Edward A. Jacobs

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Use of a time- and cost-efficient simulation procedure to assess reinforcement efficacy in humans was explored in the present study. Opioid-dependent outpatients completed questionnaires asking how many cigarettes or bags of heroin they would purchase across a range of prices. Reported consumption patterns conformed to a quantitative model that has been(More)
Four adult humans made repeated choices between two time-based schedules of points exchangeable for money: a fixed-interval schedule and a progressive-interval schedule that began at 0 s and increased in fixed increments following each point delivered by that schedule. Under reset conditions, selection of the fixed schedule not only produced a point but(More)
Recent theories of substance abuse have used value discounting of delayed rewards to partly explain the decision to take drugs. Normative-economic theory holds that an exponential function describes the effects of delay on discounting, whereas the matching law posits a hyperbolic discounting function. The ability of these functions to describe 18 human(More)
Economic theory makes three predictions about consumption and response output in a choice situation: (a) When plotted on logarithmic coordinates, total consumption (i.e., summed across concurrent sources of reinforcement) should be a positively decelerating function, and total response output should be a bitonic function of unit price increases; (b) total(More)
Panel pressing was generated and maintained in 5 adult humans by schedules of points exchangeable for money. Following exposure to a variable-interval 30-s schedule and to a linear variable-interval 30-s schedule (which permitted points to accumulate in an unseen "store" in the absence of responding), subjects were exposed to a series of conditions with a(More)
Obtaining informed consent and maintaining confidentiality are critical to the way we practice medicine and remain a crucial part of our medicolegal responsibility to the patient and to society. Nevertheless, little attention has been paid to these topics in populations who may have limited English proficiency. Despite research suggesting that language(More)
The American Academy of Pediatrics (AAP) necognizes the impact of substance abuse on society and particularly on infants, children, and adolescents. Policy statements and a manual published by the AAP have recently discussed the role of the pediatnician in the management of substance abuse,”2 the identification and treatment of drug-exposed infants,3 and(More)