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. Author manuscript; available in PMC: 2017 Jun 1.
Published in final edited form as: Psychopharmacology (Berl). 2016 Mar 1;233(11):2055–2063. doi: 10.1007/s00213-016-4260-7

Fig. 2.

Fig. 2

Economic demand curves for cocaine ($5 units) following maintenance on placebo (circles), 70 mg phendimetrazine (squares), 140 mg phendimetrazine (triangles), and 210 mg phendimetrazine (diamonds). Representative curves were fit to mean data using the exponential demand question (Hursh and Silberberg 2008). Individual values indicate mean and error bars indicate 1 S.E.M. Phendimetrazine did not impact Cocaine Purchase Task outcomes.