Biomedical subjects

Akihiko Masuda

Publications and source records attributed to Akihiko Masuda.

5 recordsLinked to original sources

PubMed2006

Increasing willingness to experience obsessions: acceptance and commitment therapy as a treatment for obsessive-compulsive disorder.

This study evaluated the effectiveness of an 8-session Acceptance and Commitment Therapy for OCD intervention in a nonconcurrent multiple-baseline, across-participants design. Results on self-reported compulsions showed that the intervention produced clinically significant reductions in compulsions by the end of treatment for all participants, with results maintained at 3-month follow-up. Self-monitoring was supported with similar decreases in scores on standardized measures of OCD. Positive changes in anxiety and depression were found for all participants as well as expected process changes in the form of decreased experiential avoidance, believability of obsessions, and need to respond to obsessions. All participants found the treatment to be highly acceptable. Implications and future directions are discussed.

Adult↗

PubMed2006

Acceptance and commitment therapy: model, processes and outcomes.

The present article presents and reviews the model of psychopathology and treatment underlying Acceptance and Commitment Therapy (ACT). ACT is unusual in that it is linked to a comprehensive active basic research program on the nature of human language and cognition (Relational Frame Theory), echoing back to an earlier era of behavior therapy in which clinical treatments were consciously based on basic behavioral principles. The evidence from correlational, component, process of change, and outcome comparisons relevant to the model are broadly supportive, but the literature is not mature and many questions have not yet been examined. What evidence is available suggests that ACT works through different processes than active treatment comparisons, including traditional Cognitive-Behavior Therapy (CBT). There are not enough well-controlled studies to conclude that ACT is generally more effective than other active treatments across the range of problems examined, but so far the data are promising.

Cognitive Behavioral Therapy↗

PubMed2005

A preliminary investigation of acceptance and commitment therapy as a treatment for chronic skin picking.

The effectiveness of a deliberately limited version of Acceptance and Commitment Therapy (ACT) for chronic skin picking was evaluated in a pair of multiple baseline across participants designs. Self-monitoring of skin picking showed that four of the five participants reached near zero levels of picking by post-treatment, but these gains were not fully maintained for three of the four participants at follow-up. The findings of the self-reported skin picking were generally corroborated by ratings of photographs of the damaged areas and by ratings on a validated measure of skin picking severity. All participants rated the intervention as socially acceptable, and reductions were found on measures of anxiety, depression, and experiential avoidance for most participants as a result of the intervention. Results support the construction of more comprehensive ACT protocols for skin picking.

Adult↗

PubMed2004

Cognitive defusion and self-relevant negative thoughts: examining the impact of a ninety year old technique.

Cognitive defusion techniques are designed to reduce the functions of thoughts by altering the context in which they occur, rather than the attempting to alter the form, frequency, or situational sensitivity of the thoughts themselves. Applied technologies designed to produce cognitive defusion seem to lead to reductions in the believability of negative thoughts, but defusion techniques are generally only parts of complex packages and the role of defusion techniques per se is note yet known. The present study examined the impact of a cognitive defusion technique first described by Titchener nearly 90 years ago: rapidly repeating a single word. In series of eight single-case alternating treatment designs, this defusion technique was compared to a distraction task, and to a thought control task on reductions in the discomfort and believability of self-relevant negative thoughts. The cognitive defusion technique reduced both discomfort and believability more so than the comparison approaches. Control studies showed that the effect was probably not due to demand characteristics.

Adolescent↗

PubMed2002

Peer-mediated reinforcement plus prompting as treatment for off-task behavior in children with attention deficit hyperactivity disorder.

Functional analyses revealed that peer attention was one variable maintaining the off-task behavior exhibited by 3 students with a diagnosis of attention deficit hyperactivity disorder (ADHD). Peer-mediated reinforcement plus prompting was then used to reduce off-task behavior in a simulated classroom environment. Implications for future applications of this procedure with children diagnosed with ADHD are discussed.

Attention↗