The interplay between domain-specific knowledge and selected investment traits across the life span

Marianna Massimilla Rusche and Matthias Ziegler

Intelligence, 2022, vol. 92, issue C

Abstract: Domain-specific knowledge (Gkn) has been theoretically discussed and empirically proven to be a useful broad indicator of crystallized intelligence (Gc) beyond vocabulary. Based on this, the present study aimed to explore the complex interplay between selected investment traits such as personality and interests, operationalised on different hierarchical levels, and Gkn across the life span based on process models integrated into the recent Cattell-Horn-Carroll model. Divided into an online study and a laboratory study, various tests measuring constructs in the nomological net of Gkn including cognitive abilities, personality, and interests were presented along with a Gkn test to a total of N = 477 participants. Aspects of openness and interests showed varying latent correlations with Gkn depending on the knowledge domain. In addition, various linear and complex non-linear relations between different investment traits and specific knowledge domains became evident in response surface analyses. Results also suggest curvilinear age-associated changes of Gkn regarding the Humanities and Civics knowledge domains. In contrast, Science knowledge appeared to be unrelated to age. Overall, age-associated findings need to be interpreted with caution due to the cross-sectional nature of this study. Implications of the findings for a better understanding of the development of Gkn are discussed.

Keywords: Crystallized intelligence; Domain-specific knowledge; Age-associated changes; Openness; Interests (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:intell:v:92:y:2022:i:c:s0160289622000289

DOI: 10.1016/j.intell.2022.101647

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