Behavioral mechanisms of oxycodone's effects in female and male rats: II. Reinforcement magnitude and implications for impulsive/risky choice - Van Heukelom, J.T.; Blejewski, R.C.; Langford, J.S.; Vidal, P.; Garcia, E.K.; Hughes, C.E.; Pitts, R.C. (Journal of the Experimental Analysis of Behavior, 2025)