Spiga, Ralph; Martinetti, Margaret P; Meisch, Richard A et al. (2005) Methadone and nicotine self-administration in humans: a behavioral economic analysis. Psychopharmacology (Berl) 178:223-31
|
Spiga, R; Day 2nd, J D; Schmitz, J M et al. (1998) Context modulates effects of nicotine abstinence on human cooperative responding. Exp Clin Psychopharmacol 6:390-8
|
Spiga, R; Schmitz, J; Day 2nd, J (1998) Effects of nicotine on methadone self-administration in humans. Drug Alcohol Depend 50:157-65
|
Meisch, R A; Spiga, R (1998) Matching under nonindependent variable-ratio schedules of drug reinforcement. J Exp Anal Behav 70:23-34
|
Spiga, R; Macenski, M J; Meisch, R A et al. (1997) Human ethanol self-administration. I: The interaction between response requirement and ethanol dose. Behav Pharmacol 8:91-100
|