Response Rates on Variable-Interval Schedules: Sequential Interresponse Time Requirements and Reinforcement Rate

1979 ◽  
Vol 29 (2) ◽  
pp. 255-260
Author(s):  
T. D. Nelson
Keyword(s):  
Interresponse Time ◽  
Variable Interval ◽  
Response Rates ◽  
Reinforcement Rate ◽  
Time Requirements

Rate of Change in Reinforcement Density as a Parameter of Behavioral Contrast

1980 ◽  
Vol 47 (3_suppl) ◽  
pp. 1071-1075
Author(s):  
Gerri E. Schwartz
Keyword(s):  
Behavioral Contrast ◽  
Variable Interval ◽  
Reinforcement Rate ◽  
Constant Component ◽  
Rate Of Change ◽  
Variable Component ◽  
Reinforcement Density ◽  
The Third ◽  
Component Variable ◽  
Baseline Values

One component (variable component) of a three-ply multiple schedule was gradually changed over 55 sessions from variable-interval (VI) 1-min. to VI 5-min. by exposing pigeons to the following sequence of values: VI 1, VI 2, VI 3, VI 4, VI 5-min. Subsequently, the reinforcement density in a second component (following component) was abruptly changed from VI 1-min. to VI 5-min. The effects of both gradual and abrupt reductions in reinforcement density were examined in the third component (constant component) in which the schedule remained unchanged. For all subjects, the greatest increase over baseline values occurred during the abrupt reduction in reinforcement rate.

A DRL Schedule with Temporal Adjustment

1966 ◽  
Vol 19 (2) ◽  
pp. 579-584 ◽  
Author(s):  
Peter C. Wolff ◽  
Roger E. Ulrich
Keyword(s):  
Water Deprivation ◽  
Response Rates ◽  
Two Component ◽  
Time Requirements ◽  
Drl Schedule ◽  
First Session

Rats under 48-hr. water deprivation were placed on a DRL schedule that required IRTs of 30 sec. or 60 sec. for the first component and longer IRTs of 120 sec., 150 sec., 180 sec., 240 sec., or 300 sec. for the second component. Ss were switched back and forth between components on the basis of their IRTs. These two-component DRL schedules utilizing various time requirements quickly produced rates of response as low as 20 per hour and still maintained responding over a 4-hr. session. When Ss were changed from the initial two-component DRL schedules to another, shifts in response rates occurred during the first session after a change and remained steady over several additional sessions.

scholarly journals WITHIN-SESSION RESPONSE RATES WHEN REINFORCEMENT RATE IS CHANGED WITHIN EACH SESSION

1995 ◽  
Vol 64 (2) ◽  
pp. 237-246 ◽  
Author(s):  
Frances K. McSweeney ◽  
Jeffrey N. Weatherly ◽  
Samantha Swindell
Keyword(s):  
Response Rates ◽  
Reinforcement Rate

Response Persistence under Variable-Time Schedules following Immediate and Unsignalled Delayed Reinforcement

2003 ◽  
Vol 56 (3b) ◽  
pp. 267-277 ◽  
Author(s):  
Adam H. Doughty ◽  
Kennon A. Lattal
Keyword(s):  
Multiple Schedule ◽  
Relative Rate ◽  
Variable Interval ◽  
Response Rates ◽  
Fixed Time ◽  
Response Strength ◽  
Food Delivery ◽  
Delayed Reinforcement ◽  
Variable Time ◽  
Response Persistence

Key pecking of three pigeons was maintained in separate components of a multiple schedule by either immediate reinforcement (i.e., tandem variable-time fixed-interval schedule) or unsignalled delayed reinforcement (i.e., tandem variable-interval fixed-time schedule). The relative rate of food delivery was equal across components, and this absolute rate differed across conditions. Immediate reinforcement always generated higher response rates than did unsignalled delayed reinforcement. Then, variable-time schedules of food delivery replaced the contingencies just described such that food was delivered at the same rate but independently of responding. In most cases, response rates decreased to near-zero levels. In addition, response persistence was not systematically different between multiple-schedule components across pigeons. The implications of the results for the concepts of response strength and the response-reinforcer relation are noted.

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