The ups and downs of intelligence: The co-occurrence model and its associated research program
Peer reviewed, Journal article
Published version
Permanent lenke
https://hdl.handle.net/11250/3042441Utgivelsesdato
2022Metadata
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Originalversjon
Egeland, J. (2022). The ups and downs of intelligence: The co-occurrence model and its associated research program. Intelligence, 92, 101643. 10.1016/j.intell.2022.101643Sammendrag
This paper discusses the co-occurrence model and its associated research program, and it argues that the model provides the best supported theory of secular changes in cognitive ability. The co-occurrence model offers a better solution to Cattell's paradox (relative to the alternatives in the literature), and it is able to accommodate Flynn's four major paradoxes also. A review of empirical work conducted in order to test the model's predictions demonstrates that many populations in which selection favors lower intelligence have experienced a decline in g or some cognitive ability variable that correlates with g, at the same time that average phenotypic IQ has increased. Moreover, since the co-occurrence model makes predictions about variables that are not directly concerned with cognitive ability testing, its research program can be extended to other domains of research.