In this preregistered multi-level meta-analysis, we aim to clarify the association of need for cognition (NFC) and typical intellectual engagement (TIE) with intelligence and executive functions. Multi-level models with robust variance estimation were specified and risk of bias was assessed with the adapted
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In this preregistered multi-level meta-analysis, we aim to clarify the association of need for cognition (NFC) and typical intellectual engagement (TIE) with intelligence and executive functions. Multi-level models with robust variance estimation were specified and risk of bias was assessed with the adapted Risk of Bias Utilized for Surveys Tool. NFC/TIE was associated with fluid intelligence (Gf;
r = 0.18,
p < .001,
N = 25,367), crystallized intelligence (Gc;
r = 0.26,
p < .001,
N = 14,651), general intelligence (
r = 0.23,
p < .001,
N = 8479), and working memory (WM) capacity (
r = 0.15,
p < .001,
N = 5921). Associations with WM updating (
r = 0.08,
p = .111,
N = 1084), inhibition (
r = 0.04,
p = .077,
N = 2895), and shifting (
r = 0.01,
p = 0.642,
N = 1727) were non-significant. NFC (
r = 0.19) was more strongly related to Gf than TIE (
r = 0.12;
F(1, 12.10) = 5.04,
p = .045) whereas TIE (
r = 0.35) was more strongly associated with Gc than NFC (
r = 0.24;
F(1, 13.10) = 10.70,
p = .006). Correlations with Gc significantly declined over time (
b1 = −0.006, β
1 = −0.04,
p = .010). Results provide strong evidence for small-to-moderate associations of NFC and TIE with Gf, Gc, general intelligence, and WM capacity, and at best small associations with core executive functions.
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