Psychology 101 Study Guide: 16 Topics + Practice Questions

Psychology 101 introduces you to the scientific study of the mind and behavior. Although it is an introductory course, students are often surprised by how much material it covers: research methods, the brain, learning, memory, human development, personality, social behavior, psychological disorders, and therapy may all appear during a single semester.

This Psychology 101 study guide gives you a clear overview of the most important topics, commonly confused concepts, and practice questions you can use to prepare for an exam.

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What do you learn in Psychology 101?

Psychology 101—also called Introduction to Psychology, Intro Psych, General Psychology, or PSY 101—is a broad survey of psychological science.

Most courses cover questions such as:

• How do psychologists study behavior scientifically?
• How do neurons, neurotransmitters, and brain structures affect behavior?
• How do people learn and remember information?
• How does personality develop?
• Why do people conform to groups?
• How are psychological disorders classified and treated?

The exact order varies by professor and textbook. This guide follows the 16 major subject areas covered by the BCcampus Psychology – H5P Edition, a textbook designed for a single-semester introductory psychology course.

Psychology 101 study guide at a glance

1. Introduction to psychology

Psychology is the scientific study of the mind and behavior. Early psychologists disagreed about what psychology should study and which methods it should use.

Important perspectives include:

• Structuralism: Studying the components of conscious experience.
• Functionalism: Studying how thoughts and behaviors help people adapt.
• Behaviorism: Focusing on observable behavior and learning.
• Psychodynamic psychology: Examining unconscious conflicts and motivations.
• Humanistic psychology: Emphasizing personal growth, choice, and meaning.
• Cognitive psychology: Studying thinking, memory, language, and decision-making.
• Biological psychology: Connecting behavior with the brain, nervous system, genetics, and hormones.

For an exam, know what makes each perspective different and be able to identify it in an example.

2. Psychological research

Psychology is not based only on opinions or personal experience. Psychologists use systematic research methods to investigate questions.

Key terms include:

• Hypothesis: A specific, testable prediction.
• Operational definition: A precise explanation of how a variable will be measured.
• Independent variable: The factor manipulated by the researcher.
• Dependent variable: The outcome being measured.
• Random assignment: Placing participants into groups by chance.
• Correlation: A relationship between two measured variables.
• Experiment: A method that can help establish cause and effect.

One of the most important rules in Psychology 101 is that correlation does not prove causation. Two variables can be related without one directly causing the other.

3. Biopsychology

Biopsychology examines how biological processes influence thought and behavior.

You should understand:

• The basic structure of a neuron
• How neurons communicate
• The role of neurotransmitters
• The central and peripheral nervous systems
• The sympathetic and parasympathetic nervous systems
• Major brain structures
• The endocrine system
• The interaction between genes and environment

Avoid memorizing brain structures as isolated vocabulary. Connect each structure with a function and a real-world example.

4. States of consciousness

Consciousness includes awareness of yourself and your environment. Psychology courses usually examine sleep, dreams, altered states, and psychoactive substances.

Important concepts include:

• Circadian rhythms
• Sleep stages
• REM and non-REM sleep
• Sleep deprivation
• Insomnia and other sleep disorders
• Psychoactive drugs
• Tolerance, dependence, and withdrawal
• Meditation and hypnosis

Be prepared to distinguish the different sleep stages and explain how substances affect the nervous system.

The first four textbook units cover psychology's foundations, research, biopsychology, and states of consciousness.

5. Sensation and perception

Sensation is the detection of physical stimuli by sensory receptors. Perception is the brain's organization and interpretation of that information.

For example, detecting wavelengths of light is sensation. Recognizing the object you see as a stop sign is perception.

Important topics include:

• Absolute threshold
• Difference threshold
• Sensory adaptation
• Signal detection
• Vision and hearing
• Depth perception
• Gestalt principles
• Top-down and bottom-up processing

This distinction appears frequently on introductory psychology exams.

6. Learning

Learning is a relatively lasting change in behavior or knowledge resulting from experience.

The three major forms are:

Classical conditioning: Learning an association between two stimuli. Pavlov's dogs learning to salivate after hearing a sound is the standard example.

Operant conditioning: Learning through consequences. Reinforcement makes behavior more likely, while punishment makes behavior less likely.

Observational learning: Learning by watching other people and observing the consequences of their behavior.

Remember that negative reinforcement is not punishment. Negative reinforcement increases a behavior by removing something unpleasant.

7. Thinking and intelligence

Cognition includes thinking, language, reasoning, judgment, and problem-solving.

Common topics include:

• Concepts and prototypes
• Algorithms and heuristics
• Confirmation bias
• Functional fixedness
• Language development
• Intelligence testing
• Reliability and validity
• Different theories of intelligence
• The influence of genes and environment

A heuristic can help someone reach a decision quickly, but it can also produce predictable errors.

8. Memory

Memory involves encoding, storing, and retrieving information.

Major concepts include:

• Sensory memory
• Short-term and working memory
• Long-term memory
• Explicit and implicit memory
• Semantic and episodic memory
• Retrieval cues
• Interference
• The misinformation effect
• Forgetting
• Memory reconstruction

Students often assume memory works like a video recording. In reality, retrieval can be incomplete and influenced by expectations, later information, and context.

The textbook's middle units address sensation and perception, learning, cognition, intelligence, and memory.

9. Lifespan development

Developmental psychology studies physical, cognitive, and social changes across the lifespan.

You may encounter:

• Nature and nurture
• Prenatal development
• Attachment
• Piaget's theory of cognitive development
• Erikson's psychosocial stages
• Moral development
• Adolescence
• Adulthood
• Aging
• Death and dying

Do not only memorize the stages. Practice identifying which stage or developmental issue is illustrated by a scenario.

10. Motivation and emotion

Motivation helps explain why behavior begins, continues, and stops. Emotion involves subjective experience, physiological arousal, and behavioral expression.

Important theories and concepts include:

• Instincts
• Drive-reduction theory
• Incentives
• Arousal
• Intrinsic and extrinsic motivation
• Hunger and eating behavior
• Theories of emotion
• The relationship between physiological arousal and emotional experience

Exam questions may describe a behavior and ask which motivational or emotional theory best explains it.

11. Personality

Personality refers to relatively consistent patterns of thought, emotion, and behavior.

Major approaches include:

• Psychodynamic theories
• Freud's id, ego, and superego
• Humanistic theories
• Social-cognitive theories
• Trait theories
• The Big Five personality traits
• Personality assessments

Focus on how the theories differ. A trait theorist describes stable characteristics, while a social-cognitive theorist emphasizes the interaction between people, behavior, and situations.

12. Social psychology

Social psychology studies how people's thoughts, feelings, and actions are influenced by other people.

Common subjects include:

• Attribution
• The fundamental attribution error
• Attitudes and persuasion
• Conformity
• Compliance
• Obedience
• Group behavior
• Prejudice and discrimination
• Aggression
• Attraction
• Altruism and helping

Application is especially important here. You should be able to recognize these principles in everyday situations rather than only reciting definitions.

13. Industrial-organizational psychology

Industrial-organizational psychology applies psychological principles to work.

Topics may include:

• Employee selection
• Performance evaluation
• Training
• Motivation at work
• Leadership
• Organizational culture
• Job satisfaction
• Human factors and workplace design

Some professors spend less time on this unit, so check your syllabus before deciding how heavily to study it.

14. Stress, lifestyle, and health

Health psychology examines how behavior, thoughts, emotions, and social conditions affect physical health.

Important concepts include:

• Stressors
• Physiological stress responses
• Cognitive appraisal
• Acute and chronic stress
• Problem-focused coping
• Emotion-focused coping
• Social support
• Health behaviors

A major idea is that stress is influenced both by an event and by how the person interprets and responds to it.

15. Psychological disorders

Psychological disorders involve clinically significant disturbances in thought, emotion, or behavior. Psychology 101 provides an educational overview rather than training students to diagnose themselves or other people.

Courses commonly discuss:

• Anxiety disorders
• Obsessive-compulsive and related disorders
• Trauma-related disorders
• Depressive disorders
• Bipolar disorders
• Schizophrenia
• Dissociative disorders
• Personality disorders
• Neurodevelopmental disorders

For exams, study defining characteristics, broad explanatory perspectives, and distinctions among similar conditions.

16. Therapy and treatment

The final part of many Psychology 101 courses introduces mental-health treatment.

Common approaches include:

• Psychodynamic therapy
• Humanistic and person-centered therapy
• Behavioral therapy
• Cognitive therapy
• Cognitive behavioral therapy
• Group and family therapy
• Medication and other biological treatments
• Community and sociocultural approaches

Treatment decisions are made by qualified professionals based on the individual, the condition, available evidence, and other relevant circumstances.

The remaining textbook units cover development, emotion and motivation, personality, social and workplace psychology, health, psychological disorders, and treatment.

Five concepts Psychology 101 students commonly confuse

Correlation versus causation

A correlation means two variables change together. Causation means a change in one variable produces a change in another.

If students who sleep more receive higher grades, that does not automatically prove sleep caused the higher grades. Other variables may be involved.

Classical versus operant conditioning

Classical conditioning associates two stimuli and often involves an automatic response.

Operant conditioning connects a voluntary behavior with a consequence.

Negative reinforcement versus punishment

Negative reinforcement increases a behavior by removing something unpleasant.

Punishment decreases a behavior.

The words "positive" and "negative" refer to adding or removing something—not whether the consequence is good or bad.

Sensation versus perception

Sensation is detection. Perception is interpretation.

Your eyes detecting light is sensation. Your brain recognizing a friend's face is perception.

Reliability versus validity

Reliability means a measurement produces consistent results.

Validity means the measurement assesses what it claims to assess.

A test can be reliable without being valid.

Still confused? Ask the Psychology 101 tutor to compare any two concepts using a real-life example.

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Psychology 101 practice questions

1. A researcher defines stress as a participant's score on a 20-item questionnaire. What is this an example of?

A. Random assignment B. An operational definition C. A placebo D. Naturalistic observation

Answer: B. The researcher has specified exactly how stress will be measured.

2. Researchers find that students who attend more classes generally earn higher grades. What can they conclude?

A. Attendance definitely causes higher grades B. Higher grades cause attendance C. Attendance and grades are correlated D. The two variables are unrelated

Answer: C. A correlation identifies a relationship but does not by itself establish causation.

3. A student begins feeling anxious whenever they hear the notification sound associated with messages from a demanding supervisor. This is most similar to:

A. Classical conditioning B. Operant conditioning C. Latent learning D. Insight learning

Answer: A. The notification sound has become associated with an anxiety-producing experience.

4. Fastening a seat belt causes an irritating warning sound to stop. As a result, the driver fastens the seat belt more frequently. This is:

A. Positive punishment B. Negative punishment C. Positive reinforcement D. Negative reinforcement

Answer: D. Removing the unpleasant sound increases the seat-belt behavior.

5. Which process involves getting information into memory?

A. Retrieval B. Encoding C. Extinction D. Perception

Answer: B. Encoding is the process through which information enters a memory system.

6. A person blames a stranger's rude behavior on their personality while ignoring the stressful situation the stranger is experiencing. This best illustrates:

A. The fundamental attribution error B. Sensory adaptation C. Random sampling D. Cognitive dissonance

Answer: A. The person is overemphasizing an internal explanation and underestimating the situation.

7. Which statement best distinguishes sensation from perception?

A. Sensation requires learning, while perception does not B. Sensation detects stimuli, while perception interprets them C. Sensation occurs only in the brain D. Perception occurs before sensation

Answer: B. Sensory systems detect information, which the brain then organizes and interprets.

8. A personality test produces almost identical results each time a person takes it. This primarily demonstrates:

A. Validity B. Reliability C. Randomization D. Generalization

Answer: B. Consistency across repeated measurements is reliability.

9. A researcher changes the amount of sleep participants receive and then measures their memory performance. What is the dependent variable?

A. Amount of sleep B. Memory performance C. The research hypothesis D. Participant age

Answer: B. Memory performance is the outcome being measured.

10. Why is random assignment used in an experiment?

A. To guarantee that the sample represents the entire population B. To eliminate the dependent variable C. To make experimental groups more comparable before the treatment D. To prove the hypothesis is correct

Answer: C. Random assignment helps distribute preexisting participant differences across the groups.

How to use the Psychology 101 AI tutor

Instead of searching through hundreds of textbook pages, ask the tutor a focused question.

Try prompts such as:

• "Explain classical and operant conditioning using college dorm examples."
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• "Create a study guide focused on the concepts most likely to be confused."
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• "Turn the personality unit into a comparison chart."

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Use the tutor to understand and practice the material. Follow your professor's academic-integrity rules, and do not submit generated answers as your own work.

How to study for a Psychology 101 exam

Begin by checking your syllabus, lecture slides, assigned chapters, and any study guide provided by your instructor. Psychology 101 courses do not all emphasize the same material.

For each assigned topic:

1. Write a one-sentence definition in your own words.
2. Create a real-life example.
3. Compare it with the most similar concept.
4. Answer an application question without looking at your notes.
5. Review incorrect answers again after a delay.

This approach prepares you for exams that require both vocabulary knowledge and conceptual application. It combines active recall and spaced repetition—the two study techniques with the strongest evidence behind them.

If your professor records lectures, you can also chat with your lecture recordings to review exactly what was said in class.

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Textbook attribution

Psychology – H5P Edition by Rose Spielman, Kathryn Dumper, William Jenkins, Arlene Lacombe, Marilyn Lovett, and Marion Perlmutter is used under a CC BY 4.0 licence.

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