Psychology of Music Learning Miksza Behaviorism Part I • Classical Conditioning – Assumptions – Method – Phenomena – Counter conditioning – Figures There is more detail in this section of the outline than is presented in Driscoll… it’s good information – but focus on Part II for the purposes of this class… Behaviorist Assumptions • John Watson (Psychology as the Behaviorist Views It, 1913) – Introduced the term Behaviorism – Advocated for objective, scientific, observable forms of inquiry • • • • • • • Equipotentiality Learning best studied through stimuli and responses Internal processes largely excluded (radical perspective) Learning=change in behavior Empiricist/blank slate Learning greatly effected by the environment Parsimony Classical Conditioning • Ivan Pavlov (Conditioned Reflexes, 1927) – Basic Form of 3 Steps • Neutral stimulus – No response • Neutral stimulus/unconditioned stimulus paired – unconditioned response • Conditioned stimulus – conditioned responses • Signal learning • Behavior Elicited – not necessarily conscious response Watson’s take… • Law of frequency – “The more frequently a stimulus and response occur in association with each other, the stronger the S-R habit will become (Ormrod, p. 43).” • Law of recency – “The response that has most recently occurred after a particular stimulus is the response most likely to be associated with that stimulus (Ormrod, p. 43).” • Extreme position regarding nature/nurture issues… Classical Conditioning Phenomena • Extinction – Behavior goes away • Spontaneous Recovery – Behavior comes back • Stimulus Generalization – Response occurs when presented with ‘similar’ stimuli • Stimulus Discrimination – When an individual learns not to generalize a response to ‘similar’ stimuli • Higher-order Conditioning – Another ‘layer’ of pairing stimuli and responses… More Recent Developments in Classical Conditioning • Contingency/contiguity vs. random or coincidence-like pairing • Salience of the conditioned stimulus – Some stimulus/response pairings make more sense than others • Cognition a part of the process – S/R relationships among mental representations – Tolerance to drugs Altering Conditioned Behaviors • Difficult to do… involuntary • Extinction – Problems: unpredictable speed, avoidance, spontaneous recovery • Counter-conditioning (better than extinction) – New response – must be incompatible with old response – Must identify a salient stimulus – Gradually introduced new stimulus in conjunction with old stimulus • Threshold method – Present a stimulus faintly at first and then gradually increase the strength • Systematic desensitization – An example of counter-conditioning that is often applied to anxiety problems • Exhaustion – The stimulus is presented continuously until the individual can no longer respond in a habitual way Other key figures… • Edwin Guthrie – A stimulus and response relationship can form at full strength in just one trial • Clark Hull – Intervening or organismic variables are also important to consider – A departure from radical behaviorist views in that internal elements were seen as important… – ‘Drive’ a major factor – laid ground work for early theories of motivation Part II • Operant Conditioning – Groundwork – True theory – Types of reinforcers – Reinforcement vs. Punishment – Conditions… – Phenomena – Eliminating undesirable behavior – Limitations of reinforcement Groundwork for Operant Conditioning • Edward Thorndike – Law of Effect • Responses followed by satisfaction are strengthened • Responses followed by discomfort are weakened • Originally focused on rewards and punishments • Later revised without emphasis on punishment – Emphasized the importance of consequences in the learning process… (Ormrod, p. 50) Operant Conditioning Proper • B. F. Skinner – Shifted emphasis from strength of S-R connections… …to… …simply the strengthening of responses • A flip-flop of S-R to R-S (…or R-C) – “A response that is followed by a reinforcer is strengthened and is therefore more likely to occur again.” – “Reinforcer – a stimulus or event that increases the frequency of a response it follows (Ormrod, p. 52).” – Rather than ‘elicit’ the focus is now on the individual ‘emitting’ a behavior, or ‘operating’ on their environment Types of Reinforcers • Primary – Those that satisfy an inherent biological need or desire • Secondary/Conditioned – Those that satisfy all other needs or desires – Material – Social – Activity – Intrinsic Positive/Negative Reinforcers vs. Punishment • Reinforcer – response increases • Punishment – response decreases • Positive reinforcer – present something positive to increase certain response • Negative reinforcer – take something away to increase a certain response • Punishment – present or take something away to decrease a certain response • (see Driscoll, Figure 2.2, p. 37) Conditions for operant conditioning… • Reinforcer occurs after response… • Reinforcer comes immediately… • Reinforcer is contingent on the desired response... • Magnitude and appeal of reinforcer affects responses learned… • Consistency of reinforcement is important… Operant Conditioning Phenomena • Baseline – Behavior in absence of reinforcer • Terminal behavior – Desired response at end of reinforcement program • Extinction – When response is no longer followed by a reinforcer and the behavior ceases • Superstition – When reinforcement is random and not contingent on behavior • Shaping – Reinforcing successive approximations of a task • Chaining – Reinforcing one response at a time, and then a sequence of responses – simple to complex behaviors Operant Conditioning Phenomena Continued… • Stimulus generalization – Once a response/reinforcer connection is learned an individual will likely respond similarly to similar reinforcers • Stimulus discrimination – When an individual learns under what circumstances a response will or will not be reinforced… • Stimulus control – Cueing/Prompting • Verbal or non-verbal cues that indicate a desired response (flicking lights, conducting, etc.) – Setting events • Designing an environment that is conducive to the type of response desired… • Learned Helplessness – The passive acceptance of events seemingly beyond one’s control Schedules of Reinforcement • Ratio – Reinforcements contingent on a certain number of behaviors • Interval – Reinforcement contingent on the passage of time • Fixed – Occurrence of reinforcement is consistent • Variable – Occurrence of reinforcement is not consistent • (See Driscoll, Figure 2.5 and 2.6, p. 50 and 51) Eliminating Undesirable Behavior… • Extinguishing – A particular response is no longer reinforced • Non-contingent consequences – May be beneficial for those who act out for attention • Reinforcing other and/or incompatible behaviors – Differential reinforcement • Contingency contracts • Personalized system of instruction – IEPS and diverse learners • CAI – Computer Assisted Instruction Limitations of Reinforcement • The reinforcer isn’t salient… • Lack of consistency in reinforcement… • Cost/benefit analysis results in an imbalance… • Shaping a desired behavior too quickly… • Extrinsic reinforcer may undermine intrinsic interest… Basic educational implications related to Behaviorist principles… • • • • Practice Positive learning environment Methods for breaking bad habits Assessing learning by looking for behavioral changes Part III • Applied Behavioral Analysis (ABA) – Essential components ABA Assumptions and Pseudonyms… • Assumptions – Behavioral issues are related to past and present environmental circumstances… – Operant Conditioning concepts • Reinforcement, extinction, shaping, chaining, stimulus control, reinforcing incompatible behaviors, etc… – A=Baseline condition – B=Treatment/Intervention – A=Return to Baseline • Pseudonyms and similar processes – – – – Behavior Management… Behavior modification… Behavior therapy… Contingency management... Components of ABA • Present and desired behavior are specified in observable, measurable terms (Driscoll step 1) • Behavior is measured before and during intervention • Salient environmental/Intervention conditions and/or reinforcers are identified (Driscoll step 2) • A specific intervention/treatment plan is developed – with the individual when appropriate… (Driscoll step 3) • Treatment monitored for effectiveness and modified along if necessary… (similar to Driscoll step 4 and 5) • Efforts made to show how change in behavior can be generalized to other situations… • Treatment is phased out eventually…