Attitude and Behavior Change (AAMC 7C)
Content category 7C ties learning to attitudes: how experience changes behavior, and how attitudes and behavior change each other. Classical and operant conditioning are on the learning and memory page, and the ABC model and basic persuasion routes are on attitudes and social behavior. This page fills in the rest of 7C: non-associative learning, the brain mechanisms of learning, applied behavior modification, when attitudes do and do not predict behavior, the full elaboration likelihood model, and the health behavior change models that MCAT passages about patients and public health keep using.
Non-Associative Learning
Not all learning involves linking two events. In non-associative learning, repeated exposure to a single stimulus changes the response to it.
- Habituation
- A decrease in response to a repeated, harmless stimulus. You stop noticing the hum of a refrigerator.
- Dishabituation
- Recovery of a habituated response when a new stimulus is presented, or the original stimulus changes. If the hum suddenly stops, you notice it.
- Sensitization
- An increase in response to a stimulus after exposure to a strong or noxious stimulus. After a loud bang, you startle more at small noises.
Habituation is the basis of a common method for studying infants: infants look longer at novel stimuli, so researchers show a stimulus until looking time drops (habituation), then present a changed stimulus. If looking time rises again (dishabituation), the infant must have detected the difference.
The Brain Basis of Learning
Learning changes synapses. Long-term potentiation (LTP) is a lasting increase in synaptic strength after repeated, high-frequency stimulation, first described in the hippocampus. It depends on NMDA glutamate receptors, which open only when glutamate is bound and the postsynaptic cell is already depolarized, so they detect when two neurons are active together. The resulting calcium influx triggers the insertion of more AMPA receptors. This fits the principle often summarized as neurons that fire together wire together. The opposite process, long-term depression, weakens synapses.
Dopamine released from the ventral tegmental area to the nucleus accumbens and prefrontal cortex signals reward. Its firing tracks a reward prediction error: dopamine neurons fire more when a reward is better than expected, stay at baseline when it is fully predicted, and dip when an expected reward is omitted. This is why unpredictable reinforcement (variable schedules) is so effective, and why addictive drugs, which increase dopamine directly, can hijack reinforcement learning.
Learning depends on neuroplasticity, which is greatest in childhood but continues throughout life. Different memory systems rely on different structures: the hippocampus for new declarative memories, the cerebellum for classically conditioned motor responses such as the eyeblink, the basal ganglia for habits and procedural skills, and the amygdala for fear conditioning.
Applying Learning: Behavior Modification
Behavior therapies apply conditioning principles to change problem behavior directly, without needing insight into its origins.
| Technique | Principle | Example |
|---|---|---|
| Token economy | Operant: tokens (secondary reinforcers) are earned for target behaviors and exchanged for rewards | Psychiatric wards or classrooms rewarding self-care or attendance |
| Shaping | Operant: reinforcing successive approximations | Teaching a child with autism to speak, one sound at a time |
| Systematic desensitization | Classical: counterconditioning. The client learns relaxation, then is gradually exposed to a fear hierarchy while relaxed | Treating fear of flying from pictures of planes to actual flights |
| Flooding / exposure | Classical: extinction. Intense, prolonged exposure without escape until fear subsides | Treating a phobia with sustained exposure to the feared object |
| Aversive conditioning | Classical: pairing an unwanted behavior with an unpleasant stimulus | A drug that causes nausea when alcohol is consumed |
Cognitive behavioral therapy (CBT) combines these behavioral methods with identifying and challenging distorted thoughts. It has strong randomized-trial evidence for depression and anxiety disorders.
A therapist teaches a patient with a fear of needles deep muscle relaxation. Over several sessions, the patient imagines a needle on a table, then looks at a photo, then holds a capped syringe, staying relaxed at each step before moving on.
Relaxation paired with a graded fear hierarchy is systematic desensitization, a counterconditioning technique: a relaxed response replaces the fear response to the same stimulus. Flooding would involve immediate, intense exposure; aversive conditioning would add an unpleasant stimulus to reduce an approach behavior.
How Attitudes and Behavior Affect Each Other
When attitudes predict behavior
Attitudes often predict behavior poorly. In a classic field observation, restaurant owners almost always served a couple from a minority group in person but later said in writing that they would refuse service. Attitudes predict behavior better when:
- Specificity matches: an attitude toward exercising this week predicts exercising this week better than an attitude toward health in general.
- The attitude is strong and accessible, often because it comes from direct personal experience.
- Social pressures against acting on the attitude are weak.
- People are self-aware at the moment of acting.
When behavior changes attitudes
- Cognitive dissonance (Festinger)
- Discomfort from holding two inconsistent cognitions, or acting against an attitude. People reduce it by changing the attitude, changing the behavior, adding justifying cognitions, or trivializing the inconsistency. Dissonance is greatest when the behavior was freely chosen and insufficiently justified.
- Self-perception theory (Bem)
- When attitudes are weak or unclear, people infer them by observing their own behavior, as an outside observer would. No discomfort is required.
- Role-playing
- Acting out a role (a new job, a uniform) gradually shifts attitudes to match the role.
- Foot-in-the-door
- Agreeing to a small request makes a later, larger request more likely to be accepted, partly through self-perception (I am the kind of person who helps).
Participants did a boring task and were then paid either a small or a large amount to tell the next participant it was interesting. Those paid the small amount later rated the task as more enjoyable.
The large payment justified the lie, so no dissonance. The small payment did not, so the inconsistency between I said it was fun and it was boring was resolved by changing the attitude. A behaviorist prediction, that more reward means more positive attitude, gets the result backwards, which is what makes this study a favorite exam item.
Persuasion and the Elaboration Likelihood Model
The elaboration likelihood model (ELM) proposes that how a message persuades depends on how much the audience thinks about it (elaboration).
| Feature | Central route | Peripheral route |
|---|---|---|
| When used | High motivation (personal relevance, need for cognition) and high ability (time, knowledge, few distractions) | Low motivation or low ability |
| What persuades | Argument quality and evidence | Cues: source attractiveness, expertise signals, number of arguments, music, emotion |
| Resulting attitude | Durable, resistant to counterargument, predicts behavior | Temporary, easily changed, weaker link to behavior |
Persuasion research (the Yale communication approach) analyzes three groups of variables:
- Source: credibility (expertise and trustworthiness), attractiveness, similarity to the audience.
- Message: one-sided vs two-sided arguments (two-sided works better with informed or initially opposed audiences), fear appeals (effective when paired with clear, achievable actions that raise self-efficacy), repetition.
- Audience (target): prior knowledge, mood, age, need for cognition.
Models of Health Behavior Change
Several models explain why people do or do not adopt healthy behaviors. They are frequently the frame for MCAT passages about smoking cessation, vaccination, screening and medication adherence.
A person takes a health action when they believe that:
- they are susceptible to the condition (perceived susceptibility),
- the condition would be serious (perceived severity),
- the action would help (perceived benefits),
- the obstacles are manageable (perceived barriers: cost, pain, time),
- and something prompts them to act (cues to action, such as a reminder letter or a friend's diagnosis). Self-efficacy was added later.
Behavior is predicted by intention, which is shaped by three factors: attitude toward the behavior (do I think it is good?), subjective norms (do important others want me to?), and perceived behavioral control (can I actually do it?). Perceived behavioral control can also predict behavior directly. The gap between intention and action, called the intention-behavior gap, is a well-documented limitation.
| Stage | Description | Helpful intervention |
|---|---|---|
| Precontemplation | No intention to change in the foreseeable future; may not see a problem | Raise awareness of risks |
| Contemplation | Aware of the problem, considering change within about six months, ambivalent | Weigh pros and cons; motivational interviewing |
| Preparation | Intends to act soon, has taken small steps | Make a concrete plan, set a date |
| Action | Has changed behavior recently (under six months) | Reinforcement, support, coping skills |
| Maintenance | Sustained change for six months or more; works to prevent relapse | Relapse prevention |
Relapse is common and is treated as part of the process: people often cycle back to earlier stages before maintaining change. Social cognitive theory (Bandura) emphasizes self-efficacy, the belief that one can successfully perform the behavior, and reciprocal determinism among the person, behavior and environment.
Worked MCQs
5 MCQs in the style of the Psych/Soc section, several built around a study design.
Q1. A smoker tells her physician she knows smoking is harmful and has been thinking about quitting sometime in the next few months, but she is not ready to set a date. According to the transtheoretical model, she is in which stage?
She recognizes the problem and is considering change within about six months but has no concrete plan, which defines contemplation. Precontemplation involves no intention to change; preparation involves a plan and small steps toward acting soon.
Q2. Participants who are paid a small amount to argue publicly for a policy they oppose later report more support for it than participants paid a large amount. This is best explained by:
With little external justification, acting against one's attitude creates dissonance, reduced by shifting the attitude toward the behavior. A reinforcement account would predict that the larger payment produces more attitude change, the opposite of the result.
Q3. Infants are shown a picture of a cat repeatedly until their looking time decreases. When shown a picture of a dog, looking time increases. The increase demonstrates:
A renewed response to a changed stimulus after habituation is dishabituation, and it shows that the infants can tell the two categories apart. Spontaneous recovery refers to the return of an extinguished conditioned response after a rest period.
Q4. A public health campaign mails reminder postcards to people due for a colon cancer screening. In the health belief model, the postcard functions as:
Cues to action are triggers that prompt a person to act, such as reminders, symptoms or media messages. Perceived benefits concern whether the action would help, and subjective norms belong to the theory of planned behavior.
Q5. Viewers who are distracted while watching an ad are shown either strong or weak arguments for a product, delivered by a famous athlete. Which result does the elaboration likelihood model predict?
Distraction lowers the ability to elaborate, so viewers rely on peripheral cues like a celebrity endorser rather than argument quality. Peripheral-route attitudes tend to be temporary and weakly linked to behavior.
Quick Recap
- Habituation (response falls), dishabituation (recovers to a change), sensitization (response rises after a strong stimulus).
- LTP via NMDA receptors strengthens synapses; dopamine signals reward prediction error.
- Token economy and shaping are operant; systematic desensitization, flooding and aversive conditioning are classical.
- Attitudes predict behavior when specific, strong, accessible and free of social pressure.
- Dissonance: insufficient justification produces attitude change. Self-perception: infer attitudes from behavior.
- ELM: central route needs motivation and ability, gives durable change; peripheral route relies on cues, gives temporary change.
- Health belief model: susceptibility, severity, benefits, barriers, cues to action, self-efficacy.
- Theory of planned behavior: attitude, subjective norms, perceived control lead to intention. Stages of change: precontemplation to maintenance.