Assessing psychological inflexibility: the psychometric properties of the Avoidance and Fusion Questionnaire for Youth in two adult samples
Psychological Assessment (2012) - Comment
pubmed: 21988185  doi: 10.1037/a0025776  issn: 1939-134x  issn: 1040-3590 

Thomas A. Fergus, David P. Valentiner, Michael J. Gillen, Regina Hiraoka, Michael P. Twohig, Jonathan S. Abramowitz, Patrick B. McGrath