We explore the conditions under which short, comparative interrupted time-series (CITS) designs represent valid alternatives to randomized experiments in educational evaluations. To do so, we conduct three within-study comparisons, each of which uses a unique data set to test the validity of the CITS design by comparing its causal estimates to…

Few studies have explored the subjective mental health of adolescents with intellectual disabilities, while proxy ratings indicate an overrepresentation of mental health problems. The present study reports on the design and an initial empirical evaluation of the Well-being in Special Education Questionnaire (WellSEQ). Questions, response scales,…

This paper describes the development, utility, and validity of the Situational Self-statement and Affective State Inventory (SSASI), a research inventory designed to assess cognitions and affects across a variety of five hypothetical situations. Each situation describes a realistic incident involving interpersonal conflict, principally criticism…

Although actual or projected satisfaction with parenting is important in determining whether a couple will become parents and how large their family will be, only minimal research has assessed parental satisfaction. The Cleminshaw-Guidubaldi Parent Satisfaction Scale, a 50-item Likert-type instrument designed to measure components of satisfaction…

Two types of sensitivity indices were developed in this paper, one internal to the total test and the second external. To evaluate the success of these statistics the three criteria suggested for a satisfactory index of item quality were considered. The Internal Sensitivity Index appears to meet these demands. Certainly it is easily computed. In…