Department of PsychologyUniversity of Hawaii at Manoa

Department of Psychology Faculty Profile

Akihiko Masuda

Akihiko Masuda

Assistant Professor


PhD, University of Nevada, Reno (2006); MA, University of the Pacific (2000); BA, West Virginia University (1997).


Following the framework of contextual behavioral science, my research and writings encompass a broad range of topics, including philosophy of science, principle-based psychotherapies, Zen Buddhism, diversity, cultural humility, mental health related stigma, spectrum of disordered eating, and acceptance and commitment therapy (ACT).

Clinically, I have exceptional training in mindfulness-based cognitive behavioral interventions, especially ACT. My clinical experiences are broad with diverse clinical populations in a wide range of clinical settings, including university counseling center, inpatient and outpatient hospital, and residential home. Recently, I have been actively involved in therapist training, supervision, and treatment consultation. I am a peer-reviewed ACT therapist trainer recognized by the Association of Contextual Behavioral Science (ACBS).

Representative Publications (* indicates student co-author):

Masuda, A. & O’Donohue W. (Eds.) (in press). Handbook of Zen, Mindfulness, and Behavioral Health. New York: Springer Publication.

Masuda, A. (Ed.) (2014). Mindfulness and Acceptance in Multicultural Competency: A Contextual Approach to Sociocultural Diversity in Theory and Practice. Oakland, CA: New Harbinger Publication.

Masuda, A., Tully, E. C., Drake, C. E., Tarantino, N., Ames, A., & Larson, D. G. (2017). Examining self-concealment within the framework of psychological Inflexibility and mindfulness: A preliminary cross-sectional investigation. Current Psychology: A Journal for Diverse Perspectives on Diverse Psychological Issues, 36 (1), 184-191.

Masuda, A. (2016). Principle-based cultural adaptation of cognitive behavioral therapies: A functional and contextual perspective. Japanese Journal of Behavior Therapy, 42 (1), 11-19.

Masuda, A., Ng*, S. Y., Moore*, M., Felix*, I., & Drake, C. E. (2016). Acceptance and Commitment Therapy as a treatment for a Latina young adult woman with purging: A case report. Practice Innovations, 1 (1), 20-35.

Hill*, M. L., Masuda, A., Melcher*, H., Morgan*, J., & Twohig, M. P. (2015). Acceptance and commitment therapy for women diagnosed with binge eating disorder: A case-series study. Cognitive and Behavioral Practice, 22, 367-378.

Mandavia*, A., Masuda, A., Moore*, M., Mendoza*, H., Donati*, M. R., & Cohen, L. L. (2015). The application of cognitive defusion technique to negative body image thoughts: A preliminary analogue investigation. Journal of Contextual Behavioral Science, 4, 86-95.

Leleux-Labarge, K, Hatton, A., Goodnight*, B. L., & Masuda, A. (2015). Psychological distress in sexual minorities: Examining the roles of self-concealment and psychological inflexibility. Journal of Gay & Lesbian Mental Health, 19, 40-54.

Masuda, A., Mandavia*, A., & Tully, E. C. (2014). The role of psychological inflexibility and mindfulness in somatization, depression, and anxiety among Asian Americans in the United States. Asian American Journal of Psychology, 5(3), 230-236.

Masuda, A., Muto, T., Tully, E. C., Morgan*, J., & Hill*, M. L. (2014). Comparing Japanese college students’ and U.S. college students’ disordered eating, distress, and psychological inflexibility. Journal of Cross-Cultural Psychology, 45, 1161-1172.

Masuda, A., & Hill*, M. L. (2013). Mindfulness as therapy for disordered eating: A systematic review. Neuropsychiatry, 3(4), 433-447.

Hill*, M. L., Masuda, A., & Latzman, R. D. (2013). Body image flexibility as a protective factor against disordered eating behavior for women with lower body mass index. Eating Behaviors, 14, 336-341.

Latzman, R. D., & Masuda, A. (2013). Examining mindfulness and psychological inflexibility within the framework of Big Five Personality. Personality and Individual Differences 55,129-134.

Masuda, A., Hill*, M. L., Morgan*, J., & Cohen, L. L. (2012). A psychological flexibility-based intervention for modulating the impact of stigma and prejudice: A descriptive review of empirical evidence. Psychology, Society & Education, 4(2), 211-223.

Stotts, A. L., Green, C., Masuda, A., Grabowski, J., Wilson, K., Northrup, T., Moeller, F. G., & Schmitz, J. (2012). A stage I pilot study of Acceptance and Commitment Therapy for methadone detoxification. Drug and Alcohol Dependence, 125, 215-222.

Masuda, A., Hill*, M. L., & Tone, E. B. (2012). The role of mindfulness and disordered eating cognitions in psychological distress among college females with elevated disordered eating. Mindfulness, 3(2).132-138.

Masuda, A., Price, M., & Latzman, R. D. (2012). Mindfulness moderates the relationship between disordered eating cognitions and disordered eating behaviors in a non-clinical college sample. Journal of Psychopathology and Behavioral Assessment, 34, 107-115.

Masuda, A., & Tully, E. C. (2012). The role of mindfulness and psychological flexibility in somatization, depression, anxiety, and general psychological distress of a non-clinical college sample. Journal of Evidence-Based Complementary & Alternative Medicine, 17, 66-71.

Hayes, S. C., Muto, T., & Masuda, A. (2011). Seeking cultural competence from the ground up. Clinical Psychology: Science and Practice, 18, 232-237.

Masuda, A., & Latzman, R. D. (2011). Examining the associations among factor-analytically derived components of mental health stigma, distress, and psychological flexibility. Personality and Individual Differences, 51, 435-438.

Masuda, A., Cohen, L. L., Wicksell, R. K., Kemani, M, & Johnson, A (2011). A case study: Acceptance and commitment therapy for pediatric sickle cell disease. Journal of Pediatric Psychology, 36, 398-408.

Masuda, A., Anderson, P. L, *Wendell, J. W., *Price, M., *Feinstein, A. B., & *Chou, Y. (2011).   Psychological flexibility mediates the relation between self-concealment and negative psychological outcomes.  Personality and Individual Differences, 50, 243-247.

Masuda, A., *Feinstein, A. B., *Wendell, J. W., & *Sheehan, S. T. (2010). Cognitive defusion versus thought distraction: A clinical rationale, training, and experiential exercise in altering psychological impact of negative self-referential thoughts. Behavior Modification, 34, 520-538.

Masuda, A., Twohig, M. P., *Stormo, A. R., *Feinstein, A. B., *Chou, Y., & *Wendell, J. W. (2010). The effects of cognitive defusion and thought distraction on emotional discomfort and believability of negative self-referential thoughts. Journal of Behavior Therapy and Experimental Psychiatry, 41, 11-17.

Masuda, A., Anderson, P. L., & *Sheehan, S. (2009). Mindfulness and mental health among African American college students. Complementary Health Practice Review, 14, 115-127.

Masuda, A., *Price, M., Anderson, P. L.,*Schmertz, S. K., & *Calamaras, M. R. (2009). The role of psychological flexibility in mental health stigma and psychological distress for the stigmatizer. Journal of Social and Clinical Psychology, 28, 1244-1262.

Lillis, J., Hayes, S. C., Bunting, K., & Masuda, A. (2009). Teaching acceptance and mindfulness to improve the lives of obese:  A preliminary test of a theoretical model. Annals of Behavioral Medicine, 37, 58-69.

Masuda, A., Hayes, S. C., Twohig, M. P., Drossel C., Lillis, J., & Washio, Y. (2009). A parametric study of cognitive defusion and the believability and discomfort of negative self-relevant thoughts, Behavior Modification, 33, 250-262.

Masuda, A., Hayes, S. C., Fletcher, L. B., Seignourel, P. J., Bunting, K., Herbst, S. A., Twohig, M. P., & Lillis, J. (2007). The impact of Acceptance and Commitment Therapy versus education on stigma toward people with psychological disorders. Behaviour Research and Therapy, 44, 2764-2772.

Hayes, S. C., Luoma, J. B., Bond, F. W., Masuda, A., & Lillis, J. (2006). Acceptance and Commitment Therapy: Model, processes and outcomes. Behaviour Research and Therapy, 44, 1-25.

Masuda, A., Hayes, S. C., Sackett, C. F., & Twohig, M. P. (2004). Cognitive defusion and self-relevant negative thoughts: Examining the impact of a ninety year old technique. Behaviour Research and Therapy, 42, 477-485.

Hayes, S. C., Masuda, A., Bissett, R., Luoma, J., & Guerrero, L. F. (2004). DBT, FAP, and ACT: How empirically oriented are the new behavior therapy technologies? Behavior Therapy, 35, 35-54.

Hayes, S. C., Niccolls, R., Masuda, A., & Rye, A. (2002). Prejudice, terrorism, and behavior therapy. Cognitive and Behavioral Practice, 9, 296-301.

College of Social SciencesUniversity of Hawaii at Manoa