The future of behavioral pharmacology -- Session I Environmental Influences Affecting the Voluntary Intake of Drugs -- Environmental influences affecting the voluntary intake of drugs: an overview -- An experimental analysis of behavioral factors in drug dependence -- Second-order schedules of drug injection -- Behavioral functions of narcotic antagonists: response-drug contingencies -- Experimental models for the modification of human drug self-administration: Methodological developments in the study of ethanol self-administration by alcoholics -- Session II Interactions of Behavioral and Neurochemical Processes -- On neurochemistry and behavior -- Behavioral correlates of serotonin depletion -- Neurochemical changes associated with schedule-controlled behavior -- Serotonergic and cholinergic mechanisms during disruption of approach and avoidance behavior -- Catecholamines and drug-behavior interactions -- Session III Behavioral Toxicology -- Behavioral toxicology: A developing discipline -- Assessing the impact of low level chemicals on development: behavioral and latent effects -- Amphetamine toxicity: behavioral and neuropathological indexes -- Psychophysical evaluation of toxic effects on sensory systems -- Behavioral effects of mercury and methylmercury -- Session IV Contingencies of Reinforcement as Determinants of Drug Response -- Schedule-controlled behaviors as determinants of drug response -- Determinants of drug effects on punished responding -- The role of discriminative stimuli in modulating drug action -- Reinforcement schedules and extrapolations to humans from animals in behavioral pharmacology -- Discrete trial analysis of drug action.