PSCH 100 Midterm Lock-In Packet Vocabulary Flashcards

Packet Usage Instructions and Study Lock-In Schedule

• Study Packet Methodology:

  • Do not repeatedly reread the packet.
  • For every bold term, cover the definition and recite it aloud from memory.
  • Mark each term according to retrieval accuracy:
    • Green: Correct response.
    • Yellow: Partly correct response.
    • Red: Incorrect response.
  • Spaced Repetition Protocol: Repeat red terms after $10\,\text{minutes}$ and again the following day.
  • Written Questions Protocol: Focus on remembering the bold cue words, then explain the core concept naturally.

• Lock-In Study Schedule (Preparation for Tuesday Exam):

  • First Session ($60$ to $75\,\text{minutes}$):
    • Review Chapter 1 memory anchors and terms ($20\,\text{minutes}$).
    • Cover definitions and retrieve them aloud ($15\,\text{minutes}$).
    • Answer Chapter 1 written questions using cue words ($20\,\text{minutes}$).
    • Revisit only missed items ($10\,\text{minutes}$).
  • Second Session ($75$ to $90\,\text{minutes}$):
    • Draw one neuron from memory and label the dendrites, soma, axon, myelin sheath, axon terminals, and synapse.
    • Draw the organizational divisions of the nervous system from memory.
    • Create a four-lobe brain chart and integrate the thalamus, hypothalamus, hippocampus, and amygdala.
    • Explain all Chapter 2 written questions aloud.
  • Third Session ($75$ to $90\,\text{minutes}$):
    • Draw Jean Piaget's four developmental stages on a timeline.
    • Construct a $2 \times 2$ parenting-style grid organized by warmth and control dimensions.
    • Compare cross-sectional and longitudinal research designs.
    • Explain all Chapter 5 written questions aloud.
  • Monday Night Session ($45$ to $60\,\text{minutes}$):
    • Complete the Active-Recall Check closed-note.
    • Review only missed concepts, then retake those specific missed questions.
    • Cease studying early enough to sleep normally, as memory consolidation depends on adequate sleep.
  • Tuesday Pre-Exam Session ($20$ to $30\,\text{minutes}$):
    • Review memory anchors, brain structures, Piaget's developmental stages, parenting styles, and starred weak points.
    • Do not attempt a full reread of material immediately before the test.

Chapter 1: Psychology and Research Terms and Written Questions

• Key Terminology & Definitions:

  • Statistics: Methods used to collect, organize, analyze, and interpret numerical data.
  • Psychology: Scientific study of behavior and mental processes.
  • Empiricism / Empirical Approach: Building knowledge through observation, measurement, and evidence.
  • Critical Thinking: Examining assumptions, evaluating evidence, considering alternatives, and avoiding unsupported conclusions.
  • Theory: Organized explanation that predicts behaviors or events.
  • Hypothesis: Specific, testable prediction derived from a theory.
  • Operational Definition: Exact description of how a variable is measured or manipulated.
  • Replication: Repeating a study to see whether its result occurs again.
  • Peer Review: Experts evaluate research before publication.
  • Preregistration: Researchers publicly record their hypotheses and methods before collecting or analyzing data.
  • Meta-analysis: Statistical combination of results from many studies to estimate an overall effect.
  • Basic Research: Research aimed at increasing knowledge.
  • Applied Research: Research aimed at solving practical problems.
  • Naturalistic Observation: Observing behavior in its normal setting without manipulating it.
  • Case Study: Detailed examination of one person or a small group.
  • Survey: Collecting self-reported information by asking questions.
  • Population: Entire group a researcher wants to understand.
  • Random Sample: Sample selected so each population member has an equal chance of inclusion; improves representativeness.
  • Correlation: Degree to which two variables change together; it does not prove causation.
  • Correlation Coefficient: Number from $-1.00$ to $+1.00$ showing a correlation's direction and strength. The sign gives direction; distance from zero gives strength.
  • Scatterplot: Graph of paired scores used to display a correlation.
  • Illusory Correlation: Perceiving a relationship that is absent or weaker than believed.
  • Regression to the Mean: An unusually extreme result is often followed by a result closer to average.
  • Experiment: Method in which a researcher manipulates a variable and controls other factors to test causation.
  • Variable: Any factor that can change or take different values.
  • Experimental Group: Group receiving the treatment or manipulation.
  • Control Group: Comparison group that does not receive the treatment or receives a placebo.
  • Independent Variable: Factor the researcher manipulates.
  • Dependent Variable: Outcome the researcher measures.
  • Random Assignment: Placing participants into groups by chance; helps make groups similar and supports causal conclusions.
  • Placebo: Inactive treatment made to resemble the real treatment.
  • Informed Consent: Participants receive enough information to voluntarily agree to a study.
  • Debriefing: Explanation after a study of its purpose, procedures, and any deception.
  • Descriptive Statistics: Numbers that organize and summarize observed data.
  • Inferential Statistics: Methods used to draw conclusions about a population from sample data.
  • Mode: Most frequent score.
  • Median: Middle score after values are ordered.
  • Range: Highest score minus lowest score.
  • Standard Deviation: Measure of how spread out scores are around the mean.
  • Normal Curve: Symmetrical, bell-shaped distribution in which most scores cluster near the mean.
  • Statistical Significance: Evidence that a result would be unlikely if there were truly no effect; it does not automatically mean the effect is large or important.
  • Hindsight Bias: After learning an outcome, believing you knew it all along.
  • Testing Effect: Long-term memory improves when information is actively retrieved instead of only reread.
  • SQ3R: Study method: Survey, Question, Read, Retrieve/Recite, Review.
  • Levels of Analysis: Examining behavior from biological, psychological, and social-cultural viewpoints.
  • Biopsychosocial Approach: Explains behavior through interacting biological, psychological, and social-cultural influences.
  • Nature-Nurture Debate: Question of how genes and experience jointly influence traits and behavior.
  • Natural Selection: Inherited traits that improve survival or reproduction become more common across generations.
  • Culture: Shared ideas, behaviors, values, and traditions passed across generations.
  • Behavior Genetics: Study of how genes and environment influence individual differences.
  • Evolutionary Psychology: Study of how natural selection may have shaped behavior and mental processes.
  • Cognitive Psychology: Study of thinking, memory, language, perception, and problem solving.
  • Cognitive Neuroscience: Study of brain activity underlying cognition.
  • Clinical Psychology: Assessment and treatment of mental, emotional, and behavioral disorders, plus research.
  • Counseling Psychology: Helps people manage life changes and less severe emotional or personal difficulties.
  • Psychiatry: Medical specialty that diagnoses and treats mental disorders; psychiatrists are physicians and can prescribe medication.
  • Positive Psychology: Scientific study of strengths, well-being, and human flourishing.
  • Structuralism: Early approach using introspection to identify the basic elements of conscious experience.
  • Functionalism: Early approach studying how thoughts and behaviors help organisms adapt.
  • Behaviorism: Approach emphasizing observable behavior and learning.
  • Humanistic Psychology: Approach emphasizing free will, personal growth, meaning, and human potential.

• High-Scoring Written Answers:

  • Question 1: How is psychology a science?
    • Psychology functions as a science because it uses the scientific method: researchers form testable hypotheses, operationally define variables, collect observable empirical data, analyze results using statistics, and subject findings to peer review and replication. Conclusions are strictly grounded in empirical evidence rather than intuition or speculation.
  • Question 2: What does it mean when two variables are correlated?
    • It means they vary together in a predictable pattern. A positive correlation indicates variables move in the same direction, whereas a negative correlation indicates they move in opposite directions. Correlation demonstrates predictive utility but does not establish causation because reverse directionality and unmeasured third variables remain plausible explanations.
  • Question 3: Explain 2-3 subfields of psychology.
    • Cognitive psychology investigates mental processes such as thinking, memory, and problem-solving. Biological psychology examines the structural and physiological connections between brain processes and behavior. Clinical psychology focuses on assessing, diagnosing, and treating mental, emotional, and behavioral disorders. Each subfield applies scientific methods to mental processes and behavior, differing primarily in core research questions and practical applications.
  • Question 4: What is required for critical thinking?
    • Critical thinking requires questioning underlying assumptions, rigorously evaluating evidence and sources, identifying potential biases, formulating alternative explanations, and accepting conclusions only when supported by evidence. It protects against reliance on intuition, misinformation, and faulty causal claims.
  • Question 5: What are the major historical movements in psychology?
    • Structuralism sought to identify the structural components of consciousness via introspection. Functionalism examined how behavioral and cognitive processes enable organisms to adapt to environments. Behaviorism shifted focus exclusively to observable, learned behavior. Humanistic psychology highlighted human growth, potential, and free will. Cognitive psychology restored scientific focus to internal mental processes. Modern psychology integrates these views into biological, cognitive, behavioral, evolutionary, and social-cultural frameworks.
  • Question 6: How do illusory correlations form and influence judgment?
    • Illusory correlations occur when people perceive a relationship between variables where none exists or exaggerate a weak relationship. Driven by selective attention and memorable coincidences, individuals notice confirming occurrences and ignore contradictory evidence, leading to mistaken everyday judgments, superstitions, and social stereotypes.
  • Question 7: How does the biopsychosocial model improve psychological explanations?
    • The biopsychosocial model prevents single-cause oversimplifications by examining biological factors (such as genetic predispositions and brain mechanics), psychological factors (such as cognitive beliefs and emotional responses), and social-cultural factors (such as cultural norms and interpersonal relationships). Analyzing how these levels interact produces comprehensive explanations and diverse intervention options.
  • Question 8: How do researchers establish cause-and-effect relationships?
    • Researchers conduct controlled experiments where they manipulate an independent variable, measure a dependent variable, utilize random assignment to distribute individual differences equally across conditions, and hold extraneous variables constant. If systematic differences occur between groups following manipulation, the independent variable is identified as the causal agent.
  • Question 9: Why do psychologists study animals, and what ethical rules apply?
    • Animal research is conducted because animals share fundamental biological and learning processes with humans, enabling investigations that would be unethical to perform on humans. Ethically, researchers must justify scientific benefits, minimize pain and distress, provide humane housing, and comply with institutional oversight. Critics evaluate whether benefits outweigh harm and question the extent to which animal findings generalize to human populations.
  • Question 10: What are key structural features of experimental design?
    • Core features include a testable hypothesis, a manipulated independent variable, a measured dependent variable, experimental and control conditions, random assignment, standardized protocols, and precise control over confounding variables. Together, these features permit valid causal inferences.
  • Question 11: Why are different measures of central tendency necessary?
    • The mean incorporates every data point but is highly vulnerable to extreme outliers. The median is resistant to extreme scores, making it ideal for skewed distributions. The mode identifies the most frequent value and applies to categorical data. Selection of a measure depends on which metric represents the data distribution most accurately.

• Chapter 1 Memory Anchors:

  • Correlation predicts; experiment explains cause.
  • Random sample = who participates; random assignment = which group.
  • Independent Variable (IV) is changed; Dependent Variable (DV) is measured.
  • Sign = correlation direction; absolute size = strength.

Chapter 2: Biology, Neurons, and the Brain Terms and Written Questions

• Key Terminology & Definitions:

  • Biological Psychologists: Study links between biological processes and behavior or mental processes.
  • Neuron: Nerve cell that receives, processes, and transmits information.
  • Cell Body (Soma): Contains the nucleus and maintains the neuron.
  • Dendrites: Branches that receive incoming messages.
  • Axon: Fiber that carries impulses away from the cell body.
  • Myelin: Fatty sheath insulating the axon and speeding neural transmission.
  • Glial Cells: Cells that support, nourish, protect, and help neurons communicate.
  • Action Potential: Brief electrical impulse traveling down an axon.
  • Threshold: Minimum stimulation needed to trigger an action potential.
  • All-or-None Response: A neuron fires completely once threshold is reached or does not fire; stronger stimulation changes firing rate, not impulse size.
  • Refractory Period: Brief recovery time after firing when another action potential is difficult or impossible.
  • Synapse: Tiny junction between a sending neuron and receiving cell.
  • Neurotransmitters: Chemical messengers released into a synapse.
  • Reuptake: Reabsorption of neurotransmitters by the sending neuron.
  • Endorphins: Natural neurotransmitters involved in pain relief and pleasure.
  • Agonist: Substance that increases a neurotransmitter's action by mimicking it or enhancing its effect.
  • Antagonist: Substance that decreases a neurotransmitter's action by blocking it.
  • Nervous System: Body's electrochemical communication network.
  • Central Nervous System (CNS): Brain and spinal cord.
  • Spinal Cord: Connects brain and body and coordinates simple reflexes.
  • Sensory Neurons: Carry information from receptors toward the CNS.
  • Motor Neurons: Carry commands from the CNS to muscles and glands.
  • Interneurons: CNS neurons that process information and connect other neurons.
  • Somatic Nervous System: Controls voluntary skeletal muscles and carries sensory information.
  • Autonomic Nervous System: Controls glands and internal organs.
  • Sympathetic Nervous System: Arouses the body and mobilizes energy for action.
  • Parasympathetic Nervous System: Calms the body and conserves energy.
  • Reflex: Rapid, automatic response often coordinated by the spinal cord.
  • Hormones: Chemical messengers released by endocrine glands and carried in blood; slower but longer-lasting than neural messages.
  • Endocrine System: Glands that secrete hormones regulating growth, metabolism, stress, reproduction, and other functions.
  • Pituitary Gland: Endocrine “master gland,” directed by the hypothalamus, that influences growth and other glands.
  • Adrenal Glands: Glands above the kidneys that release stress-related hormones such as epinephrine and cortisol.
  • Hindbrain: Evolutionarily older region supporting survival functions; includes medulla, pons, and cerebellum.
  • Medulla: Controls heartbeat and breathing.
  • Cerebellum: Coordinates balance, voluntary movement, and procedural learning.
  • Midbrain: Helps coordinate movement, arousal, and orientation to sights and sounds.
  • Reticular Formation: Brainstem network involved in arousal and alertness.
  • Forebrain: Largest, most complex region; supports emotion, motivation, sensory processing, thought, and voluntary action.
  • Thalamus: Sensory relay station sending most incoming sensory information to the cortex; smell is the major exception.
  • Hypothalamus: Maintains homeostasis and regulates hunger, thirst, temperature, motivation, reward, and endocrine activity.
  • Limbic System: Network involved in emotion, motivation, and memory; commonly includes amygdala, hippocampus, and hypothalamus.
  • Amygdala: Processes emotional significance, especially fear and threat.
  • Hippocampus: Forms and consolidates new explicit memories and supports spatial memory.
  • Cerebral Cortex: Thin outer layer of the cerebrum responsible for complex perception, thought, language, and voluntary action.
  • Frontal Lobe: Planning, judgment, personality, speaking, and voluntary movement.
  • Prefrontal Cortex: Front portion of frontal lobes supporting executive control, decision-making, planning, and impulse regulation.
  • Parietal Lobe: Processes touch and body position and supports spatial processing.
  • Occipital Lobe: Processes vision.
  • Temporal Lobe: Processes hearing, language, and aspects of memory.
  • Motor Cortex: Frontal-lobe area controlling voluntary movements.
  • Somatosensory Cortex: Parietal-lobe area processing touch and body sensations.
  • Association Cortex: Cortical areas not devoted to primary sensory or motor functions; support learning, memory, language, and thought.
  • Corpus Callosum: Large band of fibers connecting the cerebral hemispheres.
  • Split Brains: Condition after corpus callosum disconnection, allowing each hemisphere to process some information independently.
  • Neuroplasticity: Brain's ability to change by reorganizing connections through experience, learning, or injury.
  • Neurogenesis: Formation of new neurons.
  • MRI: Uses magnetic fields to produce detailed images of brain structure.
  • fMRI: Tracks blood-oxygen changes to show both brain structure and areas active during tasks.
  • Phrenology: Discredited belief that skull bumps reveal mental traits; historically important for promoting the idea of localized brain functions.

• High-Scoring Written Answers:

  • Question 1: Explain step-by-step how nerve cells communicate.
    • Dendrites receive chemical signals from adjacent cells, which are integrated at the soma. When total incoming stimulation crosses the threshold, an electrical action potential is triggered down the axon. Upon reaching the axon terminal branches, neurotransmitters are released into the synaptic gap. These chemical messengers bind to specific receptor sites on the postsynaptic cell, after which they undergo reuptake, enzymatic degradation, or physical diffusion.
  • Question 2: What is the brain/tool analogy, and what are its limits?
    • A tool's operational function cannot be determined strictly by inspecting its physical material; similarly, brain structures must be understood by their behavioral functions and network interactions. While specific brain regions specialize in dedicated tasks, complex behaviors rely on interconnected neural networks rather than isolated structures.
  • Question 3: Define neuroplasticity and its developmental timeframe.
    • Neuroplasticity is the brain's structural and functional capacity to reorganize its neural pathways and connections in response to environmental input, learning, experience, or physical trauma. Although neuroplasticity peaks during early childhood, it persists across the entire lifespan.
  • Question 4: What are possible functional outcomes following brain damage?
    • Damage may cause functional deficits, but remaining neural regions can partially reorganize to compensate for lost capabilities, or individuals may learn compensatory behavioral strategies. Recovery outcomes depend on injury location, severity, patient age, and rehabilitation access.
  • Question 5: Describe the core structures and functions of the brainstem.
    • The medulla regulates vital physiological survival functions including heart rate and respiration. The pons coordinates voluntary movements and modulates sleep and physiological arousal. The reticular formation extends through the brainstem to control arousal and sustained attention. The midbrain directs somatic responses toward visual and auditory stimuli and coordinates movement.
  • Question 6: What is the primary role of the myelin sheath, and what happens if it is damaged?
    • Myelin functions as an insulating fatty layer surrounding the axon, increasing the speed and efficiency of action potential propagation. Damage to the myelin sheath degrades neural conduction efficiency, causing motor deficits, sensory disruptions, and impaired cognitive communication.
  • Question 7: Compare the functional roles of the hindbrain, midbrain, and forebrain.
    • The hindbrain regulates fundamental autonomic survival actions and motor coordination. The midbrain integrates sensory reflexes with motor control and arousal networks. The forebrain performs complex sensory processing, high-level cognition, voluntary motor planning, emotional regulation, and memory consolidation.
  • Question 8: What regulatory tasks are executed by the hypothalamus?
    • The hypothalamus monitors internal physiological states to maintain biological homeostasis, regulating body temperature, hunger, thirst, sexual behavior, stress pathways, and reward processing. It serves as the primary neural link to the endocrine system by controlling the pituitary gland.
  • Question 9: What is the main functional responsibility of the hippocampus?
    • The hippocampus processes, encodes, and consolidates new explicit declarative memories and spatial navigation routes. Bilateral damage prevents the formation of new semantic and episodic long-term memories, while leaving established pre-injury memories and procedural motor skills intact.
  • Question 10: How does the endocrine system interact with the nervous system?
    • Endocrine glands synthesize and secrete chemical messengers called hormones directly into the bloodstream. Hormones travel throughout the body to regulate growth, metabolic rates, stress responses, mood states, and reproduction. Endocrine signaling occurs more slowly than neural impulses but produces longer-lasting behavioral and physiological effects.
  • Question 11: Compare the functions of the sympathetic and parasympathetic nervous systems.
    • The sympathetic division mobilizes metabolic resources during perceived threats or physical challenges (increasing heart rate, expanding airways, inhibiting digestion). The parasympathetic division conserves energy and calms physiological systems during non-threatening conditions (slowing heart rate, stimulating digestive pathways). Together, they maintain autonomic equilibrium.
  • Question 12: How do the two cerebral hemispheres interact and differ functionally?
    • Both cerebral hemispheres participate across virtually all cognitive operations and communicate continuously via the corpus callosum. However, lateralization exists: the left hemisphere exhibits functional specialization for linguistic operations and sequential analytical reasoning, whereas the right hemisphere displays advantages in visual-spatial, facial, and holistic perceptual processing.
  • Question 13: What occurs when a neuron "fires," and how is stimulus intensity encoded?
    • When membrane potential reaches threshold, a neuron fires by producing an all-or-none action potential along the length of its axon. Stimulus intensity is not encoded by changing the magnitude or voltage size of the electrical spike, but by increasing the neural firing frequency and mobilizing a greater total count of firing neurons.
  • Question 14: What structures comprise the limbic system, and what functions do they support?
    • The limbic system includes the amygdala (emotional signaling, threat detection, and fear processing), the hippocampus (explicit memory formation and spatial awareness), and the hypothalamus (homeostatic regulation, reward, and motivational drives). These interconnected structures coordinate emotional expression, memory formation, and goal-directed behaviors.
  • Question 15: What was learned from the Phineas Gage case study?
    • Phineas Gage survived an iron rod driven through his frontal lobes, exhibiting severe changes in social conduct, decision-making, and emotional regulation post-injury. His case provided early evidence that prefrontal cortical regions mediate executive control, long-term planning, impulse control, and personality traits.

• Chapter 2 Memory Anchors:

  • Dendrites detect; axons act away.
  • Sensory arrives; motor exits; interneurons integrate.
  • Sympathetic speeds up; parasympathetic pauses/calms.
  • Occipital = optical; temporal = tunes; frontal = future plans; parietal = pressure/position.
  • Thalamus relays; hypothalamus maintains.

Chapter 5: Lifespan Development Terms and Written Questions

• Key Terminology & Definitions:

  • Developmental Psychology: Study of physical, cognitive, and social change across the lifespan.
  • Maturation: Biologically programmed growth processes that unfold with experience.
  • Cross-sectional Study: Compares different age groups at one time; fast, but age differences may reflect cohort effects.
  • Longitudinal Study: Follows the same people over time; reveals individual change but takes longer and can lose participants.
  • Sensitivities Vary: People differ in how strongly they respond to the same environment or experience.
  • Combinations Differ: Development reflects different combinations of risks, protections, genes, and experiences.
  • Risks and Protections Interact: Protective influences can reduce the effects of risk, while accumulated risks can increase difficulty.
  • Context Matters: The meaning and effect of an experience depend on family, culture, timing, and surrounding conditions.
  • Effects Lag and Cascade: An influence may appear later and can start a chain in which one developmental change affects later areas.
  • Zygote: Fertilized egg during roughly the first two weeks after conception.
  • Embryo: Developing organism from about weeks $2$ to $8$, when major organs begin forming.
  • Fetus: Developing organism from about week $9$ until birth, marked by growth and maturation.
  • Teratogens: Harmful environmental agents that can reach the embryo or fetus and disrupt development.
  • Fetal Alcohol Syndrome: Pattern of physical and cognitive problems caused by heavy prenatal alcohol exposure.
  • Habituation: Decreasing response to a repeated stimulus; researchers use it to study infant learning and discrimination.
  • Cognition: Mental activities involved in thinking, knowing, remembering, and communicating.
  • Schema / Schemas: Mental framework used to organize and interpret information.
  • Assimilation: Interpreting a new experience using an existing schema.
  • Accommodation: Changing an existing schema or creating a new one to fit new information.
  • Sensorimotor Stage: Piaget's birth-to-about-$2$ stage; infants learn through senses and actions and develop object permanence.
  • Object Permanence: Understanding that objects continue to exist when unseen.
  • Preoperational Stage: About ages $2$ to $7$; symbolic thought and language grow, but logical operations and conservation remain limited.
  • Egocentrism: Difficulty seeing a situation from another person's perspective.
  • Theory of Mind: Understanding that others have their own beliefs, knowledge, desires, and feelings.
  • Conservation: Understanding that quantity remains the same despite a change in shape or appearance.
  • Concrete Operational Stage: About ages $7$ to $11$; logical reasoning about concrete events and conservation develop.
  • Formal Operational Stage: Beginning around age $12$; capacity for abstract and hypothetical reasoning develops.
  • Scaffold: Temporary, adjustable support that helps a learner complete a task and is removed as competence grows.
  • Attachment: Strong emotional bond between an infant and caregiver.
  • Stranger Anxiety: Fear or wariness of unfamiliar people, often emerging in late infancy.
  • Imprinting: Rapid attachment during a biologically sensitive period in certain animals.
  • Secure Attachment: Child uses caregiver as a secure base, is distressed by separation, and is comforted at reunion.
  • Insecure Attachment: Attachment pattern marked by unusually avoidant, resistant, or disorganized behavior toward a caregiver.
  • Basic Trust: Erikson's idea that responsive care teaches infants that the world is dependable.
  • Authoritative Parenting: High warmth and reasonable, consistent limits; linked on average with self-reliance and social competence.
  • Authoritarian Parenting: Low warmth and strict, inflexible control; linked on average with lower self-esteem or social skills and greater anxiety or rebellion.
  • Permissive Parenting: High warmth with few rules or demands; linked on average with weaker self-control.
  • Neglectful Parenting: Low warmth and low control/involvement; generally linked with the poorest developmental outcomes.
  • Adolescence: Transition from childhood to adulthood, beginning with puberty and involving biological, cognitive, and social change.
  • Puberty: Period of sexual maturation and reproductive capability.
  • Identity: A person's developing sense of who they are, including values, roles, and goals.
  • Social Identity: Part of self-concept based on group memberships.
  • Emerging Adulthood: Transitional period, often late teens through twenties, involving exploration and increasing independence.
  • Intimacy: Ability to form close, committed relationships without losing one's identity.
  • Social Clock: Culture's expected timing for major life events.
  • Menopause: Natural end of menstruation and fertility, usually in middle adulthood.
  • Neurocognitive Disorders: Significant decline in cognitive functioning that interferes with daily life.
  • Alzheimer's Disease: Progressive neurocognitive disease involving worsening memory, thinking, and daily functioning.
  • Moral Action: Actual behavior based on moral judgment, emotion, self-control, and the situation—not reasoning alone.

• High-Scoring Written Answers:

  • Question 1: Explain how teratogens affect prenatal development.
    • Teratogens cross the placental barrier and disrupt physical, structural, or neural development in the embryo or fetus. Teratogenic impact depends on dosage, exposure timing, duration, maternal-fetal genetic susceptibility, and environmental interactions. Exposure during critical embryonic windows produces severe congenital malformations.
  • Question 2: Compare cross-sectional and longitudinal developmental research methods.
    • Cross-sectional studies compare different age cohorts simultaneously, offering time-efficient data collection but remaining susceptible to cohort confounding effects. Longitudinal studies evaluate the same cohort across extended timeframes, directly tracking individual developmental trajectories, but require years to execute and face participant attrition and testing practice effects.
  • Question 3: How do developmental psychologists evaluate cognitive abilities in non-verbal newborns?
    • Because infants cannot speak, researchers track physiological and behavioral markers including visual fixations, sucking frequencies, heart rate changes, head rotation, and habituation. Renewed attention or dishabituation following a stimulus change proves the infant perceived and remembered the difference.
  • Question 4: Describe the developmental trajectory of moral reasoning.
    • Moral reasoning shifts from externally controlled, outcome-driven rules toward internal moral principles considering intentions, structural laws, human rights, and universal ethical standards. Moral development is fostered by cognitive growth, perspective-taking, emotional empathy, parenting styles, peer interactions, and cultural framing; advanced reasoning does not strictly guarantee ethical moral action.
  • Question 5: Contrast cognitive trajectories between middle and late adulthood.
    • Processing speed, working memory capacity, and rapid recall tasks show normative age-related declines. Conversely, crystallized intelligence—including vocabulary knowledge, accumulated factual information, professional expertise, and practical life judgment—remains stable or improves. Normal cognitive aging differs from progressive neurocognitive diseases.
  • Question 6: How does subjective emotional well-being change across the lifespan?
    • Emotional well-being remains stable or increases in late adulthood because older adults tend to regulate emotions effectively and prioritize emotionally meaningful social relationships. Although health challenges and bereavement increase, advanced age does not automatically cause declines in subjective life satisfaction.
  • Question 7: What are the long-term impacts of childhood adversity on development?
    • Chronic or severe adversity alters physiological stress responses, raising risks for long-term physical health problems, learning difficulties, and social-emotional challenges. Adversity increases risk factors but does not predetermine outcomes: supportive relationships, structured environments, emotional regulation, and biological factors promote resilience.
  • Question 8: Outline Piaget's cognitive development theory and modern modifications.
    • Piaget posited that children construct cognitive schemas by assimilating new information and accommodating schemas when encountering discrepancies, progressing through four distinct stages: sensorimotor, preoperational, concrete operational, and formal operational. Contemporary research confirms children actively construct knowledge, but demonstrates that cognitive capabilities emerge earlier, progress continuously rather than in rigid stages, and are heavily shaped by cultural background, social scaffolding, and experimental task design.
  • Question 9: Contrast the developmental theories of Jean Piaget and Lev Vygotsky.
    • Piaget emphasized independent environmental exploration and universal cognitive developmental stages. Vygotsky emphasized social interaction, language acquisition, and cultural context, asserting that learning occurs within the Zone of Proximal Development via instructional scaffolding provided by competent social mentors.
  • Question 10: How does self-concept develop from infancy through adolescence?
    • Self-concept originates with visual self-recognition during toddlerhood, becomes structured through descriptive traits during middle childhood via social comparisons, and undergoes operational reorganization during adolescence as individuals integrate diverse roles, values, and social identities.
  • Question 11: Describe the four classical parenting styles and their developmental correlations.
    • Authoritative parents combine high emotional warmth with firm, consistent rule structures, predicting high social competence and self-reliance. Authoritarian parents exert high control with minimal warmth, correlating with lower self-esteem, elevated anxiety, and social passivity. Permissive parents display high warmth with few limits, correlating with poor impulse control and reduced self-regulation. Neglectful parents offer low warmth and minimal control, yielding the poorest developmental outcomes across social and academic domains.
  • Question 12: Describe physical and neurological changes occurring during adolescence.
    • Puberty triggers endocrine changes, growth spouts, primary and secondary sex characteristic maturation, and reproductive capability. Concurrently, extensive brain remodeling occurs, characterized by synaptic pruning and prefrontal cortex myelination to support executive control and impulse regulation.
  • Question 13: What physical changes characterize middle and late adulthood?
    • Gradual declines occur in muscular strength, visual acuity, auditory sensitivity, reaction times, bone mineral density, and organ efficiency. Menopause marks the permanent cessation of female reproductive capacity. Regular exercise, preventive healthcare, positive environments, and genetics account for substantial individual differences in aging trajectories.
  • Question 14: Analyze primary social and developmental tasks in adolescence.
    • Adolescents navigate identity formation, emerging independence from primary caregivers, peer group integration, romantic bonding, and shifting family roles. Peer influence and social risk-taking increase, alongside an expanding capacity for mature empathy, personal values, and prosocial responsibility.
  • Question 15: Contrast the relative influences of parents and peers during adolescence.
    • Parents retain greater influence over foundational moral values, educational choices, career goals, and long-term worldviews. Peers exert stronger influence over immediate behavioral choices, speech patterns, style, and social activities. The strength of influence varies by relationship quality and environmental context.

• Chapter 5 Memory Anchors:

  • Assimilate = add to an old schema; accommodate = alter the schema.
  • Sensorimotor: senses/actions; preoperational: pretend but not logical; concrete: logical with real things; formal: abstract.
  • Authoritative = warm + limits (think authority with explanation).
  • Cross-sectional = different people now; longitudinal = same people later.

Active-Recall Check and Self-Assessment

• Self-Assessment Retrieval Questions & Answers:
  1. Question: Why can correlation predict without proving cause?
     • Answer: Because reverse directionality of influence and unmeasured third variables can account for the relationship between the two variables.
  2. Question: How do random sampling and random assignment differ?
     • Answer: Random sampling selects participants from an overall population to ensure sample representativeness; random assignment places chosen participants into experimental or control conditions by chance.
  3. Question: Identify the IV and DV in a study testing whether sleep affects exam scores.
     • Answer: Independent Variable (IV): amount of sleep; Dependent Variable (DV): exam score.
  4. Question: When is median better than mean?
     • Answer: The median is preferred when data distributions are heavily skewed or contain extreme outliers.
  5. Question: What four steps connect one neuron's electrical signal to the next neuron's response?
     • Answer: Step 1: Reaching threshold triggers an action potential. Step 2: Conduction down the length of the axon. Step 3: Release of neurotransmitters into the synapse. Step 4: Neurotransmitter binding to postsynaptic membrane receptors.
  6. Question: Contrast an agonist and antagonist.
     • Answer: An agonist increases or mimics a neurotransmitter's activity; an antagonist blocks or decreases a neurotransmitter's action.
  7. Question: Contrast sympathetic and parasympathetic activity.
     • Answer: The sympathetic system arouses the body and mobilizes energy under stress; the parasympathetic system calms the body and conserves physiological resources.
  8. Question: Name one main function of each brain lobe.
     • Answer: Frontal Lobe: executive planning and voluntary movement; Parietal Lobe: processing body touch and spatial positions; Occipital Lobe: visual processing; Temporal Lobe: auditory processing, language, and memory.
  9. Question: Contrast thalamus, hypothalamus, hippocampus, and amygdala.
     • Answer: Thalamus: sensory relay station; Hypothalamus: maintains physiological homeostasis; Hippocampus: encodes new explicit long-term memories; Amygdala: processes emotional signaling, threat, and fear.
  10. Question: Explain plasticity using an injury or learning example.
      • Answer: Neuroplasticity allows neural pathways to reorganize so that undamaged brain areas can compensate for functional deficits caused by structural brain damage or skill acquisition.
  11. Question: Put zygote, embryo, and fetus in order.
      • Answer: Order: Zygote (first $2\,\text{weeks}$), Embryo (weeks $2$ to $8$), Fetus (week $9$ until birth).
  12. Question: Contrast assimilation and accommodation with one example.
      • Answer: Assimilation fits a new experience into an existing mental schema (e.g., calling a four-legged dog a "cat"); accommodation alters or creates a schema to incorporate new information (e.g., creating a separate "dog" schema).
  13. Question: Name Piaget's four stages in order and one achievement from each.
      • Answer: Sensorimotor (achievement: object permanence), Preoperational (achievement: symbolic representation / pretend play), Concrete Operational (achievement: conservation), Formal Operational (achievement: abstract hypothetical reasoning).
  14. Question: Why can longitudinal and cross-sectional studies reach different conclusions?
      • Answer: Cross-sectional designs are vulnerable to cohort effects (historical/generational differences), whereas longitudinal designs track within-person changes over time but suffer from attrition.
  15. Question: Contrast Piaget and Vygotsky.
      • Answer: Piaget emphasized independent exploration through universal developmental stages; Vygotsky emphasized social interaction, cultural tools, and guided scaffolding within the Zone of Proximal Development.
  16. Question: Name all four parenting styles using warmth and control.
      • Answer: Authoritative (high warmth, high control), Authoritarian (low warmth, high control), Permissive (high warmth, low control), Neglectful (low warmth, low control).
  17. Question: Explain why childhood adversity raises risk without determining destiny.
      • Answer: Adversity alters baseline physiological stress systems and introduces developmental risks, but protective factors (such as supportive caregivers, stable environments, personal coping skills, and resilience) modify outcomes.
  18. Question: Which cognitive abilities commonly decline with age, and which remain strong?
      • Answer: Processing speed, working memory, and fluid recall tend to decline; vocabulary, general factual knowledge, semantic memory, and domain expertise remain stable or increase.