The Motivation Assessment Scale is an aid for hypothesis-driven functional analysis. This study presents its Spanish cross-cultural validation while examining psychometric attributes not yet explored. The study sample comprised 80 primary caregivers of children with autism. Acceptability, scaling assumptions, internal consistency, factor structure, inter-assessor reliability and agreement, and known-group validity analyses were performed. Scaling assumptions, internal consistency (Cronbach alpha of 0.75) and factor structure were satisfactory other than for the Escape domain which demonstrated low internal consistency (0.65), inadequate scaling assumptions (multitrait analysis, 50% success rate) and did not constitute a separate factor. Caregivers' agreement for the primary function reached 73.9% and known group-validity hypotheses across behavior topographies were partially met. The clinical appropriateness of the scale is discussed.

An investigation was conducted to analyze the relationship between perceived parenting styles, presented intensity psychopathology and externalizing-internalizing dimensions in a clinical sample of adolescents aged 13 to 18. The results found indicate that the psychopathological intensity is associated with age, with older age and over intensity; and with female gender. Only two dimensions of perceived parenting style were found related to psychopathological intensity: psychological control negatively and humor positively. As opposed to other studies consulted, the psychological control dimension appeared linked to externalizing symptoms and not with internalizing.