Khuri's and Satterthwaite's methods of obtaining confidence intervals of variance components are compared. The article discusses that Khuri's method may be applied to obtain confidence intervals for the variance components and other linear functions of the expected mean squares used in generalizability theory. (Author/JAZ)

This study was designed to determine whether differences in performance on a popular instructional gaming package would be observed under differing conditions of color presentation. It was hypothesized that performance would be enhanced under a monochromatic and/or moderately colored condition, and least successful under a multicolored condition.…

Discussion of the use of color in microcomputer-based educational software focuses on a study of Israeli ninth graders that examined the differential effects of three color treatments on the learning of geometric concepts by students with differential aptitudes. Hypotheses tested are described and results are analyzed. (28 references) (Author/LRW)

Describes a study of fifth-grade students in Taiwan that explored the differential effects of intergroup competition on intragroup cooperation and interpersonal relationships within groups in a computer-assisted instruction (CAI) environment. Statistically significant differences were found between the two treatment conditions (with and without…

Discussion of text segmenting and comprehension highlights a study of elementary students in Australia that tested two hypotheses, one concerning reading abilities and one concerning information processing skills involved in syntactic analysis. Tests that measured vocabulary, comprehension, and processing skills are described, results are…

Describes study of fifth and sixth grade Jewish Israeli students that tested the hypothesis that intrinsic motivation will be differentially affected by task-involving and ego-involving evaluation. Three feedback conditions involving grades and individual comments are explained, and results are discussed in terms of student interest and…

This study investigated the potential usefulness of a cognitive education intervention approach to improving learning abilities of underachieving Native adolescents. The specific variables considered were: (1) the manner in which this approach may affect cognitive development; (2) academic learning; (3) attitudes towards and interest in academic…

This study investigated relationships among locus of control, instructional mode, and achievement for externally and internally oriented students taught by the same instructor using two different teaching methods. A definite relationship was found among the variables, and internally oriented students attained higher achievement levels where…

Describes research with Dutch secondary school students that studied the effects of the presentation of more general (superordinate) concepts on the attainment of basic concepts, and the effects of two different forms of example presentation on concept learning. Computer based instruction and interactive video used in the study are described. (18…

Describes a study of Korean elementary school students that was conducted to investigate the effects of differing types of instructional control strategies and cognitive style on achievement in arithmetic skills using computer-assisted instruction. Hypotheses tested are discussed, time on task is investigated, and future research is suggested.…

Based on Fiedler's Contingency Model of Leadership Effectiveness and Leader-Match program, this study's hypothesis is that experienced school principals increase their effectiveness by changing key organizational variables to suit their personal leadership styles. Following V. D. McNamara's application of Fiedler's contingency model in a study of…

Discussion of correspondence instruction and the role of the tutor focuses on a study at the University of Manitoba that investigated the relationship between correspondence students' attitudes toward the importance of telephone contact with their course tutors and the effects of providing such contact. (29 references) (LRW)

Describes a study conducted at the University of Groningen (Netherlands) that investigated the effectiveness of a computer-based training program for use with an automated system for retrieving legal information. Hypotheses tested are explained, computer-based versus traditional instructional methods are compared, and implications for further…

Describes study of 435 Israeli elementary school students to assess effects of open education on reading comprehension assignments. Literature on open education is reviewed, the hypotheses tested are described, results are analyzed comparing the effects of open education with the effects of traditional classroom instruction, and 46 references are…

Describes two experiments in Dutch secondary schools that were carried out to study the effect of the sequencing of the information in computer-assisted instructional programs. Instructional design for concept learning is discussed; successive and coordinate relationships between concepts are explained; and tests designed for procedural and…