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Development and Initial Validation of the Schedule for Nonadaptive and Adaptive Personality Brief Other-Description Rating Form (SNAP-BORF)

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Abstract

The full-length Schedule for Nonadaptive and Adaptive Personality - 2nd Edition (SNAP-2, Clark et al. 2014) and various derivative versions were developed as measures of normal- and pathological-range personality traits. We report herein on the development and initial validation of the SNAP Brief Other-Description Rating Form (SNAP-BORF), an abbreviated version of the SNAP Other-Description Rating Form (ORF; Harlan and Clark Assessment, 6, 131–145, 1999). Our goal was to create a more efficient SNAP informant short form by making items more succinct rather than by eliminating items. SNAP-ORF word count was reduced by 68%, and the 1.5-page SNAP-BORF can be completed in approximately 10 min, one-third to one-half the time required to complete the SNAP-ORF. Mean-level differences between the SNAP-ORF and SNAP-BORF scales were negligible for all scales except propriety. Using exploratory factor analysis, we found the SNAP-BORF had a three-factor structure (NA vs. Low PA, Disinhibition vs. Constraint, and Antagonism) broadly consistent with extant literature. The SNAP-BORF showed good convergent/ discriminant validity with respect to the SNAP-family measures as well as measures of normal personality and symptoms of depression, anxiety, and worry. Results indicated that the SNAP-BORF is a useful measure when a very brief informant assessment of adaptive and maladaptive personality is needed.

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Notes

  1. The difference between the SNAP and SNAP-2 is only in the diagnostic and validity scales. The temperament and personality trait scales of the instruments are identical. Because the SNAP-ORF assesses only the temperament and personality traits, we do not distinguish between the two “parent” measures, except where necessary, and hereafter refer to the full measure simply as the SNAP.

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Lee Anna Clark is the author and copyright owner of the Schedule for Nonadaptive and Adaptive Personality-2nd Edition (SNAP-2) and all derivative measures. Fees for commercial and funded, non-commercial usage licenses support student research; unfunded, non-commercial research and clinical usage licenses are free of charge. Yuliya Kotelnikova and Elizabeth P. Hayden declare that they have no conflict of interest.

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Kotelnikova, Y., Clark, L.A. & Hayden, E.P. Development and Initial Validation of the Schedule for Nonadaptive and Adaptive Personality Brief Other-Description Rating Form (SNAP-BORF). J Psychopathol Behav Assess 41, 470–484 (2019). https://doi.org/10.1007/s10862-019-09729-y

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