometrics
Background:
- Implicit Theories (ITs) of sexual offending are complex and difficult to measure.
- Existing indirect measures like the IAT, IRAP, and RRT have not been rigorously evaluated for their psychometric properties in this context.
Purpose of the Study:
- To assess the psychometric qualities of indirect measures for Implicit Theories (ITs) of sexual offending.
- To compare the feasibility, reliability, and validity of the IAT, IRAP, and RRT.
- To determine if indirect measures offer incremental predictive validity over self-report measures.
Main Methods:
- A sample of 109 males from the general population participated.
- Psychometric qualities including feasibility, internal consistency, convergent/discriminant validity, and predictive validity were assessed for the IAT, IRAP, and RRT.
- Aggressive behavior was also assessed for comparison.
Main Results:
- No indirect measure met all psychometric criteria for assessing ITs.
- The IAT showed feasibility for aggression but not ITs. The RRT had some feasibility and reliability for ITs.
- The IRAP demonstrated limited feasibility, low reliability, and high complexity.
Conclusions:
- Current indirect measures (IAT, IRAP, RRT) have significant limitations in assessing Implicit Theories of sexual offending.
- These measures lack sufficient psychometric support for reliable and valid use in clinical practice.
- Further research is needed to develop and validate robust indirect measures for ITs.
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