PSYCH 111: Introduction to Psychology: Week 9: Chapter 6 Quizzes: Learning

Correct Answer:

A. A learned avoidance of a taste when it has been paired with illness, even after several hours

Explanation:

Taste aversion is a unique form of classical conditioning in which an organism learns to associate the taste of a particular food (conditioned stimulus) with illness or nausea (unconditioned stimulus). Unlike most types of conditioning, which require immediate pairing, taste aversion can develop even when several hours separate the ingestion of the food and the onset of illness. This makes it an adaptive survival mechanism, helping organisms avoid harmful or poisonous substances.

Why Other Options Are Wrong:

B. A preference for foods eaten repeatedly in short intervals

This describes food preference learning or habit formation, not taste aversion.

C. A conditioned response that only occurs when the stimulus and response happen immediately together

Taste aversion is unique because it does not require immediate pairing; this answer reflects typical conditioning, not taste aversion.

D. A general tendency to associate all pleasant tastes with positive emotions

This is more related to reinforcement of pleasurable experiences, not avoidance conditioning due to illness.

Correct Answer:

B. Reinforcers that have innate reinforcing qualities, such as food, water, sleep, and pleasure

Explanation:

Primary reinforcers are naturally reinforcing because they satisfy basic biological needs or provide inherent pleasure. They do not need to be learned through experience or association. Examples include food, water, shelter, sleep, sex, and physical comfort. These reinforcers are essential for survival and well-being, and organisms maintain a natural drive for them. For instance, jumping into a cool lake on a hot day is innately rewarding because it reduces discomfort and provides pleasure.

Why Other Options Are Wrong:

A. Reinforcers that gain their power through association with other reinforcers, such as money or praise

These are secondary (conditioned) reinforcers, not primary reinforcers.

C. Reinforcers that only work after repeated pairings with conditioned stimuli

This again describes secondary reinforcers, which require learning, not innate reinforcement.

D. Reinforcers that decrease the likelihood of behavior by removing something pleasant

This defines negative punishment, not primary reinforcement.

Correct Answer:

B. Reinforcing a behavior each time it occurs

Explanation:

Continuous reinforcement is a schedule in which every occurrence of the target behavior is immediately rewarded. It is the most effective schedule for teaching a new behavior because it establishes a strong and direct connection between the behavior and the reward. For example, when training a dog to sit, giving the dog a treat every single time it sits ensures the dog quickly learns that sitting results in a positive consequence. Similarly, in Skinner’s experiments, rats learned to press a lever because each press reliably delivered food. The immediacy and consistency of reinforcement make continuous reinforcement powerful for initial learning. However, behaviors learned under continuous reinforcement can extinguish quickly once reinforcement stops, since the learner expects a reward every time.

Why Other Options Are Wrong:

A. Reinforcing a behavior only after a set number of responses

This describes a fixed-ratio schedule, not continuous reinforcement. In a fixed-ratio schedule, reinforcement comes after a predictable number of responses (e.g., every fifth lever press). While it increases response rates, it is not as effective for initially teaching a new behavior.

C. Reinforcing a behavior after an unpredictable number of responses

This is a variable-ratio schedule. Reinforcement happens after an unpredictable number of responses, such as in gambling or slot machines. This schedule creates high response rates and resistance to extinction but does not provide reinforcement for every behavior, unlike continuous reinforcement.

D. Reinforcing a behavior at varying time intervals regardless of the number of responses

This is a variable-interval schedule. Reinforcement is based on the passage of unpredictable amounts of time, not on each instance of the behavior. For example, checking your email and finding a new message at random times fits this schedule, but it does not reinforce every single behavior.

Correct Answer:

B. Extinction

Explanation:

Extinction occurs when the conditioned stimulus (CS) is repeatedly presented without the unconditioned stimulus (UCS), leading to a gradual weakening and eventual disappearance of the conditioned response (CR). For example, if Pavlov’s bell (CS) is rung but food (UCS) is no longer presented, the dog will eventually stop salivating (CR) to the bell. Extinction does not erase learning; it simply suppresses the conditioned response.

Why Other Options Are Wrong:

A. Acquisition

Acquisition is the initial learning stage where the CS and UCS are paired to form an association.

C. Generalization

Generalization occurs when stimuli similar to the conditioned stimulus also trigger the conditioned response.

D. Spontaneous recovery

Spontaneous recovery is when a previously extinguished conditioned response reappears after a pause, not the process of its decline.

Correct Answer:

B. Negative reinforcement removes an unpleasant stimulus to increase a behavior, while punishment decreases a behavior

Explanation:

Negative reinforcement and punishment are often confused, but they serve very different purposes. Negative reinforcement strengthens behavior by removing something unpleasant (e.g., fastening a seatbelt stops the car’s beeping, so seatbelt use increases). Punishment, on the other hand, always decreases a behavior. Punishment can be positive (adding an unpleasant stimulus, like scolding) or negative (removing a pleasant stimulus, like taking away a toy). Thus, reinforcement—positive or negative—always increases behavior, while punishment—positive or negative—always decreases it.

Why Other Options Are Wrong:

A. Negative reinforcement decreases a behavior, while punishment increases a behavior

This is the exact opposite of the correct definitions.

C. Negative reinforcement adds a pleasant stimulus to increase a behavior, while punishment removes a stimulus to increase a behavior

Adding a pleasant stimulus describes positive reinforcement, not negative reinforcement, and punishment never increases behavior.

D. Negative reinforcement and punishment are the same because both reduce unwanted behavior

This is incorrect—negative reinforcement increases a behavior, while punishment decreases it.

Correct Answer:

B. A student watches a tutorial video and then successfully fixes a bike chain

Explanation:

Observational learning occurs when individuals acquire new behaviors by watching others (models) and then imitating those behaviors. Unlike direct reinforcement, it relies on social influence and modeling. For example, a student who watches a YouTube tutorial and then applies the steps to fix a bike chain has learned through observation. Research suggests that mirror neurons help the brain simulate and replicate the observed behavior, facilitating imitation and skill learning.

Why Other Options Are Wrong:

A. A child receives candy every time they clean their room

This is operant conditioning with positive reinforcement, not observational learning. The child is reinforced directly rather than learning by watching others.

C. A worker increases productivity after receiving a paycheck every two weeks

This is a fixed-interval reinforcement schedule, not observational learning. It depends on time-based reinforcement, not modeling.

D. A gambler keeps playing slot machines because of unpredictable payouts

This is a variable-ratio reinforcement schedule, not observational learning. The persistence in gambling behavior is driven by unpredictably timed reinforcement, not imitation.

Correct Answer:

B. A behavior with its consequence, such as reinforcement or punishment

Explanation:

Operant conditioning, developed by B.F. Skinner, is a learning process where behaviors are influenced by their outcomes. If a behavior is followed by reinforcement, it is more likely to be repeated, whereas behaviors followed by punishment are less likely to recur. This principle highlights how organisms adapt their actions to maximize rewards and minimize negative outcomes, shaping future behavior.

Why Other Options Are Wrong:

A. A neutral stimulus with an unconditioned stimulus to produce a reflexive response

This describes classical conditioning, not operant conditioning.

C. Observed actions of others with imitated behaviors

This refers to observational learning, not operant conditioning.

D. A repeated stimulus with reduced responsiveness over time

This describes habituation, a form of non-associative learning, not operant conditioning.

Correct Answer:

B. A natural, unlearned reaction automatically triggered by a stimulus

Explanation:

The unconditioned response (UCR) is the automatic, natural reaction to an unconditioned stimulus (UCS). For example, salivation in response to food is a UCR—it requires no prior learning. The UCR is essential in classical conditioning because it is the reflexive behavior that becomes paired with a previously neutral stimulus, leading to the formation of a conditioned response (CR) after repeated associations.

Why Other Options Are Wrong:

A. A learned reaction to a neutral stimulus after repeated pairings

This describes a conditioned response (CR), not an unconditioned response.

C. A voluntary behavior strengthened through reinforcement

This belongs to operant conditioning, not classical conditioning.

D. A behavior weakened by repeated exposure to a non-reinforcing stimulus

This refers to habituation, not the UCR in classical conditioning.

Correct Answer:

B. Occurs as a result of experience

Explanation:

Learning is the process through which experience leads to a relatively permanent change in behavior or knowledge. Unlike innate behaviors such as reflexes or instincts, learned behaviors develop through interaction with the environment and practice. For example, a person may learn to play an instrument, solve math problems, or develop new habits because of repeated exposure and reinforcement. This definition emphasizes experience as the driving force of learning rather than genetic programming.

Why Other Options Are Wrong:

A. Is innate

Innate behaviors are biologically hardwired, such as reflexes and instincts, and do not require experience. They differ from learning.

C. Is found only in humans

Learning occurs in many species, not just humans. Animals also learn through conditioning, observation, and trial-and-error.

D. Occurs by observing others

This describes observational learning, which is one form of learning, but it is not the general definition of learning itself.