This paper presents the development and validation of the Possessions as Others and Self Inventory (POSI). The POSI is a 23-item self-report measure that assesses the extent to which possessions… Click to show full abstract
This paper presents the development and validation of the Possessions as Others and Self Inventory (POSI). The POSI is a 23-item self-report measure that assesses the extent to which possessions are perceived to be extensions of self and significant others in hoarding disorder. In Study 1 ( N = 246 community participants, M age = 33.70), exploratory factor analysis suggested the retention of a six-factor solution consistent with the notion that links between possessions, self, and others have numerous dimensions. Confirmatory factor analysis in Study 2 ( N = 307 community participants, M age = 35.13) supported the consistency of the six-factor structure. Convergent validity was buttressed by strong correlations between POSI subscales and hoarding symptomology and beliefs. Following disposal of possessions, a perceived feeling of emptiness within the self appears to be particularly pertinent to hoarding behavior.
               
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