Summative evaluations have often been undertaken to determine the impact of educational programs on student academic achievement employing a quasi-experimental design. The summative finding is expected to be less misleading if a statistical model is performed on a dataset including a sound matched sample as a control group. This is because an…

The starting point for this study was the resistant nature of prior knowledge in conceptual change from natural numbers to rational numbers observed in our previous study. Thus, in this study the effects of deliberately teaching the abstraction of the density of numbers on the number line was tested in a quasi-experimental study at the beginning…

This experimental, statistical study investigated the effects that Francis Christensen's "Generative Rhetoric of the Sentence" (1967) would have on overall writing quality and the number of subordinate clauses attached to the main independent clauses for more complex sentences in college freshmen's essays. In the experimental group of 42 students,…

Despite the phenomenal growth of executive coaching in recent years, there has been little empirical research on its effectiveness. Executive coaching is typically delivered with 360 degree feedback and training. This study tests whether there are significant differences in leadership behavior change for participants who: received feedback alone;…

NovaNET is an online computerized instructional system that provides students with self-paced instruction for many North Carolina high school courses. This evaluation looks at outcomes for students participating in the NovaNET program and compares them with outcomes for a group of students with similar characteristics who did not participate in…

This publication contains statistics of private high schools and academies reporting to the bureau for the school year ending June, 1926. Reports were received from 2,350 schools, an increase of 226 over the number reporting in 1924. This increase is due to a larger number of complete reports rather than to an increase in the number of…

Research methods are tools that can be variously applied - depending on the stage of knowledge in a particular area, the type of research question being asked, and the context of the research. The field of program evaluation, critical for social policy development, often has not adequately embraced the full range of methodological tools needed to…

Paper demonstrates that the standardized reading test scores of test-naive second-grade students can be significantly raised through instruction and practice in content-independent test-taking techniques. (Author)

In the present study, the authors collected data that would help resolve the controversey between developmental and defect theorists of mental retardation. (Authors/RY)

This investigation sought to compare male and female differences in play activities between 21 blind subjects and 21 matched control subjects in second through eighth grade. (Author)

A multi-session training approach attempted to teach mildly retarded adolescents to discover and utilize categorical list structure. Recall transfer with new word lists was demonstrated. Differences in use of categorization strategies by normal and retarded adolescents were interpreted in terms of the automatic controlled processing distinction.…

The biasing effects of a pretest on subsequent post-test results were investigated in two experimental studies. In general, the results argue for using designs without pretests. (Author/JKS)

Discusses an ethical dilemma that emerged in a study with bereaved college students. The instruments used to gather data clearly elicited grief-related distress, and more bereaved students in control groups left the study than did participants in social support groups. Three alternatives to a traditional control-group design are discussed for…