Studies using single-subject designs in sport psychology: 30 years of research.

A prominent feature of behavior-analytic research has been the use of single-subject designs. We examined sport psychology journals and behavioral journals published during the past 30 years, and located 40 studies using single-subject designs to assess interventions for enhancing the performance of athletes and coaches. In this paper, we summarize that body of research, discuss its strengths and limitations, and identify areas for future research.

Development and initial validation of a parent report measure of the behavioral development of infants at risk for autism spectrum disorders.

We developed and evaluated a new parent report instrument--Parent Observation of Early Markers Scale (POEMS)--to monitor the behavioral development of infants at risk for autism spectrum disorder (ASD) because they have older affected siblings. Parents of 108 at-risk infants (74 males, 34 females) completed the POEMS from child age 1-24 months. The POEMS had acceptable psychometric properties and promising predictive validity. Most concerning items were social and communication deficits, and intolerance to waiting. Results provide preliminary evidence that prospective parent report measures can help to detect early ASD symptoms in infants at biological risk. We invite researchers to join us in multi-center studies of the POEMS.