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Table 3. 

d′ and C Derived from the Corrected Probability Scores (Snodgrass & Corwin, 1988) of Hits − FA (Error), and of High Rewards − FA (Punish)

(a) High Options Tasks
(Hit + High Reward) − FA (Error + Punish)
d′
C
Size 8 2.05 (0.48) 0.39 (0.21) 
Size 32 0.63 (0.43) 1.38 (0.48) 
 
Hit − FA (Error) d′ C 
Size 8 0.44 (0.11) 1.90 (0.66) 
Size 32 0.04 (0.43) 2.10 (0.48) 
 
High Reward − Punish d′ C 
Size 8 1.96 (0.51) 0.62 (0.35) 
Size 32 0.63 (0.42) 1.53 (0.50) 
 
(b) Low Options Tasks 
Hit − FA (Error) d′ C 
Size 8 2.24 (0.52) 0.27 (0.22) 
Size 32 0.67 (0.66) 1.03 (0.58) 
(a) High Options Tasks
(Hit + High Reward) − FA (Error + Punish)
d′
C
Size 8 2.05 (0.48) 0.39 (0.21) 
Size 32 0.63 (0.43) 1.38 (0.48) 
 
Hit − FA (Error) d′ C 
Size 8 0.44 (0.11) 1.90 (0.66) 
Size 32 0.04 (0.43) 2.10 (0.48) 
 
High Reward − Punish d′ C 
Size 8 1.96 (0.51) 0.62 (0.35) 
Size 32 0.63 (0.42) 1.53 (0.50) 
 
(b) Low Options Tasks 
Hit − FA (Error) d′ C 
Size 8 2.24 (0.52) 0.27 (0.22) 
Size 32 0.67 (0.66) 1.03 (0.58) 

Total d′ and C for hits and high rewards are also shown for comparison with the control task.

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