A Brief Inventory of Interpersonal Problems–Circumplex Using Nonparametric Item Response Theory: Introducing the IIP–C–IRT

Abstract

Nonparametric item response theory methods were applied to the responses of 1,000 college students on the 64 items of the Inventory of Interpersonal Problems-Circumplex (IIP-C; Alden, Wiggins, & Pincus, 1990) to develop an abbreviated 32-item version of the instrument. In a separate validation sample of 981 students, the newly selected scale items did not show evidence of differential item functioning across males and females. There was high convergence found between the new scales and IIP-C parent scales, along with commensurate or improved fits to the circular structural model relative to the full scale and its existing brief derivatives-the IIP-32 and the IIP-SC. Results provide evidence that the new brief scales can improve the level of precision and information yielded in brief assessments of interpersonal problems without gender bias.

Interpersonal Change Following Intensive Inpatient Treatment

“…Elevations in scales characterizing the Submissive profile (Nonassertive, Overly Accommodating, Self-Sacrificing) previously have been noted in anxious and depressive samples (Kachin, Newman, & Pincus, 2001; Ley et al, 2011). Finally, sex differences across Submissive and Hostile/Withdrawn profiles are consistent with research positing an interpersonal “gender axis”, with difficulties among men characterized by High Dominance/Low Affiliation and difficulties among women characterized by High Affiliation/Low Dominance (Hyde, 2005; Sodano & Tracey, 2011). …”

“…Scales index eight intercorrelated traits - Domineering/Controlling, Vindictive/Self-Centered, Cold/Distant, Social Inhibited, Nonassertive, Overly Accommodating, Self-Sacrificing, and Intrusive/Needy – structured around a circumplex model of interpersonal behavior (see Sodano & Tracey, 2011 for a review). Although scores evidence sensitivity to psychosocial intervention (e.g., Dinger et al, 2007; Haase et al, 2008; Renner et al, 2012; Watzke et al, 2012), analysis of mean-level response across individual scales fails to consider the possible impact of more complex patterns of dysfunction.…”

Not Just Right Experiences in Obsessive-Compulsive and Related Disorders

“…Interpersonal problems. Interpersonal problems were measured using the Inventory of Interpersonal Problems-Circumplex-Item Response Theory (IIP-C-IRT; Barkham et al, 1996;Sodano & Tracey, 2011). The IIP-C-IRT is a 32-item version of the 64-item IIP.…”

Examination of Polytomous Items’ Psychometric Properties According to Nonparametric Item Response Theory Models in Different Test Conditions

“…High item scores are related to high levels of measured ability. ICCs, which are monotone increasing functions, are evaluated as an indicator of how well items at changing levels of latent trait discriminate individuals (Sodano & Tracey, 2011). Sample OCCs are illustrated in Figure 1, and a sample ICC is illustrated in Figure 2 below (Khan et al, 2014, p. 55).…”

“…In PIRT models, ICCs are based on a logistic or normal ogive curve, while in NIRT models, ICCs do not have a predetermined parametric form (Lee, Wollack, & Douglas, 2009;Sodano & Tracey, 2011). The need for large samples to estimate correctly in PIRT models is referred to as a limitation (Sijtsma & Molenaar, 2002).…”