Module 22 Review

REVIEW Operant Conditioning

LEARNING OBJECTIVES

RETRIEVAL PRACTICE Take a moment to answer each of these Learning Objective Questions (repeated here from within this section). Then click the 'show answer' button to check your answers. Research suggests that trying to answer these questions on your own will improve your long-term retention (McDaniel et al., 2009).

22-1 What is operant conditioning?

In operant conditioning, behaviors followed by reinforcers increase; those followed by punishers often decrease.

22-2 Who was skinner, and how is operant behavior reinforced and shaped?

B. F. Skinner was a college English major and aspiring writer who later entered psychology graduate school. He became modern behaviorism’s most influential and controversial figure.
     Operant behavior operates on the environment, producing consequences. Expanding on Edward Thorndike’s law of effect, Skinner and others found that the behavior of rats or pigeons placed in an operant chamber (Skinner box) can be shaped by using reinforcers to guide closer and closer approximations of the desired behavior.

22-3 How do positive and negative reinforcement differ, and what are the basic types of reinforcers?

Reinforcement is any consequence that strengthens behavior. Positive reinforcement adds a desirable stimulus to increase the frequency of a behavior. Negative reinforcement removes an aversive stimulus to increase the frequency of a behavior.
     Primary reinforcers (such as receiving food when hungry or having nausea end during an illness) are innately satisfying—no learning is required. Conditioned (or secondary) reinforcers (such as cash) are satisfying because we have learned to associate them with more basic rewards (such as the food or medicine we buy with them). Immediate reinforcers (such as a purchased treat) offer immediate payback; delayed reinforcers (such as a weekly paycheck) require the ability to delay gratification.

22-4 How do different reinforcement schedules affect behavior?

A reinforcement schedule defines how often a response will be reinforced. In continuous reinforcement (reinforcing desired responses every time they occur), learning is rapid, but so is extinction if rewards cease. In partial (intermittent) reinforcement (reinforcing responses only sometimes), initial learning is slower, but the behavior is much more resistant to extinction. Fixed-ratio schedules reinforce behaviors after a set number of responses; variable-ratio schedules, after an unpredictable number. Fixed-interval schedules reinforce behaviors after set time periods; variable-interval schedules, after unpredictable time periods.

22-5 How does punishment differ from negative reinforcement, and how does punishment affect behavior?

Punishment administers an undesirable consequence (such as spanking) or withdraws something desirable (such as taking away a favorite toy) in an attempt to decrease the frequency of a behavior (a child’s disobedience). Negative reinforcement (taking an aspirin) removes an aversive stimulus (a headache). This desired consequence (freedom from pain) increases the likelihood that the behavior (taking aspirin to end pain) will be repeated.
     Punishment can have undesirable side effects, such as suppressing rather than changing unwanted behaviors; teaching aggression; creating fear; encouraging discrimination (so that the undesirable behavior appears when the punisher is not present); and fostering depression and feelings of helplessness.

22-6 Why did skinner’s ideas provoke controversy, and how might his operant conditioning principles be applied at school, in sports, at work, and at home?

Critics of Skinner’s principles believed the approach dehumanized people by neglecting their personal freedom and seeking to control their actions. Skinner replied that people’s actions are already controlled by external consequences, and that reinforcement is more humane than punishment as a means for controlling behavior.
     At school, teachers can use shaping techniques to guide students’ behaviors, and they can use interactive software and websites to provide immediate feedback. In sports, coaches can build players’ skills and self-confidence by rewarding small improvements. At work, managers can boost productivity and morale by rewarding well-defined and achievable behaviors. At home, parents can reward desired behaviors but not undesirable ones. We can shape our own behaviors by stating our goals, monitoring the frequency of desired behaviors, reinforcing desired behaviors, and gradually reducing rewards as behaviors become habitual.

22-7 How does operant conditioning differ from classical conditioning?

In operant conditioning, an organism learns associations between its own behavior and resulting events; this form of conditioning involves operant behavior (behavior that operates on the environment, producing rewarding or punishing consequences). In classical conditioning, the organism forms associations between stimuli—events it does not control; this form of conditioning involves respondent behavior (automatic responses to some stimulus).

TERMS AND CONCEPTS TO REMEMBER

RETRIEVAL PRACTICE Match each of the terms on the left with its definition on the right. Click on the term first and then click on the matching definition. As you match them correctly they will move to the bottom of the activity.

Question

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