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Analysis of Covariance	2
Computer Programs	2
Evaluation Methods	2
Mathematical Models	2
Primary Education	2
Program Effectiveness	2
Research Methodology	2
Research Reviews…	2
Statistical Analysis	2
Statistical Significance	2

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Evaluation Quarterly

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Bentler, Peter M.	1
Magidson, Jay	1
Woodward, J. Arthur	1

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A Head Start Reevaluation: Positive Effects Are Not Yet Demonstrable

Bentler, Peter M.; Woodward, J. Arthur – Evaluation Quarterly, 1978

The Head Start data analyzed by Magidson (1977) were reanalyzed using Joreskog's (1976) LISREL computer program methodology. The hypothesis that the Head Start program produced zero effects on the cognitive abilities of its participants was evaluated by several Chi Square tests. In all cases, the null hypothesis could not be rejected. (Author/CTM)

Descriptors: Analysis of Covariance, Computer Programs, Evaluation Methods, Mathematical Models

Reply to Bentler and Woodward: The .05 Significance Level Is Not All-Powerful

Magidson, Jay – Evaluation Quarterly, 1978

In a reply to the previous article (TM 503 435), Magidson disparages the arbitrary application of the .05 significance level to these data, responds to several assertions, and provides additional data in support of his original article showing positive effects for Project Head Start. (CTM)

Descriptors: Analysis of Covariance, Computer Programs, Evaluation Methods, Mathematical Models