Researchers across many fields have called for greater attention to heterogeneity of treatment effects--shifting focus from the average effect to variation in effects between different treatments, studies, or subgroups. True heterogeneity is important, but many reports of heterogeneity have proved to be false, non-replicable, or exaggerated. In…

Item response tree (IRTree) models are a flexible framework to control self-reported trait measurements for response styles. To this end, IRTree models decompose the responses to rating items into sub-decisions, which are assumed to be made on the basis of either the trait being measured or a response style, whereby the effects of such person…

Transactional distance (TD), the perception of psychological distance between the student and his peers, his instructor/teacher, and the learning content, has long been a prominent construct in research on distance education. Today, distance education primarily takes place over the internet, with technology mediating engagement and communication.…

The purpose of this study was to investigate the four sources of self-efficacy in music performance and examine responses from the Music Performance Self-Efficacy Scale (MPSES). Participants (N = 290) were middle and high school music students from 10 schools in two regions of the United States. Questions included the following: (1) How much…

This article attempts to present a novel application of a method of measuring accuracy for academic success predictors that could be used as a standard. This procedure is known as the receiver operating characteristic (ROC) curve, which comes from statistical decision techniques. The statistical prediction techniques provide predictor models and…

If one accepts the premise that the criterion measure (Musical Aptitude Profile) is a valid predictor of future musical success, then the Measures of Musical Abilities, based on these data, can be considered to possess a moderately high validity for the same purpose. (Author/CB)

Predictive validities of computer aptitude and computer anxiety were studied using nonprogramming computer performance as the criterion variable for 162 young adults. Effects of computer anxiety on performance were negligible, and computer aptitude yielded uncertain results. The measurement instruments' reliability was also reported. (SLD)

Multiple regression equations predicting first semester grade point average (GPA) from high school percentile rank (HSPR) and Composite score on the American College Test (ACT:C) were examined for five successive fall freshman classes (1965-1969) at the University of Illinois. Slopes were significantly different among the five equations. Further…

Eighty three applicants for empployment in a hardware supply manufacturing company participated in a study of the effects of anxiety, praise and the awareness of time remaining on employment testing. Two control groups and three testing groups--praise, time, and praise and time--were administered the General Aptitude Test Battery (GATB), a…

Addresses the validity of the Cognitive-Affective Response Test-Music by clarifying the theoretical assertions on which the construct validity of the instrument rests. Presents nine specific assertions and data from two studies. Concludes that the test is valid for college-bound high school students. (CFR)

The Beginning Teacher Evaluation Study (BTES), Phase II, was a research project on effective teaching behavior--what teachers do that significantly affects what and how pupils learn. The purposes of Phase II were to (1) develop an assessment system for measuring teacher and pupil behaviors and other factors which could influence each of them and…

The Language Aptitude Symposium papers include: "Prognostication and Language Aptitude Testing, 1925-62" (Bernard Spolsky); "You, the Government, and Language Aptitude" (Government Roundtable; abstract only); "Styles of Thinking and Learning" (Robert Sternberg); "Current Research in Measuring Listening"…