Table 1.

Behavioral measures in each treatment condition expressed as mean (SD)

Reaction time and performance data
Placebo Yohimbine
Congruent Incongruent Congruent Incongruent
Compatibility
RT correct 316 (34) 338 (34) 314 (28) 340 (26)
RT errors 263 (28) 274 (27) 266 (21) 275 (15)
Percentage of errors 13.1 (4.7) 26.8 (9.4) 10.6 (5.2) 23.7 (7.9)
Percentage of corrections 92.7 (7.8) 94.4 (5.8) 93.7 (6.9) 95.05 (4.2)
Posterror adjustments
RT after correct 325 (39) 323 (27)
RT after error 340 (41) 344 (38)
n errors after errors 42 (30) 32 (28)
  • RTs are expressed in milliseconds.