Midterm 2 Flashcards
compensatory response
A response that offsets the effects of the upcoming unconditioned stimulus.
instrumental conditioning
Also called operant conditioning. A form of learning in which the participant receives a reinforcer only after per- forming the desired response, and thereby learns a relationship between the response and the reinforcer.
Involves behaviors that appear to be voluntary and the relation between a response and a stimulus (the operant and a reward).
The Law of Effect
Thorndike’stheory that a response followed by a reward will be strengthened, whereas a response followed by no reward (or by punishment) will be weakened.
Thorndike Cat Experiment
The hungry cat could open the door—and escape from the box—only by performing some simple action such as pulling a loop of wire or pressing a lever (Figure 7.17); and once outside the box, the cat was rewarded with a small portion of food.
learning curves suggest that the cats learned to escape in small increments
operant
In Skinner’s system, an instrumental response that is defined by its effect (the way it operates) on the environment.
reinforcer
A stimulus delivered after a response that makes the response more likely in the future.
B. F. Skinner
The most influential of the learning theorists, Skinner made a sharp distinction between classical and operant conditioning.
discriminative stimuli
Signals an animal what sorts of behaviors will be rewarded in a given situation (S+ and S-)
Shaping
Accomplished by a little “coaching,” using the method of successive approximations.
The process of eliciting a desired response by rewarding behaviors that are increasingly similar to that response.
primary reinforcers
Stimuli with obvious importance for survival: food, water, escape from the scent of a predator
Social reinforcers
smiles and praise
Conditioned reinforcer
money–a reward that takes its value from its association with other more basic reinforcers
behavioral contrast
A response pattern in which an organism evalu- ates a reward relative to other avail- able rewards or those that have been available recently.
4 pellets vs. 16 pellets of food
Coloring “Good Player” reward
partial reinforcement
A learning condition in which only some of the organism’s responses are reinforced.
schedule of reinforcement
The rules about how often and under what conditions a response will be reinforced.
ratio schedule
A pattern of delivering reinforcements only after a certain number of responses.
interval schedule
A pattern of delivering reinforcements only after a certain amount of time has passed.
Fixed-ratio schedule
Garment workers
Variable-ratio schedule
Casino players
Fixed-interval schedule
Checking the mail
Variable-interval schedule
Hunting
learned helplessness
dog shock experiment
an acquired sense that one has lost control over one’s environment, with the sad consequence that one gives up trying
Retrieval from long-term memory
activates the hippocampus.
Retrieval from working memory
activates the perirhinal cortex.
chunking
reorganizing(or recoding) materials in working memory by combining a number of items into a single, larger unit.
maintenance rehearsal
a mechanical process of repeating the memory items over and over, giving little thought to what the items are or whether they form any pattern