Related Experiment Video
Updated: Aug 13, 2026

Continuous Theta Burst Stimulation of the Posterior Medial Frontal Cortex to Experimentally Reduce Ideological Threat Responses
Published on: September 28, 2018
An evaluation of the MMPI-2 and MMPI-a true response inconsistency (TRIN) scales
Richard W Handel1, Randolph C Arnau, Robert P Archer
1Eastern Virginia Medical School, Department of Psychiatry and Behavioral Sciences, Norfolk, VA 23507, USA. handelrw@evms.edu
Abstract:
The Minnesota Multiphasic Personality Inventory-Adolescent (MMPI-A) and Minnesota Multiphasic Personality Inventory-2 (MMPI-2) True Response Inconsistency (TRIN) scales are measures of acquiescence and non-acquiescence included among the standard validity scales on these instruments. The goals of this study were to evaluate the effectiveness of these scales in detecting varying degrees of acquiescence and non-acquiescence and to evaluate cutoff scores for clinical use. After the removal of invalid protocols from the MMPI-2 and MMPI-A normative samples, each normative sample was randomly divided in half. For each measure, one half of the normative sample served as a comparison group and the other half was modified with increasing degrees (10%, 20%, 30%, 40%, and 50%) of randomly inserted true or false responses. The results for a 9.1% base rate of acquiescence or non-acquiescence provide support for TRIN cutoff scores at or near those presented in the MMPI-A and MMPI-2 manuals.
Related Concept Videos
Self-Report Tests of Personality
Multiple Comparison Tests
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
Reliability and Validity
McNemar's Test
Self-Discrepancy Theory
Triarchic Theory of Intelligence