Table 2.

Sample Descriptive Statistics

	n	Mean (SD)	Spearman-Brown Reliability
Effort-P3
High effort	64	10.93 (9.36)	0.94
Low effort	64	7.26 (7.22)	0.90
SPN
High effort	65	−0.87 (3.29)	0.68
Low effort	65	−1.35 (3.19)	0.76
RewP
High effort	62	7.87 (6.13)	0.52
Low effort	62	8.16 (6.22)	0.28
Feedback-P3
High effort	62	20.82 (9.97)	0.93
Low effort	62	22.19 (10.03)	0.88

RewP, reward positivity; SPN, stimulus-preceding negativity.