Experiential avoidance and psychological inflexibility have been recently found to be important constructs related to a wide range of psychological disorders and quality of life. The current study presents psychometric and factor structure data concerning the Spanish translation of a general measure of both constructs: the Acceptance and Action Questionnaire - II (AAQ-II). Six samples, with a total of 712 participants, from several independent studies were analyzed. Data were very similar to the ones obtained in the original AAQ-II version. The internal consistency across the different samples was good (between a= .75 and a= .93). The differences between clinical and nonclinical samples were statistically significant and the overall factor analysis yielded to a one-factor solution. The AAQ-II scores were significantly related to general psychopathology and quality of life measures. This Spanish translation of the AAQ-II emerges as a reliable and valid measure of experiential avoidance and psychological inflexibility.

The Cognitive Fusion Questionnaire (CFQ) is a recently published measure of cognitive fusion – a key construct in the model of psychopathology of acceptance and commitment therapy (ACT). This study presents the psychometric properties and factor structure data of a Spanish translation of the CFQ in Colombia. Three samples with a total of 1,763 participants were analyzed. The Spanish CFQ showed psychometric properties very similar to the ones obtained in the original version. Internal consistency across the different samples was good (Cronbach's alpha between .89 and .93). The one-factor model found in the original scale showed a good fit to the data. Measurement invariance was also found across sample and gender. The mean score of the clinical sample on the CFQ was significantly higher than the scores of the nonclinical samples. CFQ scores were significantly related to experiential avoidance, emotional symptoms, mindfulness, and life satisfaction. The CFQ was sensitive to the effects of a 1-session ACT intervention. This Spanish version of the CFQ shows good psychometric properties in Colombia

Experiential avoidance, the tendency to rigidly escape or avoid private psychological experiences, represents one of the most prominent transdiagnostic psychological processes with a known role in a wide variety of psychological disorders and practical contexts. Experiential avoidance is argued to be based on a fundamental verbal/cognitive process: an overextension of verbal problem solving into the world within. Although cultures apparently differ in their patterns of emotional expression, to the extent that experiential avoidance is based on a fundamental verbal/cognitive process, measures of this process should be comparable across countries, with similar relationships to health outcomes regardless of the language community. This research tests this view in European countries. The psychometric properties of the Acceptance and Action Questionnaire-II, a measure of experiential avoidance, are compared across six languages and seven European countries, for a total of 2,170 nonclinical participants. Multiple group analysis showed that the instrument can be considered invariant across the language samples. The questionnaire constitutes a unidimensional instrument with similar relationships to psychopathology, and has good and very similar psychometric properties in each assessed country. Experiential avoidance reveals not just as transdiagnostic, but also as a transcultural process independent of a specific language community.