The Applied Mindfulness Process Scale (AMPS): A process measure for evaluating mindfulness-based interventions

• Qualitative inquiry yielded a mindfulness process measure comprised of 15 items.
• Exploratory factor analysis and theory yielded three factors for the scale.
• Correlations with related psychometric scales confirmed nomological validity.
• Confirmatory factor analysis verified good model fit with three-factors.

ObjectiveMindfulness-based interventions (MBIs) include the application of meditation and mind–body practices used to promote mindful awareness in daily life. Operationalizing the construct of mindfulness is important in order to determine mechanisms of therapeutic change elicited by mindfulness practice. In addition to existing state and trait measures of mindfulness, process measures are needed to assess the ways in which individuals apply mindfulness in the context of their practice.MethodThis report details three independent studies (qualitative interview, N = 8; scale validation, N = 134; and replication study, N = 180) and the mixed qualitative–quantitative methodology used to develop and validate the Applied Mindfulness Process Scale (AMPS), a 15-item process measure designed to quantify how mindfulness practitioners actively use mindfulness to remediate psychological suffering in their daily lives.ResultsIn Study 1, cognitive interviewing yielded a readily comprehensible and accessible scale of 15 items. In Study 2, exploratory factor analysis derived a potential three-factor solution: decentering, positive emotion regulation, and negative emotion regulation. In Study 3, confirmatory factor analysis verified better model fit with the three-factor structure over the one-factor structure.ConclusionsAMPS functions as a measure to quantify the application of mindfulness and processes of change in the context of MBIs and general mindfulness practice.