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Ysseldyke, James E.; Salvia, John – Diagnostique, 1980
The paper cites difficulties in aptitude-treatment interaction (ATI) research which investigates relationships between test performance and the extent of profiting from instruction. Two methods for ATI research (regression analysis and analysis of variance) are described, assumptions and potential mininterpretations are noted, and correct…
Descriptors: Analysis of Variance, Aptitude, Aptitude Treatment Interaction, Disabilities
Miles, Matthew B.; And Others – 1978
The third of a five-volume series, this volume consists of two empirical studies of organization development (OD) in school systems. Part 1 reports on information gathered from over 300 OD consultants in the United States and Canada regarding job title, work base, sex, geographical region, type of training, and nature and extent of OD work in…
Descriptors: Consultants, Elementary Secondary Education, Foreign Countries, Multiple Regression Analysis
