Operant Conditioning and Reinforcement

Types of Reinforcers

Introduction to Reinforcement

• Positive Reinforcement: Involves presenting a pleasurable stimulus immediately after a response, strengthening that behavior.

• Negative Reinforcement: Involves reducing or removing something negative to strengthen a response.

Difference Between Positive and Negative Reinforcement

• Example: Erlinda's nagging was positively reinforced because she received a desirable stimulus (a ride to the store).

• Erlinda's mother

’s action (giving in to her demand) was negatively reinforced as it removed the unpleasant experience of her nagging.

• Other examples include:

  • Taking aspirin to relieve a headache (negative reinforcement)

  • Giving a dog a treat to stop it from barking (negative reinforcement)

  • Hitting snooze to silence an annoying alarm (negative reinforcement)

• For individuals with drug addiction, the negative reinforcement of alleviating withdrawal symptoms can lead to relapse (Baker et al., 2004).

• Clarification: Negative reinforcement is not punishment; it is misunderstood often. It is about relief from aversive conditions, hence improving behavior likelihood.

Table 7.1: Ways to Increase Behavior

• Positive Reinforcement: Add a desirable stimulus.

  • Example: Pet a dog that comes when called.

• Negative Reinforcement: Remove an aversive stimulus.

  • Example: Take painkillers to end pain.

Types of Reinforcers: Primary vs. Conditioned

Primary Reinforcers

• Definition: Innately satisfying; unlearned, often physiological needs (e.g., food, water).

Conditioned Reinforcers (Secondary Reinforcers)

• Definition: Gain power through learned association with primary reinforcers.

• Example: In a Skinner box, if a light signals food delivery, that light becomes a conditioned reinforcer.

• Common examples in human life: Money, good grades, social media likes (Rosenthal-von der Pütten et al., 2019).

Immediate and Delayed Reinforcers

Immediate Reinforcers

• Reference: Rats trained in a Skinner box will learn quickly if rewarded immediately.

• Important fact: If a rat presses a bar and the reward is delayed by more than 30 seconds, it will not associate the reward with its action (Austen & Sanderson, 2019; Cunningham & Shahan, 2019).

• For humans, immediate feedback during learning (e.g., quizzes) enhances retention (Healy et al., 2017).

Delayed Reinforcers

• Unlike rats, humans can wait for delayed reinforcers (e.g., paycheck after work).

• Control of impulses rewards future benefits, exemplifying delay of gratification.

• Referenced study: Four-year-olds preferred a larger reward in the future instead of a smaller immediate reward, which correlates with social competence and achievement in adulthood (Mischel, 2014; Watts et al., 2018).

• Impulse control linked to less risk of future impulsive crimes (Åkerlund et al., 2016; Logue, 1998a, b).

Real-World Implications

• Immediate gratification often distracts from larger, beneficial rewards (e.g., binge-watching vs. studying).

Reinforcement Schedules

Description and Importance

• Discusses how different reinforcement schedules affect behavior.

Continuous Reinforcement

• Learning occurs rapidly, hence effective for quick mastery of behavior.

• However, extinction (loss of a behavior) occurs rapidly when reinforcement stops.

• Example: Stopping food delivery decreases behavior quickly, like a vending machine failure.

Partial (Intermittent) Reinforcement

• Characteristics: Responses are sometimes reinforced, sometimes not. Learning is slower, but so is extinction.

• Example: A pigeon may peck 150,000 times before receiving food; slot machines offer unpredictable rewards.

Skinner's Schedules of Partial Reinforcement

• Fixed-Ratio Schedule: Reinforcement after a set number of responses (e.g., one free drink after ten purchases).

• Variable-Ratio Schedule: Reinforcement after unpredictable number of responses (e.g., gambling).

• Fixed-Interval Schedule: Reinforcement after a fixed amount of time (e.g., monthly paychecks).

• Variable-Interval Schedule: Reinforcement after varying time intervals (e.g., checking messages).

Punishment

Definition and Effects

• Punishment: Consequence that decreases the frequency of a preceding behavior. Examples include:

  • Positive Punishment: Administering an aversive stimulus, e.g., spray water on a dog.

  • Negative Punishment: Withdrawing a rewarding stimulus, e.g., taking away a teen's driving privileges.

• Research indicates that punishment may suppress behavior temporarily but doesn't eliminate it permanently (Gershoff & Grogan-Kaylor, 2016).

Drawbacks of Punishment

1. Behaviors can be suppressed but remain learned; reinforcement can become more frequent as aversive conditions are avoided.

2. Physical punishment does not guide desired behavior; it may only stop undesirable ones.

3. Punishment teaches discrimination; children may only cease unwanted behavior in certain contexts.

4. Punishment can incite fear of the punisher or place.

5. May increase aggression by modeling violent behavior.

Applications of Operant Conditioning

Overview

• Skinner's ideas about behavior modification through external reinforcement.

• Policies encouraging behavior changes successfully applied across various fields (education, sports, workplaces, and parenting).

In Education

• Operating conditioning for immediately reinforcing correct answers helps tailor education.

• New technologies (adaptive quizzing) help in individualized learning.

In Sports

• Using gradual reinforcement strategies in athletic training shows faster skill acquisition.

In Parenting

• Emphasis on positive reinforcement, rewarding desired behavior while minimizing harsh punishment.

Personal Application

• Steps to employ operant conditioning in personal goals include stating measurable goals, planning, monitoring behavior, and gradually reducing rewards as behaviors are mastered.

Classical vs. Operant Conditioning

Comparison

• Classical Conditioning: Deals with association between two stimuli, resulting in involuntary responses.

• Operant Conditioning: Involves associations between behavior and consequences, leading to voluntary responses.

Summary Points

Biological Constraints

• Suggests that learning is influenced by biological predispositions and cognitive processes.

• Preparedness: Organisms are biologically pre-wired to learn certain associations more easily than others, such as developing taste aversions to specific foods after illness.

• Instinctive Drift: Even when operantly conditioned, animals may revert to inherent, biologically programmed behaviors, limiting the extent to which behavior can be shaped against natural tendencies.

Cognitive Influence

• Cognitive processes shape learning and predict the association between stimuli and responses, enhancing the effectiveness of conditioning strategies.

• Expectancy: Organisms develop expectations about the consequences of their actions; reinforcement is more effective when the organism anticipates a reward.

• Latent Learning: Learning can occur without immediate reinforcement or observable behavioral changes. This form of learning relies on cognitive maps or mental representations of the environment, which are only revealed when a reward is present.

• Observational Learning: While more typically associated with social learning theory, the principle that individuals can learn behaviors by observing others and the consequences they receive highlights the significant role of cognitive processing in learning beyond direct reinforcement.

Conclusion

• A central tenet of operant conditioning is the significant role of feedback in learning behaviors, making it valuable across various applications.

• The integration of biological and cognitive factors provides a more comprehensive understanding of how and why certain behaviors are learned or not learned through conditioning.