CL11-SchedReinfandChoiceandDecsnMkgHO

CL11-SchedReinfandChoiceandDecsnMkgHO -...

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Conditioning and Learning Schedules of Reinforcement and Choice  Behavior February 23 and 28, 2011 © John M. Ackroff 2012
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© John M. Ackroff 2012  Reinforcement Schedule A program or rule governing when  reinforcement is delivered. CRF – continuous reinforcement Each instance of the target behavior is  reinforced. Partial or intermittent schedules some instances of the target behavior are  __________
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© John M. Ackroff 2012  Partial Schedules More concerned with maintenance of a  behavior than learning. FR-fixed ratio VR-variable ratio FI-fixed interval  VI-variable interval 
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© John M. Ackroff 2012  Free will “Whether someone works hard  (showing a high rate of responding) or is  lazy (showing a low rate of responding)  depends less on their personality than  on the schedule of reinforcement that is  in effect.”  (Domjan, pg.187) Skinner would be happy.
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© John M. Ackroff 2012  Recording behavior Cumulative recorder Slope shows rate of responding
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© John M. Ackroff 2012  Simple schedules Which instances of the target behavior  are reinforced is determined by a single  factor.  Ratio schedules FR – bursts of steady responding Ratio run and post-reinforcement pause.
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 Ratio schedules © John M. Ackroff 2012
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© John M. Ackroff 2012  Post-reinforcement pause Duration is a function of the upcoming  ratio  Higher ratios lead to longer post- reinforcement pauses  So maybe it’s a pre-ratio pause(?)
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© John M. Ackroff 2012  Effects of increasing  ratios Longer post-reinforcement pause  Small increases have little effect on rate  of responding or ration run  Large increases can lead to ratio strain  Pauses during the run  Or complete cessation of responding  (extinction)
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© John M. Ackroff 2012  Ratio schedules More steady response pattern with VR  than FR schedules Higher response rate with __ than __
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© John M. Ackroff 2012  Interval schedules FI “scallop”  VI shows lowest response rate of all  schedules Limited Hold Gather ye rosebuds while ye may  
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© John M. Ackroff 2012  Post-reinforcement pause Seen in FR and FI schedules Is it learned in FI? “Pre” explanation more realistic here.  
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© John M. Ackroff 2012  Comparing schedules Yoking Faster responding on ratio than interval  schedules
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© John M. Ackroff 2012  Inter-response times Short IRTs Reinforced by ratio schedules   Not reinforced by interval schedules   Long IRTs Reinforced by interval, but not ratio,  schedules  
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© John M. Ackroff 2012  Feedback functions Delivery of a reinforcer gives the animal 
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This note was uploaded on 03/07/2012 for the course 830 201 taught by Professor Leyton during the Fall '08 term at Rutgers.

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CL11-SchedReinfandChoiceandDecsnMkgHO -...

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