Sunday, May 17, 2015

Learning

Associative Learning - Certain events occur together

Types of Learning

Classical - Pavlov

  • Unconditioned Stimulus - Naturally and automatically triggers a response
  • Unconditioned Response - The unlearned, naturally occurring response to the UCS
  • Conditioned Stimulus -  After association, triggers response
  • Conditioned Response - Learned response to previously neutral stimulus
Terms
  • Acquisition - Initial stage of learning; neutral stimulus associated with UCS -> neutral stimulus elicit CR [CS before UCS; close in timing]
  • Extinction - Diminishing of conditioned response -> UCS does not follow CS
  • Spontaneous Recovery - Reappearance of extinguished CS
  • Generalization - Likelihood for stimuli similar to CS to elicit responses
  • Discrimination - Ability to distinguish between CS and other stimuli that does not signal UCS

Operant 

Learning which behavior is strengthened if followed by reinforcement or diminished if followed by punishment
  • Classical vs. Operant - Acquisition, Discrimination, SR, Generalization, Extinction
  • Classical - Automatic respondent behavior
  • Operant - Behavior influence environment, can have consequences
Edward Thorndike - (Law of Effect) Rewarded behavior likely to recover
B.F. Skinner
  • Shaping - Procedure in op. conditioning in which reinforcers guide behavior closer toward goal
  • Reinforcer - Event that strengthens behavior
    • Positive - Stimulus after response
    • Negative - Reducing/ Removal of aversive stimulus
    • Primary - innately reinforcing stimulus
    • Secondary - Reinforces through association with primary stimulus
Reinforcement Schedules
  • Continuous - Reinforces after every occurrence
  • Partial - Reinforces after certain response part
  • Fixed Ratio - Reinforces response after certain # of responses
  • Variable Ratio - Reinforces after unpredictable amount of responses
  • Fixed Interval - Reinforces after elapsed time
  • Variable Interval - Reinforces after unpredictable time intervals
Punishments - To reduce behaviors
  • Positive - Addition of something unpleasant
  • Negative - Removal of something pleasant
  • Works when done after behavior and is harsh
Token Economy - Desirable behavior -> Token
  • Can be used for prizes (reinforcers); in homes,prisons,asylums, and schools
Observational Learning - From Albert Bandura & Bobo doll -> Learning by copying behavior from others
  • Observational Learning + Operant Conditioning = Social Learning Theory
Latent Learning - Not immediately evident; Edward Toleman; Three rat experiment
Insight Learning - Wolfgang Koehler & Chimpanzees - Learn through "Ah Ha" Experience. 

3 comments:

  1. I enjoyed this blog it was very simple and straight to the point . However i do think it would help you to add color to be able to distinguish the several categories and it will help to make it more appealing to the eye.

    ReplyDelete
  2. Is spontaneous recovery like suddenly remebering a girl you used to like? That happened to soneone I know just recently.

    ReplyDelete