1. Reinforcement and punishment of behavior by the same consequent event;Barrett;Psychol Rep,1977
2. Comparable behavior maintained under fixed-ratio and second-order schedules of food presentation, cocaine injection or d-amphetamine injection in the squirrel monkey;Goldberg;J Pharmacol Exp Ther,1973
3. Histamine as a punisher in squirrel monkeys: Effects of pentobarbital, chlordiazepoxide and H1- and H2-receptor antagonists on behavior and cardiovascular responses;Goldberg;J Pharmacol Exp Ther,1980
4. Second-order schedules: Extended sequences of behavior controlled by brief environmental stimuli associated with drug self-administration;Goldberg,1981
5. Fixed-ratio responding maintained by intravenous nicotine injections in humans and squirrel monkeys;Goldberg;Pharmacologist,1983