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Reinforcing and discriminative stimulus properties of mixed agonist-antagonist opioids.
- A. M. Young, K. R. Stephens, D. Hein, J. Woods
- Psychology, Medicine
- The Journal of pharmacology and experimental…
- 1 April 1984
Nine mixed agonist-antagonist opioids were evaluated in macaque monkeys for their ability to serve as positive reinforcers and for their discriminative stimulus similarity to etorphine and… Expand
Behavioral personal digital assistants: The seventh generation of computing
An existing adaptive network software system, based on behavior analysis and developed since 1983, can be extended to provide a new generation of software systems capable of acquiring verbal behavior. Expand
Antagonism of the discriminative effects of ethylketazocine, cyclazocine, and nalorphine in macaques
Abstractdl-Ethylketazocine (EKC, 0.01 mg/kg) and saline were established as discriminative stimuli for food-maintained responding in macaque monkeys. Thirty consecutive presses on a right or left… Expand
Dynamic resource allocation using adaptive networks
- K. R. Stephens, W. R. Hutchison, Sharon S. Hormby, T. M. Bell
- Mathematics, Computer Science
- 1 June 1990
A hybrid approach which combines the strengths of adaptive networks and behavioral economics to optimize the allocation of resources. Expand
Comparison of the Trucut and Surecut liver biopsy needles.
- E. R. Littlewood, I. Gilmore, I. Murray-lyon, K. R. Stephens, F. Paradinas
- Journal of clinical pathology
- 1 July 1982
The Trucut and Surecut liver biopsy needles have been compared in a prospective randomised study. Although the Surecut specimens were longer and heavier they tended to fragment during processing.… Expand
Behavior Analysis and the Quest for Machine Intelligence.
The origins and development of state notation and SKED
We developed the SKED software system for the PDP-8 family of computers, based on state notation. Expand
Variable versus Fixed Immediacies of Reinforcement for Responding and Non-Responding
- K. R. Stephens
13 C NMR Studies of some Bicyclo[2.2.2]Octanones. a Characterization of the Isomeric 1,5,5,8-Tetramethylbicyclo[2.2.2]Octan-2-Ones
The 13C nmr spectra of a series of sixteen bicyclo[2.2.2]octenones and octanones have been determined to examine the variation of 13C shieldings with methyl substitution. The well-defined effects… Expand