Effects of number and percentage of rewarded trials on the acquisition and extinction of lever pressing using a discrete-trial procedure.

1965 ◽  
Vol 70 (6) ◽  
pp. 575-579 ◽  
Author(s):  
John J. Porter ◽  
James J. Hug
Keyword(s):  
Discrete Trial ◽  
Trial Procedure ◽  
Discrete Trial Procedure ◽  
Lever Pressing

An Automated System for Discrete-Trial Research with Animals

1964 ◽  
Vol 14 (2) ◽  
pp. 424-426 ◽  
Author(s):  
R. C. Atkinson ◽  
R. C. Calfee
Keyword(s):  
Choice Behavior ◽  
Automated System ◽  
Discrete Trial ◽  
Trial Procedure ◽  
Discrete Trial Procedure ◽  
Free Operant ◽  
Card Punch

A system has been constructed for the study of two- and three-choice behavior in animals, using either a free operant or discrete-trial procedure. An IBM-026 card punch is utilized to automatically program stimulus and reinforcement events, and to record choices and choice latencies. Eight Ss may be run simultaneously in the apparatus.

Some Effects of Incremental Delay of Reward on the Discrete-Trial Lever-Pressing of Rats

1980 ◽  
Vol 93 (2) ◽  
pp. 345
Author(s):  
Patrick E. Campbell ◽  
Brian M. Kruger ◽  
Jane Holmes Steele ◽  
Patricia Eickmeyer Wood
Keyword(s):  
Discrete Trial ◽  
Lever Pressing ◽  
Delay Of Reward

Rapid Reduction of Off-Task Behavior in Retarded Children by Use of Light-Out

1985 ◽  
Vol 56 (2) ◽  
pp. 499-509 ◽  
Author(s):  
Philip W. Drash ◽  
Mary R. Murrin ◽  
Sheldon E. Jordan ◽  
Hewitt B. Clark
Keyword(s):  
Positive Reinforcement ◽  
Response Rate ◽  
Discrete Trial Training ◽  
Discrete Trial ◽  
Rapid Reduction ◽  
Therapeutic Implications ◽  
Task Behavior ◽  
Lever Pressing ◽  
Alternating Treatment Design ◽  
Treatment Design

The effectiveness of a light-out procedure in reducing periods of off-task behavior in retarded children was evaluated. Four children ages 3 to 10 yr. (mean IQ 32) were trained on a lever-pressing task as an analogue to discrete-trial training procedures. Positive reinforcement sessions were alternated with concurrent escape/avoidance procedures during which light-out was contingent upon nonresponding in an alternating treatment design. The light-out contingency rapidly and effectively reduced the length of time off-task and slightly increased response rate. Educational and therapeutic implications for retarded and autistic children include adaptation of the procedure for decreasing off-task behavior during discrete-trial training, such as in speech and language remediation.

scholarly journals Dynamics of pre- and post-choice behaviour: rats approximate optimal strategy in a discrete-trial decision task

2015 ◽  
Vol 282 (1803) ◽  
pp. 20142963 ◽  
Author(s):  
Justine Fam ◽  
Fred Westbrook ◽  
Ehsan Arabzadeh
Keyword(s):  
Optimal Strategy ◽  
Decision Task ◽  
Discrete Trial ◽  
Choice Behaviour ◽  
Response Latencies ◽  
Discrete Trial Procedure ◽  
Average Probability ◽  
The Relationship ◽  
Renewal Cycle

We simulate two types of environments to investigate how closely rats approximate optimal foraging. Rats initiated a trial where they chose between two spouts for sucrose, which was delivered at distinct probabilities. The discrete trial procedure used allowed us to observe the relationship between choice proportions, response latencies and obtained rewards. Our results show that rats approximate the optimal strategy across a range of environments that differ in the average probability of reward as well as the dynamics of the depletion-renewal cycle. We found that the constituent components of a single choice differentially reflect environmental contingencies. Post-choice behaviour, measured as the duration of time rats spent licking at the spouts on unrewarded trials, was the most sensitive index of environmental variables, adjusting most rapidly to changes in the environment. These findings have implications for the role of confidence in choice outcomes for guiding future choices.

Does Discrete Trial Teaching Trump Experimenter Differences?

2011 ◽  
Author(s):  
Marissa Dickinson ◽  
Maria Garcia ◽  
Sammantha DeMartin ◽  
Rachel Basset ◽  
Lauren Pirrmann
Keyword(s):  
Discrete Trial Teaching ◽  
Discrete Trial
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