1 Historical Origins of Behavioral Pharmacology.- What Is Behavioral Pharmacology?.- Drugs and Psychiatry.- Drug Abuse, LSD, and Behavioral Pharmacology.- Behavioral Toxicology.- Pharmacology and Behavioral Pharmacology.- Milestones in Behavioral Pharmacology.- Concluding Comments.- 2 Basic Principles of Pharmacology.- Labeling and Classification of Drugs.- Physical Properties of Drugs.- The Fate of a Drug.- Absorption and Route of Administration.- Distribution of Drugs.- Biotransformation and Elimination.- Drug Kinetics and Dose-Dependent Drug Effects.- Time Course of Drug Action.- Tolerance and Physical Dependence.- Drugs, Receptors, and Neuronal Activity.- Drug Interactions.- Individual Differences.- Concluding Comments.- 3 Overview of Behavioral Psychology.- Science and Behavioral Psychology.- Respondent Conditioning.- Operant Conditioning.- Nonhuman Research, Human Research, and Meaningful Inference.- Concluding Comments.- 4 Stimulus Properties of Drugs.- Drugs as Unconditional and Conditional Stimuli.- Distinguishing Discriminative Stimulus Functions of Drugs.- Drugs as Positively Reinforcing Stimuli.- Drugs as Negatively Reinforcing Stimuli.- Patient Noncompliance.- Determinants of Negative Reinforcement.- Concluding Comments.- 5 Drug-Behavior Interactions.- Drug Effects on Learning.- Drug Effects on Stimulus-Controlled Behavior.- Rate-Dependent Drug Effects.- Consequence-Dependent Drug Effects.- Concluding Comments.- 6 Clinical Drug Assessment.- Psychiatric Diagnosis.- Target Behaviors and Their Assessment.- Experimental Designs and Strategies.- Concluding Comments.- 7 Drug Abuse.- Drugs as Positive Reinforcers.- Drug Abuse as an Operant Response.- Treating Drug Abuse.- Concluding Comments.- 8 The Future.- References.