Base rate information is important in clinical assessment because one cannot know how unusual or typical a phenomenon is without first knowing its base rate in the population. This study empirically determined the base rates of social skills acquisition and performance deficits, social skills strengths, and problem behaviors using a nationally…

Attention-deficit/hyperactivity disorder (ADHD) and oppositional defiant disorder (ODD) frequently co-occur. Comorbidity of these 2 childhood disruptive behavior domains has not been satisfactorily explained at either a structural or etiological level. The current study evaluated a bifactor model, which allows for a "g" factor in addition to…

Nonverbal behaviors in young children, including facial expressions, gesture, and body movement, were studied. Decision-making behaviors were viewed on a less intentional-intentional continuum ranging from beginning or pre-decision behavior which suggested little or no intent to middle or exploratory behaviors indicative of more intent to end…