Module 5 - Lesson 2 Flashcards
Operant Conditioning and Operational Learning
Operant Conditioning
A type of learning in which behavior is strengthened if followed by a reinforcer or diminished if followed by a punisher
Classical Conditioning
Forms an association between stimuli (a conditioned stimulus and the unconditioned stimulus it signals).
Respondent Behavior
Actions that are automatic responses to a stimulus
Operant Behavior
Behavior that operates on the environment, producing consequences.
What did B. F. Skinner invent? What is its significance?
An operant chamber, also known as the Skinner Box. It was significant because they have explored the precise conditions that foster efficient and enduring learning.
Operant Chamber
Also called a Skinner Box. Contains a bar or key that an animal can press in order to obtain a food or water reinforcer; attached devices record animals’s rate of bar pressing or key pressing.
Shaping
An operant conditioning procedure in which reinforcers guide behavior toward closer and closer approximations of desired behavior.
True or False: B. F. Skinner came up with the law of effect.
False. Edward L. Thorndike came up with the law of effect.
Law of Effect
Thorndike’s principle that behaviors followed by favorable consequences become more likely, and behaviors followed by unfavorable consequences become less likely.
What would a method using successive approximations do?
Responses are rewarded as they get progressively closer and closer to the desired final goal and ignore all other responses.
___________ gradually guide an organism’s actions towards a desired behavior.
Reinforcers
Discriminative Stimulus
Singling out a stimulus in a collection of stimuli (eg. a bird singling out faces in a collection of random images).
Reinforcer
In operant conditioning, any event that strengthens the behavior it follows.
Positive Reinforcement
Increasing behaviors by presenting positive stimuli, such as food. A positive reinforcer is any stimulus that, when presented after a response, strengthens the response.
Negative Reinforcement
Increasing behaviors by stopping or reducing negative stimuli, such as shock. A negative reinforcer is any stimulus that, when removed after a response, strengthens the response. (Note: negative reinforcement differs from punishment.)
True or False: Negative reinforcement involves the addition of a negative consequence to a behavior to discourage the behavior.
False. Negative reinforcement is not the same as punishment. Rather, it is the removal of an undesirable stimulus after a behavior is enacted.
Primary Reinforcer
An innately reinforcing stimulus, such as one that satisfies a biological need.
Conditioned Reinforcer
A stimulus that gains its reinforcing power through its association with a primary reinforcer; also known as a secondary reinforcer.
What is meant by “increasing the strength” of a preceding response?
Increasing a preceding response’s frequency when rewarding the response afterwards.
Compare positive and negative reinforcement. Give an example of each.
Positive: Adds a desirable stimulus. Eg. getting a hug, receiving a paycheck.
Negative: Removes an aversive stimulus. Eg. fastening seatbelt to turn off beeping.
True or False: A rat learns that a light reliably signals that food is coming. As a result, the rat tries to turn on the light. The light has become a conditioned reinforcer associated with food.
True. A conditioned (secondary) reinforcer is used to gain something needed, as money is used to purchase desired items.
True or False: Money is an example of a primary reinforcer.
False. Money is a prime example of a conditioned (secondary) reinforcer.
Continuous Reinforcement
Reinforcing the desired response every time it occurs.
Partial (Intermittent) Reinforcement
Reinforcing a response only part of the time; results in slower acquisition of a response but much greater resistance to extinction than does continuous reinforcement.
Fixed-Ratio Schedule
In operant conditioning, a reinforcement schedule that reinforces a response only after a specified number of responses.
Variable-Ratio Schedule
In operant conditioning, a reinforcement schedule that reinforces a response after an unpredictable number of responses.
Fixed-Interval Schedule
In operant conditioning, a reinforcement schedule that reinforces a response only after a specified amount of time has elapsed.
Variable-Interval Schedule
In operant conditioning, a reinforcement schedule that reinforces a response at unpredictable time intervals.
Compare the effects of extinction on continuous reinforcement versus intermittent reinforcement.
While learning occurs more rapidly with continuous reinforcement, extinction occurs more quickly. However, intermittent reinforcement ensures a better likelihood of long-term memorization and a lesser chance of extinction.
A free drink after every 10 purchases is an example of what type of reinforcement schedule?
Fixed-Ratio Schedule