Ch.6 Flashcards
Learning
Change in an organism’s behaviour or thought as a result of experience. When we learn, our brains changed along with our behaviours. Remarkably, your brain is physically different now than it was just a few minutes ago because it underwent chemical changes that allowed you to learn novel facts, including the definition of learning itself. Virtually all our behaviours are a complex stew of genetic predisposition’s and learning. without learning, we’d be unable to do much; we couldn’t walk or talk.
Habituation
Process of responding less strongly overtime to repeated stimuli. Habituation is the simplest and probably easiest form of learning to emerge in humans. Habituation makes good adaptive sense. We wouldn’t want to tend to every tiny sensation that comes across our mental radar screens because most pose no threat. Yet we wouldn’t want to habituate to stimuli that might be dangerous. Fortunately, not all repeated stimuli lead to habituation; only those we deem safe or worth ignoring do. We typically don’t habituate to powerful stimuli, like extremely loud tones or painful electrical shocks.
Some cases of repeated exposure to stimuli don’t lead to habituation but to sensitization— that is, responding more strongly overtime. Sensitization is most likely when a stimulus is dangerous, irritating, or both. 
Classical conditioning
(Pavlovian) form of learning it which animals come to respond to a previously neutral stimulus that had been paired with another stimulus that elicits an automatic response.
Classical conditioning occurs in three phases— acquisition, extension, and spontaneous recovery.
Unconditional stimulus (UCS)
Stimulus that elicits an automatic response without prior conditioning. That is, a reflexive response.
In the case of Pavlov’s dogs the unconditioned stimulus is the powder. 
Unconditional response (UCR)
Automatic response to a non-neutral stimulus that does not need to be learned. 
For Pavlov’s dogs, the unconditioned response was salivation. 
Conditional response (CR)
Response previously associated with a non-neutral stimulus that is elicited by a neutral stimulus through conditioning. The conditional response, in contrast to the unconditional response, is a product of nurture (experience), not nature (genes).
In Pavlov’s dogs, that’s when the dogs salivated when hearing the metronome
Conditional stimulus (CS)
Initially neutral stimulus that comes to elicit a response due to association with an unconditioned stimulus. 
In Pavlov’s study, it’s the Metronome.
Acquisition
Learning phase during which a conditioned response is established. Will see that the CS and UCS Are paired over and over again, the CR Increases progressively in strength. The steepness of this curve varies somewhat depending on how close together in time the CS and UCS are presented. In general, the closer in time the parent of the CS and UCS, the faster the learning occurs. About half a second delay is typically the ultimate pairing for learning. Longer delays usually decrease the speed and strength of the organisms response. This makes good evolutionary sense because the stimulus that immediately precedes a second stimulus is more likely to have caused it then a stimulus that came a long time before it. For conditioning to work effectively, you must forecast the appearance of the UCS. Again, this makes good evolutionary sense, because a stimulus that came after a second stimulus cannot have caused it.
Extinction
Gradual reduction and eventual elimination of the conditional response after the conditional stimulus is presented repeatedly without the unconditional stimulus. 
During extinction a new response, which in the case of Pavlov’s dogs was the absence of salivation, gradually “writes over” or inhibits the CR— namely, salivation. The extinguished CR doesn’t vanish completely; it’s merely over written by the new behaviour. This contrasts with some forms of traditional forgetting, in which the memory itself disappears.
Spontaneous recovery
Sudden re-emergence of an extinct Conditional response after a delay following an extinction procedure.
Renewal effect
Sudden re-emergence of the conditional response following extinction when an animal is returned to the environment in which the conditional response was acquired. The renewal effect is often adaptive. 
Stimulus generalization
Process by which conditional stimuli that are similar, but not identical, to the original condition stimulus elicit a conditional response. Stimulus generalization occurs along a generalization gradient. More similar to the original CS the new CS is, the stronger the CR will be. Stimulus generalization is typically adaptive, because it allows us to transfer what we’ve learned to new things. 
Stimulus discrimination
Process by which organisms display a less pronounced conditional response to conditional stimuli that different from the original conditional stimulus. Is usually adaptive, because it allows us to distinguish among stimuli that share some similarities but that differ in important ways. 
Higher-order conditioning
Developing a conditional response to a conditional stimulus by virtue of its association with another conditional stimulus. 
With higher-order conditioning, each progressive level results in a weaker conditioning, just as a verbal message becomes less accurate as it’s passed from one person to another.
So second-order conditioning— in which a new CS is paired with the original CS—tends to be weaker than the garden-variety classical conditioning, and third-order conditioning— in which a third CS is in turn paired with the second order CS— is even weaker. Fourth-order conditioning and beyond is typically difficult or impossible to achieve. 
Latent inhibition
Difficulty in establishing classical conditioning To a conditional stimulus we repeatedly experienced alone, that is, without the unconditional stimulus.
In other words, a familiar stimulus is more difficult to condition than an unfamiliar stimulus.
Conditioned compensatory response 
A CR that is the opposite of the UCR and serves to compensate for the UCR.
Ex: The typical effect of heroin is a decrease in blood pressure (the UCR), Whereas the cues associated with taking heroin, such as a bathroom stall in a seedy night club, will, Experience an immediate increase in blood pressure, which then helps to prevent blood pressure from dropping too low when heroin is injected. Unfortunately, this also means that the addict could inadvertently overdose if they inject heroin in a non-drug related setting, such as their parents bathroom when they go home for a visit. In fact, many addicts who “overdose” will swear that they took only a normal amount of the drug, and further questioning reveals that they took the drug in an unusual setting. In non-drug settings, with no conditional compensatory response elicited to counter the effects of the drug, the addict experiences the full effects of the drug, sometimes with fatal results. 
Fetishism
Sexual attraction to nonliving things. Often arise in part from classical conditioning. Like phobias, fetishes come in a bewildering variety of forms. 
Disgust reactions
In many cases, disgust reactions are tied to stimuli that are biologically important to us, like animals or objects that are dirty or potentially poisonous. 
Operant conditioning
Learning controlled by the consequences of the organism’s behaviour.
Psychologists also refer to operant conditioning as instrumental conditioning because the organisms response serves an instrumental function. That is, the organism “gets something” out of the response, like food, sex, attention, or avoiding something unpleasant.
Behaviourists refer to the behaviours produced by the animal to receive a award as operants because the animal “operates” on its environment to get what it wants.
Distinguishing operant conditioning from classical conditioning 
- In classical conditioning the organisms response is elicited— that is, “pulled out” of the organism’s response by the UCS, and later the CS. Remember that in classical conditioning the UCR is generally a reflexive and autonomic response that doesn’t require training. In operant conditioning, the organisms response is emitted— that is, generated by the organism in a seemingly more voluntary, less automatic fashion.
- In classical conditioning, the animal’s reward is independent of what it does. Pavlov gave his dogs meat powder regardless of whether, or how much, they salivated. In operant conditioning, the animals reward is contingent on behaviour— that is, dependent on what it does. If the animal doesn’t emit a response, it comes out empty-handed.
- In classical conditioning, the organisms responses depend primarily on the autonomic nervous system. In operant conditioning, the organisms responses depend primarily on the skeletal muscles. That is, in contrast to classical conditioning, in which learning often involves changes in heart rate, breathing, perspiration, and other bodily systems, in operant conditioning learning often involves changes in voluntary motor behavior.
Key differences between operant and classical conditioning
Classical conditioning-
Target behaviour is: Elicited automatically.
Behaviour is a function of: Stimuli that precede the behaviour.
Behaviour depends primarily on: Autonomic nervous system.
Operant conditioning-
Target behaviour is: Emitted voluntarily.
Behaviour is a function of: Consequences that follow their behavior.
Behaviour depends primarily on: Skeletal muscles.
Law of Effect
Principal asserting that if a stimulus followed by a behaviour results in a reward, the stimulus is more likely to give rise to the behaviour in the future.
Psychologist sometimes referred to earlier forms of behavioralism as S-R psychology ( S Stands for stimulus, R a response). According to S-R theorists, most of our complex behaviours reflect the progressive accumulation of associations between stimuli and responses. S-R theorists maintain that almost everything we do voluntarily— results from the gradual build up of S-R bonds due to the law of effect. 
Insight
Grasping the underlining nature of a problem.
Aha reaction!
“Aha— I got it!” Once the animal solves the problem, it gets it correct just about every time after that.
Skinner box
Small animal chamber constructed by Skinner to allow sustained periods of conditioning to be administered and behaviours to be recorded unsupervised. Electronically records an animals response and prints out a cumulative record, or graph, of the animals activity. A Skinner box typically contains a bar that delivers food when pressed, food dispenser, and often a light that signals when reward is forthcoming.
Reinforcement
Outcome or consequence of a behaviour that strengthens the probability of the behaviour. Skinner would call these actions “reinforcements” only if they make the response more likely to occur in the future.