Several competing dynamic models were applied to adolescent substance abuse using a cohort of 3,580 participants in a longitudinal study beginning in grade five. Evidence was found for an intrinsic self-regulating mechanism in adolescent smoking and drinking. Support for a dampened linear oscillator model is discussed. (SLD)

The hypothesis that fluid intelligence is equivalent to the factor of general intelligence is investigated using LISREL to specify higher-order models in reanalyses of three sets of psychometric data from subjects 11, 13, and 15 years old. The three studies showed fluid intelligence to be equivalent with a general factor. (LMO)

The components of Cattell's motivational model are discussed. The Motivation and School Motivation Analysis Tests are described. While Cattell's model gives a valid structure of dynamic influences and methods of quantifying certain aspects of these influences, more refinement is needed before it can be applied effectively by classroom teachers.…

Findings are reported for a cross-validated study of factorial validity and invariance of the Maslach Burnout Inventory across gender for elementary school teachers (742 males and 801 females) and secondary school teachers (659 males and 721 females). The study illustrates structural modeling methodology and use of multiple model-fitting criteria.…

Relations between aptitude variables and school achievement were investigated using a model of ability that permits simultaneous identification of general and specific abilities. Subjects were 866 Swedish students who were given aptitude tests in grade 6; results of that test were compared with course grades collected in grade 9. The usefulness of…