ERIC Number: EJ272077
Record Type: CIJE
Publication Date: 1982
Reference Count: 0
The Fan-Spread Hypothesis and the Adjustment for Initial Differences Between Groups in Uncontrolled Studies.
Preece, Peter F. W.
Educational and Psychological Measurement, v42 n3 p759-62 Fall 1982
The validity of various reliability-corrected procedures for adjusting for initial differences between groups in uncontrolled studies is established for subjects exhibiting linear fan-spread growth. The results are then extended to a nonlinear model of growth. (Author)
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Authoring Institution: N/A