2.1 Example Data

For Chapter 2 we will make use of the longitudinal Wechsler Intelligence Scale for Children [WISC; Wechsler, -Wechsler (1949)] dataset described by Osborne and Suddick (1972). These data have been detailed extensively in a number of papers (McArdle and Epstein 1987; McArdle 1988; Mcardle and Aber 1990; McArdle and Nesselroade 1994) and are used here with with permission.

The WISC data contains repeated measures data from 204 children between the ages of 6 and 11 years old (during grades 6, 7, 9 and 11). Thee repeated measures include component scores for the verbal tests and performance subtests at all four occasions, along with verbal subtest scores for the information, comprehension, similarities, and vocabulary domains at the first and last measurement occasion. The demographics variables mother’s education (continuous in years) and mother graduated high school (dichotomous) are also included.

References

McArdle, J. J. 1988. “Dynamic but Structural Equation Modeling of Repeated Measures Data.” In Handbook of Multivariate Experimental Psychology, 2nd Ed, 561–614. Perspectives on Individual Differences. New York, NY, US: Plenum Press. https://doi.org/10.1007/978-1-4613-0893-5_17.

Mcardle, J. J., and MARK S. Aber. 1990. “Chapter 5 - Patterns of Change Within Latent Variable Structural Equation Models.” In Statistical Methods in Longitudinal Research, edited by Alexander von Eye, 1:151–224. Statistical Modeling and Decision Science. San Diego: Academic Press. https://doi.org/10.1016/B978-0-12-724960-5.50010-X.

McArdle, J. J., and David Epstein. 1987. “Latent Growth Curves Within Developmental Structural Equation Models.” Child Development 58 (1): 110–33. https://doi.org/10.2307/1130295.

McArdle, J. J., and John R. Nesselroade. 1994. “Using Multivariate Data to Structure Developmental Change.” In Life-Span Developmental Psychology: Methodological Contributions, 223–67. The West Virginia University Conferences on Life-Span Developmental Psychology. Hillsdale, NJ, US: Lawrence Erlbaum Associates, Inc.

Osborne, R. T., and D. E. Suddick. 1972. “A Longitudinal Investigation of the Intellectual Differentiation Hypothesis.” The Journal of Genetic Psychology: Research and Theory on Human Development 121 (1): 83–89. https://doi.org/10.1080/00221325.1972.10533131.

Wechsler, David. 1949. Wechsler Intelligence Scale for Children. Wechsler Intelligence Scale for Children. San Antonio, TX, US: Psychological Corporation.