Table 1.

Descriptions and Factor Loadings of the Executive Function Tasks

		Standardized Factor Loading
Measure	Description	Common EF	Updating- Specific	Shifting- Specific
Inhibiting
Antisaccade	Avoid the prepotent response to saccade to a cue and instead look in the opposite direction to view a briefly displayed target	.54	-	-
Stop-signal	Stop a dominant categorization response on infrequent trials in which an auditory signal sounds	.50	-	-
Stroop	Avoid the prepotent tendency to read a word and instead name the color of the font in which the word is printed	.41	-	-
Updating
Keep-track	From a series of 15 words, remember the most recently presented exemplar of 2-4 specified categories	.38	.63	-
Letter-   memory	During a series of letters, continuously rehearse the last three letters and recall them at the end	.38	.47	-
Spatial 2-   back	Respond whether an indicated location is the same as that two trials back	.40	.17	-
Shifting
Number-   letter	Categorize whether the number in a letter-number pair is odd or even, or whether the letter is a consonant or vowel, depending on the location of stimuli (top or bottom of screen)	.42	-	.45
Color-shape	Categorize whether a colored shape is a circle or triangle, or red or green, depending on a cue letter (C or S) appearing above the stimulus	.39	-	.43
Category-   switch	Categorize a word as living or nonliving, or small or big, depending on a cue symbol appearing above the word	.45	-	.59

Note. Standardized factor loadings (all p < .05) from a model with no genetic risk score or principal components included. Models included the full sample (n = 1,549) although only a subset of 389 individuals contributed to the correlation with the genetic risk scores. The model showed an acceptable fit, χ²(21) = 97.22, p < .001; CFI = .959; RMSEA = .048. EF = executive function.