MCAT Psych/Soc Section

What's Inside the Guide

What the section is. The Psychological, Social, and Biological Foundations of Behavior (Psych/Soc) section tests your ability to solve and analyze problems by combining reasoning skills with foundational science. It focuses on how biological, psychological, and social factors shape perception and behavior — the human and social side of medicine that physicians need to serve a diverse population.

Format at a glance.

• 59 questions total — 44 passage-based, 15 discrete
• 95-minute time limit
• Content drawn from introductory Psychology (65%), Sociology (30%), and Biology (5%)

What you're tested on. Basic research methods and statistics, biology concepts tied to mental processes and behavior, and the material covered in first-semester psychology and sociology courses. The style mirrors the Bio/Biochem section: it rewards knowledge of facts and concepts over fast calculation, so you'll want fluency in psychology terminology, graph analysis, and how studies are designed.

Key prep takeaways. Every question is multiple-choice, but most require reading passages to extract the information you need. Memorizing and understanding precise definitions is one of the highest-leverage moves for this section.

Major topics covered in the Psych/Soc section:

• Sensation and perception: How sensory receptors detect stimuli, the pathways that carry signals to the brain, and the thresholds and theories (signal detection, Weber's law) that explain how we make sense of the environment.
• Research methods and statistics: Study designs, variables and controls, validity and reliability, and the descriptive and inferential stats you need to read graphs and evaluate experiments under time pressure.
• Learning and conditioning: Classical vs. operant conditioning, reinforcement and punishment schedules, and the observational and associative learning concepts the MCAT consistently tests.
• Memory and cognition: Encoding, storage, and retrieval, the stages and models of memory, and the problem-solving, decision-making, and bias concepts behind cognition questions.
• Motivation and emotion: The major theories of motivation and emotion (drive reduction, James-Lange, Cannon-Bard, Schachter-Singer), plus the physiological and social factors that drive behavior.
• Psychological disorders: How the major categories — mood, anxiety, psychotic, and personality disorders — are defined and distinguished, and the biological and social contributors behind them.
• Dissociative disorders: The four types (amnesia, fugue, depersonalization/derealization, and dissociative identity disorder), how to tell them apart, and how to distinguish them from look-alikes like schizophrenia, PTSD, and malingering.
• Attitudes and behavior change: How attitudes form and shift, the elaboration likelihood model, cognitive dissonance, and the persuasion concepts the section tests.
• Self-identity and self-concept: Identity formation, self-esteem and self-efficacy, and the major theories (Freud, Erikson, Kohlberg, Vygotsky) of how the self develops.
• Social thinking and interaction: Attribution theory, stereotypes and prejudice, conformity and obedience, and group dynamics like groupthink and the bystander effect.
• Social structure and institutions: The major theoretical frameworks (functionalism, conflict theory, symbolic interactionism) and the institutions — family, education, religion, medicine — that organize society.
• Demographics and social change: Population characteristics, demographic shifts, urbanization, migration, and the factors that drive social movements and change.
• Social stratification and inequality: Class, status, and power, the determinants of social and health inequality, and the concepts of social mobility and disparities the MCAT links to medicine

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