Parent-Infant Relationship Global Assessment [1]
The PIR-GAS is a research-based rating instrument covering the full range of parent/infant relationships used for research purposes to describe the strengths of a relationship as well as to capture the severity of a disorder. A clinical interview with the parent coupled with observed behavior patterns allows the clinician to place the relationship into one of nine categories, ranging from well adapted (100-91) to grossly impaired (10 and under). Relationship difficulties are assessed based on the intensity, frequency, and duration of maladaptive interactions and a score below 40 marks a disordered relationship. Three aspects of the parent/infant relationship are evaluated in order to classify a disordered relationship: the behavioral quality of interactions, affective tone, and psychological involvement.
The PIR-GAS is influenced by developmental, psychodynamic, family systems, relationship, and attachment theories, as well as clinical case studies, observation in naturalistic settings, and assessments based on attachment theory.