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. Author manuscript; available in PMC: 2010 Mar 9.
Published in final edited form as: Psychopharmacology (Berl). 2008 Aug 7;201(2):183–193. doi: 10.1007/s00213-008-1261-1

Fig. 2.

Fig. 2

Reaction times (±SEM). Within groups (paired t test): *Control: Hard>Easy, p<0.01, MA: Hard>Easy, p<0.01; **Control: Easy<ME, p<0.01, MA: Easy<ME, p<0.001. Between groups (two sample t test): ***MA>Control (t(34)=2.591, p=0.015). The groups did not differ in reaction times on the Hard or Easy choices