“…Yet the g- factor, which is thought to be situationally robust (e.g., Schmidt and Hunter 1981 1998 ) and highly stable across the human lifespan (e.g., Deary et al 2013 ), should, in principle, retain certain aspects of these characteristics at the group level of analysis such that the g- factor, even when averaged across group members, shares a significant relationship with true G g (see Kozlowski and Klein 2000 , for arguments in support of this view). In addition to Bates and Gupta ( 2017 ), another study that directly tested and supported this hypothesis was conducted by Imbimbo et al ( 2020 ) who asked 550 high-school students to complete alternative (odd/even) sets of Raven’s Advanced Progressive Matrices, first as individuals, then as 110 randomly allocated groups comprised of five members each. A generalized linear mixed model revealed a strong relationship between the probability function of selecting the correct answer at the individual level and selecting the correct answer at the group level using a majority vote method.…”