Psych Ch. 5: Learning, Memory, and Behavior Flashcards
Nonassociative Learning
Occurs when the organism is repeatedly exposed to one type of stimulus
2 important types of non associative learning
Habituation and sensitization
Habit
An action that is performed repeatedly until it becomes automatic
Habituation
A person learns to “tune out” the stimulus
ex. you move to a new house near train tracks and notice every time the train passes, but eventually you get used to the noise and don’t hear it anymore
Dishabituation (and then what happens is stimulus is reintroduced?)
Occurs when the previously habituated stimulus is removed
- -> when person is habituated to a given stimulus, and that stimulus is removed, this leads to dishabituation: the person is no longer accustomed to the stimulus
- -> If stimulus is presented again, person will react as if it was a new stimulus and is likely to respond even more strongly to it than before
ex. leave new house and don’t hear train anymore, but notice it when you come back and it is extra annoying
Sensitization
Oppose of habituation; there is an increase in the responsiveness duets either a repeated application of a stimulus or a particularly aversive or noxious stimulus
- -> instead of being able to tune out or ignore the stimulus and avoid reacting (habituation) the stimulus produces a more exaggerated response
- *Usually temporary and may not result in long-term behavior change
Desensitization
Occurs when a stimulus that previously evoked an exaggerated response (something you were sensitized to) no longer evokes an exaggerated response
Associative Learning
A process of learning in which one event, object, or action is directly connected with another
2 categories of associative learning
Classical conditioning and operant conditioning
Classical (respondent) conditioning
A process in which 2 stimuli are paired in such a way that the response to one of the stimuli changes
EX: Pavolv’s dogs-dogs salivate at the sound of a ringing bell
Ivan Pavlov is ____ conditioning
Classical
B. F. Skinner is _____ conditioning
Operant
Neutral Stimulus
A stimulus that initially does not elicit any intrinsic response
-sound of bell before experiment
Unconditioned Stimulus
A stimulus the elicits an unconditioned response; NOT a learned reaction but a biological one
-presentation of food is the unconditioned stimulus and the salivation is the unconditioned response
Conditioned Stimulus
An originally neutral stimulus (the bell) that is paired with an unconditioned stimulus (food) until it can produce the conditioned response (salivation) WITHOUT the unconditioned stimulus (food)
Conditioned Response
The learned response to the conditioned stimulus; same as UR but now occurs without the US; salivating at the sound of the bell
Processes by which classically conditioned responses are developed and maintained:
Acquisition, extinction, spontaneous recovery, generalization, and discrimination
Acquisition
The process of learning the conditioned response (when bell and food are always paired)
Extinction
Occurs when the conditioned and unconditioned stimuli are no longer paired, so the conditioned response eventually stops occurring
Spontaneous Recovery
When an extinct conditioned response occurs again when the conditioned stimulus is presented after some period of time
Generalization
Process by which stimuli other than the original conditioned stimulus elicit the conditioned response
Discrimination
Opposite of generalization; occurs when the conditioned stimulus is differentiated from other stimuli, so the conditioned response only occurs for conditioned stimuli
Taste-Aversion
Caused by nausea and/or vomiting
Operant (instrumental) Conditioning
Uses reinforcement (pleasurable consequences) and punishment (unpleasant consequences) to mold behavior **important for the reinforcement or punishment to occur around the same time as the behavior in order for learning to occur
B. F. Skinner
Worked with animals and designed an operant conditioning chamber (Skinner Box)
-Hungry rat inside box with lever, either gets food pellet or stops shock
Reinforcement
Anything that will increase the likelihood that a preceding behavior will be repeated; the behavior is supported by reinforcement
2 types of reinforcement
Positive and negative
Postive Reinforcement
Some sort of desirable stimulus that occurs immediately following a behavior
Negative Reinforcement
Some sort of undesirable stimulus that is REMOVED immediately following a behavior
ex. rat pushes lever to stop shock=removing undesired stimulus
Reinforcer
Anything the INCREASES desired behavior; both + and - reinforcement increase desired behavior
Brain structure important in negative conditioning:
Amygdala
Brain structure important in positive conditioning:
Hippocampus
Primary (unconditioned) reinforcers
Innately satisfying or desirable; we don’t need to learn to see them as reinforcers because they are integral to our survival
Ex. food-a primary + reinforcer
avoiding pain and danger-primary - reinforcers
Secondary (conditioned) Reinforcers
Learned to be reinforcers; neutral stimuli that are paired with primary reinforcers to make them conditioned (or with other secondary reinforcers) but MUST be paired with a primary reinforcer in order to produce a learned behavior
Operant conditioning relies on a reinforcement schedule, which is:
Continuous: every occurrence of the behavior is reinforced, or intermittent: occurrences are sometimes reinforced and sometimes not
Continuous reinforcement results in:
Rapid behavior acquisition (rapid learning), but also results in rapid extinction when the reinforcement ceases
Intermittent reinforcement results in:
Slower acquisition of behavior, but great persistence (or resistance to extinction)
Is it possible to condition a behavior with a continuous schedule and then maintain that behavior with an intermittent schedule?
Yes
4 intermittent reinforcement schedules:
fixed-ratio, variable-ratio, fixed-interval, and variable-interval
Ratio schedules are based on:
Number of instances of desired behavior
Interval schedules are based on:
Time
Fixed-Ratio Schedule
Provides a reinforcement after a set number of instances of the behavior
Ex. rat receives food pellet after every 10 times it pushes the lever, so after it has been conditioned it will demonstrate a HIGH rate of response (it will push the lever rapidly many times to get the food)
Variable-Ratio Schedule
Provides the reinforcement after an unpredicted number of occurrences
Ex. gambling, produces a HIGH response rate, behavior is repeated with the hopes of reinforcement
–> SLOWEST rate of extinction
Fixed-Interval Schedule
Provides the reinforcement after a set period of time that is constant; behavior will increase as the reinforcement interval comes to an end
Ex. employee reinforced by attention from the boss, so learns that boss walks by only at a certain hour, so becomes a more effective worker near that time
Variable-Interval Schedule
Provides the reinforcement after an inconsistent amount of time; produces a slow, steady behavior response rate, because the amount of time it will take to get the reinforcement is unknown
Shaping
A way to learn more complex behaviors by breaking them down and reinforcing the inbtw behaviors until the whole behavior is strung together
Ex. baby learning to walk and the inbtw steps it takes to walk
Reinforcement ____ behavior while punishment ____ behavior
Increases, decreases
Punishment
Process by which a behavior is follow by a consequence that decreases the likelihood that the behavior will be repeated
Positive Punishment
Involves the application, or pairing, of an undesired stimulus with the behavior
Negative Punishment
Involves the removal of a desirable stimulus after the behavior has occurred
Escape
An individual learns how to get away form an aversive stimulus by engaging in a particular behavior; helps reinforce the behavior so they will be willing to engage in it again
Avoidance
Occurs when a person performs a behavior to ensure an aversive stimulus is not presented
Behaviorism
Most associated with Skinner, but includes classical and operant conditioning; all psychological phenomena are explained by describing the observable antecedents of behaviors and its consequences-not concerned with the unobservable events occurring within the mind–>called the “black box”
Cognitive Psychology
Researchers began to focus on the brain, cognitions (thoughts), and their effects on how people navigate the world; do not see learning as simply due to a stimulus pairing and reinforcement
Insight Learning
When previously learned behaviors are suddenly combined in unique ways
Latent Learning
Something is learned but not expressed as an observable behavior until it is required
Cerebellum and learning
Involved with learning how to complete motor tasks
Amygdala and learning
Involved with learning fear responses
Short-term memory
lasts for second to hours and can be converted into LTM through consolidation
Long-term potentiation
- When something is learned, the synapses btw neurons are strengthened and the process of long-term potentiation begins
- Occurs when, following brief periods of stimulation, and increase in synaptic strength btw 2 neurons leads to stronger electrochemical responses to a given stimuli
- The neurons involved in the circuit develop an increased sensitivity (the sending neuron needs less prompting to fire its impulse and release its NT, and/or receiving neurons have more receptors for the NT), which results in increased potential for neural firing after a connection has been stimulated
Synaptic Strength
Thought to be the process by which memories are consolidated for LTM
Observational Learning (Or social learning or vicarious learning)
Learning through watching and imitating others
Modeling
An observer sees the behavior being performed by another person and then later with the model in mind the observer imitates the behavior they observed
Albert Bandura
Observational learning; did experiments with the Bobo Doll; showed children videos of adults being aggressive to the doll or ignoring it, and they imitated the behavior they saw
Mirror Neurons
Have been identified in the premotor cortex, supplementary motor area, primary sensory cortex, and the inferior parietal cortex
Vicarious emotions
Ex. empathy; some have proposed minor neurons are responsible for this, problems may underlie disorders sues as autism
Elaboration Likelihood Model
Explains when people will be influenced by the content of speech (logic of arguments) and when people will be influenced by other, more superficial characteristics like the appearance of the orator or the length of the speech
Message Characteristics
The features of the message itself, such as the logic and number of key points in the argument; also include more superficial things, such as the length of the speech or article and its grammatical complexity
Source Characteristics
The person or venue delivering the message, such as expertise, knowledge, and trustworthiness
Target Characteristics
Are of the person receiving the message, such as self-esteem, intelligence, mood, and other such personal characteristics-they have an important influence on whether the message will be perceived as persuasive