Metacognitive self-assessment scale: psychometric properties and clinical implications.

Metacognition is a higher-order psychological construct that has been conceptualized as the ability to identify and describe mental states, beliefs, and intentions of self and others. The Metacognition Self-Assessment Scale (MSAS), was developed to assess different functions of metacognition, being a potential asset in fields such as psychotherapy and clinical neuropsychology. However, a reliability and validity study is still lacking, as well, the study with other related metacognitive constructs. This research describes the psychometric analysis of the MSAS in a cross-sectional design and the study of the relationship between metacognitive functions, meta-beliefs and cognitive fusion. The sample comprised 194 participants from the general population (76% women), with an average age of 32 years old. Exploratory factor analysis, Cronbach alpha, test-retest, and validity procedures through bivariate correlations with convergent/divergent measures were conducted. The scale showed satisfactory psychometric properties with good internal consistency along with appropriate convergent/divergent validity. Metacognition and cognitive fusion were negatively correlated, while negative meta-beliefs and mastery predicted the variance of cognitive fusion. Decentering-differentiation factor correlated negatively with cognitive fusion and personal discomfort. These results suggest that MSAS may be a reliable tool to assess metacognition in the Portuguese population. Clinical implications are discussed.