Evidence from recent meta-analytic and narrative review suggests that early intensive behavioral intervention (EIBI) may improve life chances of preschool children with autism. Unfortunately, there are few data indicating whether early gains are maintained after intervention ceases. The purpose of the present study was to establish the 2-year…

From 1997 until his retirement in 2011, Michel Hersen served as the dean of the School of Professional Psychology (SPP) at Pacific University in Oregon. Through teaching, supervision, and modeling, Michel promoted his vision of a professional school that could compete on the national stage. He grew the program from a regional focus to one with a…

Using two modes of intervention delivery, the present study compared the effects of a cognitive defusion strategy with a thought distraction strategy on the emotional discomfort and believability of negative self-referential thoughts. One mode of intervention delivery consisted of a clinical rationale and training (i.e., Partial condition). The…

Despite their formal dissimilarity, problem behaviors (e.g., substance misuse, binge eating, self-harm) may share a common function. According to Acceptance and Commitment Therapy (ACT), this shared function is "Experiential Avoidance," the process of avoiding, escaping or otherwise altering unwanted private events (e.g., thoughts, feelings,…

Two classroom approaches to reducing racial and ethnic prejudice among college students were compared: a class session based on acceptance and commitment therapy (ACT) and an educational lecture drawn from a textbook on the psychology of racial differences. Undergraduates who were enrolled in two separate classes on racial differences were exposed…

This quasi-experimental field study assessed whether an incentive/reward intervention can change the drinking behavior and the subsequent levels of intoxication among college students attending fraternity parties. A total of 356 blood alcohol concentration (BAC) assessments, using hand-held breathalyzers, were obtained at two baseline and at two…

Individuals who exhibit motor and vocal tics are viewed as less socially acceptable than persons who do not exhibit tics. Efforts have been made to alter the negative perceptions through the use of education. However, the effectiveness of peer education and whether it need be Tourette syndrome (TS) specific remains unclear. One hundred and seventy…

This study explored some practical issues for single-case researchers who rely on visual analysis of graphed data, but who also may consider supplemental use of promising statistical analysis techniques. The study sought to answer three major questions: (a) What is a typical range of effect sizes from these analytic techniques for data from…