MCAT Attitudes and Behavior Change
MCAT Attitude and Behavior Change covers how attitudes form, how they predict behavior, and how people resolve the discomfort when beliefs and actions clash. The ABC model, cognitive dissonance, and the elaboration likelihood model are the core frameworks for this MCAT psychology topic, and they show up in both standalone questions and clinical vignettes.
A passage might describe a patient who keeps smoking despite knowing the risks, then ask you to identify which attitude component is involved or predict how dissonance resolves. The ELM gets tested by presenting a persuasion scenario and asking whether the resulting attitude change will be durable — students reviewing MCAT behavioral science topics need to know both processing routes cold.
The misconception that trips students up most here is Festinger's $1/$20 dissonance study — the group paid less showed stronger attitude change, which is the opposite of what most people expect. Students also consistently confuse habituation with sensory adaptation and extinction, since all three involve response reduction but operate at completely different levels of analysis. Getting those distinctions clean is what separates a strong MCAT psych score from an average one.
Components of Attitudes (ABC Model)
Affect, Behavior, and Cognition can point in different directions within a single attitude — the exam tests whether you catch that.
- Confuses behavioral intentions (B component) with actual past behavior
- Confuses cognitive beliefs with affective feelings in the ABC model
Elaboration Likelihood Model (Central vs Peripheral)
High motivation and personal relevance push people toward deep argument processing; low ability or relevance pushes them toward surface cues.
- Overgeneralizes peripheral route as always producing weak attitude change rather than focusing on the mechanism
- Inverts the relationship between audience motivation/ability and ELM route taken
Cognitive Dissonance Theory (Festinger)
Insufficient justification — not excess reward — drives the strongest attitude change, as Festinger's $1/$20 study demonstrated.
- Inverts the $1/$20 result, expecting larger reward to produce greater attitude change
- Assumes dissonance resolution always involves behavior change rather than attitude change or rationalization
Attitude-Behavior Consistency
Specific, accessible attitudes formed through direct experience best predict behavior; the Theory of Planned Behavior adds norms and perceived control.
- Assumes general attitudes reliably predict specific behaviors without accounting for specificity or accessibility
- Omits perceived behavioral control from the Theory of Planned Behavior
Habituation and Dishabituation
Repeated, non-aversive stimulation reduces responding at the CNS level — distinct from receptor-level adaptation and from extinction after conditioning.
- Conflates sensory adaptation (receptor-level) with habituation (CNS-level) based on their similar outcomes
- Confuses dishabituation (response recovery after novel stimulus) with sensitization (enhanced response from aversive priming)
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