Educational researchers and policymakers need to understand the ecological correlation fallacy, since so much bad research (and policy) has been based on it. Aggregate data may or may not yield results that are true for individuals. Only individual-level data can correctly answer questions about the relationship between variables for individuals.…

When students are taught with approaches matching their preferences as identified in Rita Dunn's "Learning Style Inventory," they demonstrate statistically higher achievement and attitude test scores than when taught with approaches mismatching their preferences. Learning styles must be identified with a reliable instrument, because…

Some of the problems in research on aptitude treatment interactions (ATIs), are discussed. Among these problems are the inconsistency and lack of generality to many ATI findings, especially in classroom-based ATI investigations. It is suggested that such investigations may be of limited generality due to the nature of the phenomena. The importance…

The serious problems faced in the ESAA (Emergency School Aid Act) data collection effort (magnitude of the data to be collected, many kinds of respondents, and sensitivity of much of the data) are discussed. Procedures for overcoming obstacles are described. These include limiting collection to essential data, tailoring instruments to respondents,…

A review of literature relevant to equal educational opportunity is presented in order to support an argument for the use of normative models in educational research. The literature review shows that confusion over the 1966 Coleman Report was due to a mismatch between the implied reform objective of the report and its statistical approach. The…

Over 150 papers and articles were examined, and interviews with noted computer-based instruction (CBI) professionals were conducted to obtain information about CBI and the research evidence. Focus was on four main areas of CBI research--costs, learning achievements, individual differences, and student attitudes. Consistent empirical evidence did…