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The aim of this article is to present validation data about a self-report rating scale for the assessment of interpersonal guilt according to Control-Mastery Theory (CMT; Silbershatz, 2005; Weiss, 1993; Weiss, Sampson, & The Mount Zion Psychotherapy Research Group, 1986), the Interpersonal Guilt Rating Scale-15s (IGRS-15s).
In order to perform the validation of this tool in an Italian sample we have collected a sample of 645 nonclinical subjects. They had to complete the IGRS-15s, the Scale for the Measurement of the Impending Punishment (SMIP; Caprara et al., 1990), the Interpersonal Guilt Questionnaire-67 (IGQ-67; O'Connor et al., 1997), the Psychological General Well-Being Index (PGWBI; Dupuy, 1984), and the Affective Neuroscience Personality Scales (ANPS; Davis, Panksepp, & Normansell, 2003), together with an ad-hoc questionnaire for collecting demographic data, the Socio-Demographical Schedule.
We have performed a confirmatory factor analysis to verify if the four-factor solution based on CMT and replicated in previous research (Gazzillo et al., 2017) was confirmed. Then, we checked the retest reliability of IGRS-15s after four weeks in a random subsample of 54 subjects. In order to assess its concurrent and discriminant validity, we calculated the correlations between IGRS-15s
Francesco Gazzillo, Ph.D., Researcher, Department of Dynamic and Clinical Psychology, “Sapienza” University of Rome, Italy.
Bernard Gorman, PhD., Professor Emeritus, Derner Institute of Advanced Psychological Studies, Adelphi University, Garden City, New York.
Emma De Luca, PhD., Department of Dynamic and Clinical Psychology, “Sapienza” University of Rome, Italy.
Filippo Faccini, PhD., Department of Dynamic and Clinical Psychology, “Sapienza” University of Rome, Italy.
Marshall Bush, Ph.D., San Francisco Psychotherapy Research Group, San Francisco, CA. George Silberschatz, Ph.D., Clinical Professor, University of California, San Francisco. Nino Dazzi, Ph.D., Professor Emeritus, “Sapienza” University of Rome, Italy.
assessment and SMIP and IGQ-67. Finally, to test its construct validity, we assessed the relationships between the IGRS-15s and the affective systems using the ANPS and the wellbeing assessed with the PGWBI.
The data collected support the retest reliability and the concurrent and discriminant validity of the measure, and we have collected preliminary data about its construct validity. Examples of the possible clinical and research applications of this tool are discussed.