ERIC Number: ED124541
Record Type: Non-Journal
Publication Date: 1975-Sep
Reference Count: N/A
Investigation of Methodological Problems in Educational Research: Longitudinal Methodology. Final Report.
Goulet, Larry R.; And Others
The problems and issues involved in the conduct of educational-developmental research are examined within the perspective of longitudinal research methodology. Chapters 2 and 3 examine contemporary research designs and procedures implemented for the selection of subjects and testing of behavior over time. Particular attention is given to the sequential research paradigms developed by Schaie for the purpose of simultaneous assessment of age-, cohort-, and time-related behavior change. Some of the common problems in measuring change and models for analyzing longitudinal data are considered in Chapters 4 through 7. Particular emphasis is given to interpretive problems resulting from the properties of scales widely used on standardized achievement tests, to the limitations of current techniques of vertical equating and consideration of alternative equating methods, and to the evaluation of the constancy of a construct over time. Chapter 8 presents an exposition of time-series analysis along with a new procedure for parameter estimation especially adapted to data from longitudinal studies. In Chapter 9 the problems of measurement of true change are reconsidered, and it is stated that lower and upper bounds for estimated true change are derived under more relaxed conditons than in classical test theory. The appendix reviews the report of the Anchor Test Study. (Author/MM)
Publication Type: Reports - Research
Education Level: N/A
Sponsor: National Inst. of Education (DHEW), Washington, DC.
Authoring Institution: Illinois Univ., Urbana.