Table 2.

Adult DCDB outcome measures used in Lasso regressions.

task	measure	type of measure	variables into measure	proportion variance explained
Retrieval	Task engagement	Principal Component	Average score (+), tally (+)	95%
Laterality	Laterality index	Z-scored variable	$\frac{[R-L]}{[R+L]}\times 100$	NA
Laterality	Bias strength	Z-scored variable	Absolute value of laterality index	NA
Human interest	Average look time	Z-scored variable	Average look time	NA
Human interest	Average interaction time	Z-scored variable	Average interaction time	NA
Cylinder	Inhibitory control	Principal Component	Inhibitory control score (+), latency (inhibitory control trials) (−)	28%
Cylinder	Reversal learning	Principal Component	Reversal score (+), latency (reversal trials) (−), first side correct (reversal trials) (+)	38%
Unsolvable	Independent	Principal Component	Average time manipulating box (+), average time looking at human (−)	82%
Arm pointing	% trials correct	Z-scored variable	Arm pointing	NA
Communicative marker	% trials correct	Z-scored variable	Communicative marker	NA
Memory	% correct across delays	Principal Component	Short delays (+), long delays (+)	62%
Visual discrimination	% trials correct	Z-scored variable	Visual discrimination	NA
Auditory discrimination	% trials correct	Z-scored variable	Auditory discrimination	NA
Odor discrimination	Time spent near correct location	Principal Component	First choice (+), final choice (+), time in proximity to baited option (+), time in proximity to nonbaited option (−)	62%
Problem solving A	Success	Principal Component	Correct attempts (+), incorrect attempts (+), latency to solve (−), gaze (−), engage (+)	68%