Table 1.

Behavioral results

	IWS	IO	ME
Number of trials
Reward	47.5 (2.6)	18.7 (1.8)	18.7 (1.8)
Control	41.9 (2.9)	20.0 (1.8)	23.5 (2.5)
Punishment	50.0 (3.0)	17.6 (1.5)	17.8 (1.8)
Proportion of trials (%)
Reward	55.8 (2.9)	22.0 (2.0)	24.4 (2.4)
Control	48.9 (3.3)	23.4 (2.1)	26.5 (2.5)
Punishment	58.0 (3.1)	20.7 (1.8)	23.9 (2.6)
RT during encoding (ms)
Reward	1204.1 (22.2)	1202.3 (28.7)	1214.3 (24.9)
Control	1212.1 (23.3)	1191.7 (24.9)	1210.7 (27.8)
Punishment	1213.0 (24.0)	1203.1 (23.6)	1204.2 (25.8)
RT during retrieval (ms)
Reward	1553.2 (50.6)	1867.7 (77.0)	1794.5 (79.0)
Control	1615.6 (57.5)	1910.3 (77.8)	1773.4 (59.0)
Punishment	1556.2 (53.2)	1890.7 (74.3)	1764.5 (74.6)

All values are mean (SE).

IWS, item with source; IO, item only; ME, missed encoding.