Reinforcing effects of d-amphetamine: influence of novel ratios on a progressive-ratio schedule.
Sevak
Rajkumar J
RJ
aDepartments of Behavioral Science bPsychiatry cAnatomy and Neurobiology dPediatrics, College of Medicine ePsychology, College of Arts and Science, University of Kentucky, Lexington, Kentucky.
Stoops
William W
WW
Glaser
Paul E A
PE
Hays
Lon R
LR
Rush
Craig R
CR