The purpose of this study was to evaluate the psychometric properties of a Perceived Benefits Scale, a Perceived Barriers Scale, and a Physical Activity Enjoyment Scale with data from a group randomized controlled trial (RCT) and a test-retest study with 1-week interval. In the group RCT at baseline and Week 17, 1,012 fifth- to eighth-grade girls…

The purpose of this study was to operationalize the constructs of the Theory of Planned Behavior (TPB) to predict the sleep intentions and behaviors of undergraduate college students attending a Midwestern University. Data collection spanned three phases. The first phase included a semi-structured qualitative interview (n = 11), readability by…

Poor language skills can have a negative effect on a developing child if not identified early. Current strategies to identify families with children who may need additional support are limited, and may not detect child language problems before they become entrenched. The present study explores observed indices of parental language as a means of…

A longitudinal design was used to test the hypotheses that career development indices account for significant amounts of variance in the prediction of high school success, and account for unique variance beyond that of academic predictors of high school success. The participants included 188 11th-grade students who were followed-up in the 12th…

This study evaluates the validity of two aggression scales for predicting observations of malicious or disruptive behavior at school. Subgroups of a sample of 1,560 children (age 8.6 plus or minus 1.5 years) were assessed using (a) peer nominations of aggression, (b) teacher reports on the Teacher Report Form (TRF) of the Child Behavior Checklist…