Multiple variable interval schedule behaviour in humans: effects of ethanol, mood, and reinforcer size on responding maintained by monetary reinforcement

1998 ◽  
Vol 9 (7) ◽  
pp. 619-630 ◽  
Author(s):  
S Glautier ◽  
J Bankart ◽  
U Rigney ◽  
P Willner
Keyword(s):  
Variable Interval ◽  
Variable Interval Schedule ◽  
Interval Schedule ◽  
Multiple Variable ◽  
Monetary Reinforcement

Sucrose Concentration as Reinforcement for Lever Pressing by Monkeys

1956 ◽  
Vol 2 (3) ◽  
pp. 381-384 ◽  
Author(s):  
Donald G. Conrad ◽  
Murray Sidman
Keyword(s):  
Food Deprivation ◽  
Rhesus Monkeys ◽  
Response Rate ◽  
Sucrose Concentration ◽  
Variable Interval ◽  
Variable Interval Schedule ◽  
Interval Schedule ◽  
Satiation Effect ◽  
Low Concentrations ◽  
Lever Pressing

3 rhesus monkeys were given various concentrations of sucrose for lever pressing on a variable interval schedule of reinforcement. 7 sucrose concentrations were studied at 2 levels of food deprivation. The response rates accelerated rapidly with increasing concentrations, and then declined after reaching a maximum, generally between 15 and 30% sucrose concentration. The decline was attributed to a satiation effect. The higher level of food deprivation tended to increase the response rate at all but the extreme high and low concentrations.

Effects of Pairing Electric Shock with Reinforcement Delivered on a Variable-Interval Schedule

1976 ◽  
Vol 39 (2) ◽  
pp. 483-489
Author(s):  
Daniel M. Doleys ◽  
Robert S. Davidson
Keyword(s):  
Linear Relationship ◽  
Shock Intensity ◽  
Electric Shock ◽  
Variable Interval ◽  
Variable Interval Schedule ◽  
Response Suppression ◽  
Interval Schedule ◽  
Total Response ◽  
Schedule Of Reinforcement ◽  
Response Facilitation

Gradually increased electric shock was superimposed on responding maintained on a VI 60-sec. schedule of reinforcement. Shock was contingent upon the reinforcement producing response and preceded reinforcement delivery. Following total response suppression, shock was removed and then reintroduced at selected intensities. The previously observed monotonic linear relationship between rate of responding and shock intensity was not recorded. Rather, post-reinforcement response bursts and two distinct patterns of response facilitation emerged.

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