Psychology is the scientific study of behavior and mental processes.
Critical Thinking: Involves evaluating information and arguments to make informed decisions, minimizing biases and misconceptions.
Wilhelm Wundt: Often referred to as the father of psychology, founded the first psychological laboratory.
Contemporary Approaches
Biological/Neuroscience: Focuses on physiological and genetic influences on behavior.
Behavioral: Examines observable behaviors and the ways they're learned.
Psychodynamic: Emphasizes unconscious motivations and early childhood experiences.
Humanistic: Concentrates on personal growth and the concept of self-actualization.
Cognitive: Studies internal mental processes such as perception, thinking, and problem-solving.
Sociocultural: Investigates how cultural and social contexts shape behaviors and beliefs.
Biopsychosocial: Integrates biological, psychological, and social factors in understanding mental health.
Culture
Definition: A system of shared beliefs, values, customs, and behaviors that shape a group's way of life.
Examples: Language, traditions, art, and social norms.
Research Definitions
Theory vs. Hypothesis: A theory is a broad explanation while a hypothesis is a testable prediction derived from a theory.
Descriptive Research: Involves observing and describing behavior without manipulating variables. Types include case studies, surveys, and observational research.
Case Study: Detailed analysis of a single individual or event; e.g., studying the life of a famous psychologist.
Correlational Research: Assesses relationships between variables but cannot establish causation.
Correlation Coefficient: Ranges from -1 to +1; indicates direction (positive or negative) and strength of the association.
Causation Note: Correlation does not equal causation; other factors may influence relationships.
Experimental Research
Definitions: Experiment tests a hypothesis by manipulating variables.
Random Assignment: Participants are randomly assigned to groups to minimize bias.
Variables:
Independent Variable: The factor manipulated by the researcher.
Dependent Variable: The outcome measured that may change due to the independent variable.
Experimental vs. Control Group: The experimental group receives the treatment, while the control group does not for comparison.
Chapter 2: The Brain and Behavior
Plasticity: The brain's ability to change and adapt; more pronounced during development or after injury.
Divisions of the Nervous System:
Central Nervous System (CNS): Consists of the brain and spinal cord.
Peripheral Nervous System (PNS): Connects the CNS to the rest of the body; includes somatic and autonomic systems.
Autonomic Nervous System: Regulates involuntary functions; subdivided into sympathetic (fight-or-flight) and parasympathetic (rest-and-digest).
Stress and Stressors: Stress is the body's reaction to challenges; stressors are triggering stimuli.
Neurons and Neurotransmitters: Neurons transmit information; neurotransmitters like dopamine and serotonin influence mood and behavior.
Dopamine: Involved in pleasure and reward; too much can lead to schizophrenia, too little linked to Parkinson's.
Serotonin: Regulates mood; low levels associated with depression.
Structures of the Brain:
Limbic System: Emotions and memory; includes the amygdala (fear response) and hippocampus (memory formation).
Cerebral Cortex: Higher brain functions; divided into four lobes (frontal, parietal, temporal, occipital).
Somatosensory Cortex: Processes sensory input; Motor Cortex: Controls voluntary movement.
Corpus Callosum: Connects brain hemispheres for communication.
Chapter 3: Sensation and Perception
Difference:
Sensation: Detection of physical energy from the environment.
Perception: Interpretation of sensory input.
Bottom-up Processing: Starts with sensory input; e.g., identifying an object based on its features.
Top-down Processing: Uses context and prior knowledge; e.g., reading jumbled letters in a sentence.
Selective Attention: Focusing on specific stimuli while ignoring others; e.g., concentrating on a conversation in a noisy room.
Sensory Adaptation: Decreased sensitivity to constant stimuli; e.g., not noticing a strong smell after being exposed to it for a while.
Perceptual Constancy: Recognizing objects as constant despite changes in sensory input; includes size, shape, and color constancy.
Chapter 4: States of Consciousness
Consciousness: Awareness of self and environment; includes controlled and automatic processes.
Circadian Rhythms: Biological clock influencing sleep-wake cycles; typically impacts performance and wellness.
Sleep Stages:
Non-REM Stages: Stage 1 (light sleep), Stage 2 (sleep spindles), Stage 3/4 (deep sleep).
REM Stage: Features increased brain activity, dreaming occurs here.
Sleep Disorders:
Insomnia: Difficulty falling/staying asleep.
Narcolepsy: Sudden sleep attacks.
Sleep Apnea: Breathing interruptions during sleep.
Drug Effects:
Depressants: Slow CNS activity; e.g., alcohol, benzodiazepines.
Stimulants: Increase CNS activity; e.g., caffeine, amphetamines.
Hallucinogens: Alter perceptions; e.g., LSD, psilocybin.
Meditation: A practice for focused attention, reducing stress and enhancing well-being.
Chapter 5: Learning
Learning: A relatively permanent change in behavior due to experience.
Types of Learning:
Behaviorism: Focuses on observable behavior.
Observational Learning: Learning by watching others.
Classical Conditioning: Associative learning; key concepts include:
Unconditioned Stimulus (US), Unconditioned Response (UR), Neutral Stimulus (NS), Conditioned Stimulus (CS), Conditioned Response (CR).
Operant Conditioning: Learning through consequences; includes reinforcement (positive vs. negative) and punishment (positive vs. negative).
Shaping: Gradual reinforcement of behaviors closer to the desired behavior.
Chapter 6: Memory
Memory Definition: The process of encoding, storing, and retrieving information.
Encoding: Transforming information into a form suitable for storage; levels of processing affect outcomes.
Storage: Maintaining information; includes sensory, short-term, and long-term memory.
Short-term Memory: Holds information temporarily; chunking improves capacity.
Long-term Memory: More permanent storage; includes sematic, episodic, and procedural memory.
Retrieval: Getting info out of memory; includes serial position effect (primacy and recency effects).
Chapter 7: Thinking, Intelligence, and Language
Cognition: Mental processes like thinking, problem-solving, and decision-making.
Problem Solving: The process of finding solutions; contrasts with reasoning and decision-making.
Confirmation Bias: Tendency to favor information that confirms existing beliefs.
Intelligence: Defined as the ability to adapt to new situations; can be measured through various assessments.
Validity & Reliability: Concepts critical to assessment quality; validity refers to accuracy, while reliability refers to consistency.
Normal Distribution: A statistical function that represents the distribution of many types of data.
Chapter 8: Human Development
Development: Refers to the psychological growth and maturation process.
Nature and Nurture: Addresses the influences of genetics vs. environmental factors on behavior.
Resilience: Ability to adapt and recover from difficult experiences.
Chapter 9: Motivation and Emotion
Motivation Definition: Process that initiates, guides, and maintains goal-oriented behaviors.
Drive Reduction Theory: Suggests behavior is motivated by the need to reduce drives.
Hierarchy of Needs: Maslow’s model outlining the stages of human motivation from basic needs to self-actualization.
Intrinsic vs. Extrinsic Motivation: Differentiates between motivation from internal factors versus external rewards.
Chapter 10: Personality
Personality Definition: Unique patterns of thoughts, feelings, and behaviors.
Perspectives on Personality: Include psychodynamic, humanistic, trait, and social-cognitive theories.
Big Five Model: Traits include Openness, Conscientiousness, Extraversion, Agreeableness, and Neuroticism (OCEAN model).
Chapter 11: Social Psychology
Social Psychology Definition: Studies how people influence and are influenced by others.
Bystander Effect: Phenomenon where individuals are less likely to offer help when others are present.
Attribution Theory: Explains how we assign causes to behavior; includes fundamental attribution error.
Cognitive Dissonance: Discomfort from holding contradictory beliefs; resolved through various means, such as changing beliefs.
Chapter 12: Psychological Disorders
Criteria for Abnormal Behavior: Deviance, maladaptiveness, and personal distress.
DSM-5: Diagnostic manual for mental disorders, providing criteria for screening.
Chapter 13: Therapies
Clinical Psychology and Psychotherapy: Understanding mental health issues and therapeutic techniques employed.
Types of Therapy: Each approach (e.g., psychodynamic, humanistic, cognitive-behavioral) provides specific methods for treatment.
Biological Therapies: Involve medication for various disorders.
Chapter 14: Health Psychology
Health Psychology Definition: Explores how psychological factors influence health, illness, and healthcare.
Stages of Change Model: Outlines precontemplation, contemplation, preparation, action, and maintenance stages.
General Adaptation Syndrome: Stages of stress response—alarm, resistance, exhaustion.
Health Disparities: Differences in health outcomes across various demographics due to a range of factors including socioeconomic status.
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