Chapter 6 Psychology

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Psychology

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57 Terms

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Learning

  • a process by which behaviour or knowledge changes as a result of experience

    • We learn through forming associations

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Classical conditioning

a form of associative learning in which an organism learns to associate a neutral stimulus with a biologically relevant stimulus which results in a change in the response to the previously neutral stimulus

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Unconditioned stimulus (US)

a stimulus that elicits a reflexative response without learning

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Unconditioned response (UR)

a reflexative, unlearned reaction to an unconditioned stimulus

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Conditioned stimulus (CS)

a once neutral stimulus that later elicits a conditioned response because it has a history of being paired with an unconditioned stimulus

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Conditioned response (CR) 

the learned response that occurs to the conditioned stimulus 

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Acquisition 

the initial phase of learning in which a response is established - the phase in which a neutral stimulus is repeatedly paired with the US

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Extinction

the reduction of a conditioned response when a conditioned stimulus and unconditioned stimulus no longer occur together

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Spontaneous recovery

the reoccurrence of a previously extinguished conditioned response, typically after some time has passed since extinction

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Stimulus generalization

a process in which a response that originally occurred for a specific stimulus also occurs for different, though similar, stimulus

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Discrimination

occurs when an organism learns to respond to one original conditioned stimulus but not to new stimuli that may be similar to the original stimulus

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Conditioned emotional responses 

consist of emotional and physiological responses that develop to a specific object or situation

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Aversion 

involves both a feeling of disgust and a withdrawal or avoidance response

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Conditioned taste aversion

  • an aquired dislike or disgust for a food or drink because it was paired with illness

    • Taste aversions are learned very quickly - a single CS-US pairing leading to illness is typically sufficient

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Preparedness

  • a biological predisposition to rapidly learn a response to a particular class of stimuli 

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Latent inhibition

occurs when frequent experience with a stimulus before it is paired with a US makes it less likely that conditioning will occur after a single episode of illness

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Evaluative conditioning

  • experimenters pair a stimulus with either a positive or negative which causes participants to develops negative or positive feelings towards that stimulus

    • Sound with visual, auditory, olfactory (smell), taste, and tactile (touch) stimuli

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Third-person effect

where people assume that other people are more affected by advertising and mass media messages than they themselves are

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Conditioned drug tolerance

a response where over time, more of the drug will be needed to override these preparatory responses so that the desired effect can be obtained

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Operant conditioning

a type of learning in which behaviour is influenced by consequences

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Contingency

a consequence depends upon an action

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Reinforcement 

a process in which an event or reward that follows a response increases the likelihood of that response occurring again

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Law of effect

the idea that responses followed by satisfaction will occur again in the same situation, whereas those that are not followed by satisfaction become less likely

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Reinforcer

a stimulus that is contingent upon a response and that increases the probability of that response occurring again

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Punishment

a process that decreases the future probability of a response

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Punisher

a stimulus that is contingent upon a response, and that results in a decrease in behaviour

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Reinforcement

increases the chances of behaviour occurring again

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Punishment

decreases the chances of behaviour occurring again

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Positive

a stimulus is added to a situation

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Negative

a stimulus is removed from a situation

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Positive reinforcement

the strengthening of behaviour after potential reinforcers such as praise, money, or nourishment follow that behaviour

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Negative reinforcement 

involves the strengthening of a behaviour because it removes or diminishes a stimulus

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Avoidance learning

a specific type of negative reinforcement that removes the possibility that a stimulus will occur (ex. Paying bills on time to avoid a fee)

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Escape learning 

occurs if a response removes a stimulus that is already present (ex. Covering your ears to avoid loud music)

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Positive punishment 

a process in which a behaviour decreases in frequency because it was followed by a particular, usually unpleasant stimulus

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Negative punishment 

occurs when a behaviour decreases because it removes or diminishes a particular stimulus

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Shaping

reinforcing successive approximations of a specific operant response

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Chaining

involves linking together two or more shaped behaviours into a more complex sequence of actions

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Applied behaviour analysis (ABA)

involves using close observation, prompting, and reinforcement to teach behaviours (ex. Explaining how to clear dishes from the table to a child with autism)

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Primary reinforcers

consist of reinforcing stimuli that satisfy basic motivational needs - needs that affect a persons ability to survive or reproduce (ex. Reinforcing food, water, shelter, sex stimuli)

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Secondary reinforcers

  • consist of stimuli that acquire their reiforcing effects only after we learn that they have value

    • Cause dopamine to be released in parts of the basal ganglia as well as the medial regions of the frontal lobes 

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nucleus accumbens

becomes activated during the processing of all kinds of rewards, including primary ones like having sex, eating, cocaine, cigarettes, etc

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Discriminative stimulus

a cue or event that indicates that a response, if made, will be reinforced (ex. Asking mom to drive because shes in a good mood)

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Extinction

the weakening of an operant  response when reinforcement is no longer available

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Reward devaluation

when a reward is no longer valued (ex. $100 is a lot to a student but not much to a high paid doctor)

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Schedules of reinforcement

rules that determine when reinforcement is available

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Continuous reinforcement 

every response made results in reinforcement

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Partial/intermittent reinforcement

when only a certain number of responses are rewarded, or a certain amount of times must pass before reinforcement is available

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Ratio scheduling

reinforcements are based on the amount of responding

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Interval schedule

reinforcements are based on the amount of time between reinforcements

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Fixed schedule

the schedule of reinforcement remains the same over time

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Variable schedule

the schedule of reinforcement varies from reinforcement to reinforcement 

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Fixed-ratio schedule

reinforcement is delivered after a specific number of responses have been completed (ex. Rat must press lever 10 times for food)

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Variable-ratio schedule

the number of responses required to receive reinforcement varies according to an average (ex. Different trials will have different amounts - in one study a rat needs 10 lever pushes, in another only 4)

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Fixed-interval schedule

reinforces the first responses occurring after a set amount of time passes (ex. Exams every 4 weeks, your reinforcement for studying is on a fixed-interval schedule)

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Variable-interval schedule

when the first response is reinforced following a variable amount of time

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Partial reinforcement effect 

refers to a phenomenon in which organisms that have been conditioned under partial reinforcement resist extrinction longer than those conditioned under continuous reinforcementÂ