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Psychometric properties of the Inventory of Interpersonal Problems (IIP-C) used with a clinical sample of adolescents: a preliminary study

Scandinavian Journal of Child and Adolescent Psychiatry and Psychology
Volume 9 (2021): Issue 1 (January 2021)
By:
Open Access
|Apr 2021

Figures & Tables

FIGURE 1A.

The hypothesized bi-factor model of the IIP-C used with adolescents
The hypothesized bi-factor model of the IIP-C used with adolescents

FIGURE 1B.

Standardized coefficients of the bi-factor CFA solution with Distress PA = Domineering; BC = Vindictive; DE = Cold; FG = Socially Avoidant; HI = Nonassertive; JK = Exploitable; LM = Overly Nurturant; NO = Intrusive.
Standardized coefficients of the bi-factor CFA solution with Distress PA = Domineering; BC = Vindictive; DE = Cold; FG = Socially Avoidant; HI = Nonassertive; JK = Exploitable; LM = Overly Nurturant; NO = Intrusive.

FIGURE 2.

The Circumplex structure of the IIP-C used with adolescents PA = Domineering; BC = Vindictive; DE = Cold; FG = Socially Avoidant; HI = Nonassertive; JK = Exploitable; LM = Overly Nurturant; NO = Intrusive.
The Circumplex structure of the IIP-C used with adolescents PA = Domineering; BC = Vindictive; DE = Cold; FG = Socially Avoidant; HI = Nonassertive; JK = Exploitable; LM = Overly Nurturant; NO = Intrusive.

Correlation between IIP-C scales and YSR broadband scales and Social Problems

PA = DomineeringBC = VindictiveDE = ColdFG = Socially avoidantHI = NonassertiveJK = ExploitableLM = Overly nurturantNO = Intrusive
Internalizing Problems 0.287 0.368 0.48 0.539 0.52 0.464 0.623 0.144
Externalizing Problems 0.517 0.675 0.327 0.150.0530.072 0.295 0.338
Social Problems 0.306 0.283 0.362 0.36 0.2380.0970.20.002
Internalizing Problems-0.205--0.1050.0930.2070.1720.0410.163 -0.272
Externalizing Problems0.209 0.455 0.102-0.195 -0.324 -0.267 -0.0410.097
Social Problems0.0460.0360.1890.2230.052-0.143-0.084-0.23

Cronbach’s alpha, inter-item correlations and item-total correlations

Mean (SD)Inter-item correlation averageItem-total correlation rangeCronbach’s alpha
PA7.46 (4.86)0.240.09 – 0.530.69
BC8.7 (5.64)0.260.15 – 0.650.74
DE7.98 (5.84)0.300.24 – 0.700.78
FG11.79 (6.97)0.360.28 – 0.710.82
HI12.3 (7.65)0.400.49 – 0.720.84
JK10.87 (6.83)0.350.31 – 0.670.81
LM10.65 (5.49)0.250.23 – 0.430.72
NO8.93 ( 5.86)0.240.24 – 0.550.71
Total78.79 (34.02)0.300.16 – 0.650.93

Intercorrelations of IIP-C: above diagonal are raw scores and below are ipsative scores

PABCDEFGHIJKLMNO
PA1.661**.494**.312*0.124-0.0720.2070.22
BC.459**1.693**.412**.319*-0.0230.2280.184
DE-0.031.346**1.768**.691**.295*.394**0.152
FG-.293*-0.218.330**1.771**.498**.522**0.137
HI-.622**-.464**0.157.346**1.713**.622**0.084
JK-.503**-.714**-.524**-0.088.373**1.729**.280*
LM-0.117-.356**-.647**-.376**-0.146.340**1.470**
NO0.1560.04-.421**-.581**-.616**-0.057.277*1
DOI: https://doi.org/10.21307/sjcapp-2021-010 | Journal eISSN: 2245-8875
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Language: English
Page range: 87 - 95
Published on: Apr 27, 2021
Published by: Psychiatric Research Unit
In partnership with: Paradigm Publishing Services
Publication frequency: 1 times per year
Keywords:
Inventory of Interpersonal Problems IIP-C,
adolescent psychiatry,
psychometric properties,
interpersonal problems
Related subjects:
Medicine,
Basic medical science,
Basic medical science, other

© 2021 Pravin Israel, Johannes Hendrik Langeveld, published by Psychiatric Research Unit
This work is licensed under the Creative Commons Attribution 4.0 License.

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