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13 - Structural equation models for studying intellectual development

Published online by Cambridge University Press:  27 April 2010

David Magnusson
Affiliation:
Stockholms Universitet
Lars R. Bergman
Affiliation:
Stockholms Universitet
Georg Rudinger
Affiliation:
Rheinische Friedrich-Wilhelms-Universität Bonn
Bertil Torestad
Affiliation:
Stockholms Universitet
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Summary

INTRODUCTION

In this chapter we investigate in turn the following issues.

  1. We test systematically hypotheses concerning the conceptual differentiation of reliability of intelligence measures and stability of intelligence constructs as a feature of the developmental process itself.

  2. We test hypotheses about longitudinal changes in structure of the intelligence constructs over time indicated by sets of observables. This is of general interest in intelligence longitudinal research, particulary concerning the differentiation/reintegration hypothesis of intelligence.

We study both problems with intelligence data from the Bonn Longitudinal Study of Aging (BOLSA).

The Bonn Longitudinal Study of Aging (BOLSA) was started in 1965 with a sample of 222 women and men born in 1890-5/1900-5. The younger cohort (1900-5) consisted of 114 persons and the older one (1890-5) of 108. Of the 114 younger subjects, 55 were women and 59 men and in the older cohort there were 49 women and 59 men. Each measurement period took five days; during this period three semistructured interviews were administered, each of which focused on different sections of our subjects' lives. Furthermore, subjects underwent a series of intelligence tests (WAIS/HAWIE, Raven test), psychomotoric, and personality tests, and were examined by a specialist for internal medicine.

Type
Chapter
Information
Problems and Methods in Longitudinal Research
Stability and Change
, pp. 274 - 307
Publisher: Cambridge University Press
Print publication year: 1991

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