Table 1.

Descriptive and inferential statistics for the ERP response to monetary and social feedback

	Monetary reward task			Social reward task			Monetary vs social
	Mean (s.d.)	95% CI		Mean (s.d.)	95% CI		Pearson’s r	ICC [95% CI]
		Lower bound	Upper bound		Lower bound	Upper bound
Gain/like feedback	16.96 (7.52)	15.56	18.35	12.03 (6.91)	10.74	13.31	0.61**	0.66 [0.23, 0.83]
Loss/dislike feedback	12.36 (6.90)	11.08	13.64	6.99 (6.87)	5.71	8.27	0.55**	0.60 [0.12, 0.79]
RewP	4.59 (4.50)	3.76	5.43	5.04 (4.89)	4.13	5.95	0.26**	0.41 [0.14, 0.59]

Note. For ICCs, a two-way mixed-effects model (model 3 in Shrout and Fleiss, 1979) was conducted as a more conservative measure of absolute agreement. Qualitative cutoffs for ICCs are as follows: ICCs < 0.50: poor agreement, 0.50 < ICC < 0.75: moderate agreement, 0.75 < ICC < 0.90: good agreement, ICC > 0.90: excellent agreement; CI, confidence interval; ICC, intraclass correlation coefficient.

^**P < 0.01.