g versus c: comparing individual and collective intelligence across two meta-analyses

Cognitive Research: Principles and Implications

Table 2 Standardized loadings and average variance extracted across 8 samples

Group IQ subtest	Woolley et al. (2010 , Sample 1)	Woolley et al. (2010 , Sample 2)	Engel et al. ( 2014a b)	Engel et al. ( 2015a b, Sample 1)	Engel et al. ( 2015a b, Sample 2)	Barlow and Dennis (2014)^a	Bates and Gupta 2017 (Samples 2 and 3 combined)^b	Rowe (2019)
Brainstorming	.32	.58	.7	.7	1	1	.38	.57
Matrix Reasoning	.73	.61	.72	.47	.43		.74	.48
Moral reasoning	.36	.11				-.25	.62
Plan shopping trip	.57	.23					.48
Typing	.69	.48	.67	.71	0		.72
Word completion (Beginning with)		.75
Spatial problems		.47
Incomplete words (Missing letters)		.47
Estimation problem		.32
Reproducing art		.34
Unscramble words			.57	.57	.4
Sodoku			.61
Judgment tasks			.37	.3
Memory			.56	.65	.26			.92
Detection			.43	.33	.52
Decision						-.14
Mill Hill vocabulary								.24
Multiple choice vocabulary (synonyms)								.14
AVE (%)	31.32	22.26	34.87	30.88	28.05	36.07	36.50	29.58

Note. Results display those reported across 8 samples (Bates and Gupta 2017 is in combined form) and indicate the standardized loadings of the c-factor onto the respective subtest. AVE = Average variance extracted based on the statistical average of the squared loadings from each of the subtest results in the samples listed above
^aThe standardized loading from the “complex task” was not included in this table because it was used as an external (predictive) validity criterion
^bThese standardized loadings are taken from a multilevel structural equation model that combined data from the subtests used across studies 2 and 3 in Bates and Gupta (2017, p.53)