Developmental psychology Study Guide

📖 Core Concepts Developmental Psychology – Scientific study of how and why humans change across the lifespan (infancy → old age). Three Dimensions of Development – Physical (body/brain), Cognitive (thinking, memory, reasoning), Social‑emotional (relationships, emotions, identity). Nature ↔ Nurture – Ongoing interaction between genetic predispositions and environmental experiences; modern view is a dynamic integration of both. Continuity vs. Discontinuity – Continuity: gradual quantitative change; Discontinuity: qualitative stage‑like shifts (e.g., Piaget, Erikson). Stability vs. Change – Some traits stay consistent over time; others are reshaped by new experiences or developmental processes. Ecological Systems (Bronfenbrenner) – Nested layers influencing a child: Microsystem → Mesosystem → Exosystem → Macrosystem → Chronosystem (time). Zone of Proximal Development (Vygotsky) – Gap between what a learner can do alone vs. with help; scaffolding bridges that gap. Attachment Styles (Ainsworth) – Secure, anxious‑avoidant, anxious‑resistant, disorganized; early patterns predict later social/mental health outcomes. Moral Development (Kohlberg) – Three levels (pre‑conventional, conventional, post‑conventional) each containing two stages of moral reasoning. Psychosocial Crises (Erikson) – Eight stage‑specific conflicts (e.g., Trust vs. Mistrust, Identity vs. Role Confusion) each resolved by a virtue. --- 📌 Must Remember Piaget’s 4 Stages: Sensorimotor, Pre‑operational, Concrete Operational, Formal Operational. Erikson’s 8 Virtues: Hope, Will, Purpose, Competence, Fidelity, Love, Care, Wisdom. Bronfenbrenner’s Systems: Microsystem (home/school), Mesosystem (inter‑system links), Exosystem (parent’s workplace), Macrosystem (culture), Chronosystem (time). Attachment Types & Outcomes: Secure → healthy relationships; Insecure (avoidant/resistant) → higher risk of aggression/depression; Disorganized → greatest risk. Kohlberg’s Levels: Pre‑conventional: avoid punishment / gain rewards. Conventional: obey laws, maintain social order. Post‑conventional: universal ethical principles. Nature vs. Nurture: Neither alone explains development; gene‑environment interaction is the core mechanism. Research Designs: Cross‑sectional – compare ages at one time. Longitudinal – follow same cohort over years. Sequential – combine both. Microgenetic – intensive observation of rapid change. Memory (Fuzzy‑Trace Theory) – Verbatim (surface details) peaks early adulthood then declines; Gist (semantic meaning) stays stable. Theory of Mind – Emerges 5 yrs; ability to infer others’ mental states. --- 🔄 Key Processes Equilibration (Piaget) Assimilation: Fit new info into existing schemas. Accommodation: Modify schemas to incorporate new info. Equilibration: Tension resolved → higher‑order understanding. Scaffolding (Vygotsky) Identify learner’s ZPD. Provide temporary support (modeling, cues, feedback). Gradually withdraw support as competence grows. Attachment Formation (Ainsworth Strange Situation) Observe infant behavior during: (1) baseline, (2) separation, (3) reunion. Secure = seeks comfort, easily soothed. Insecure‑avoidant = shows little distress. Insecure‑resistant = intense distress, not easily soothed. Disorganized = contradictory/odd behaviors. Moral Reasoning (Kohlberg – Heinz Dilemma) Present dilemma → ask “What should Heinz do?” and “Why?” Score based on reasoning level (punishment avoidance → societal law → universal principle). --- 🔍 Key Comparisons Piaget vs. Vygotsky Piaget: Stages are universal & biologically driven; learning occurs through self‑discovery. Vygotsky: Development is continuous; social interaction and language are primary drivers. Nature‑Nativist vs. Empiricist Nativist: Innate mechanisms (e.g., Chomsky’s universal grammar). Empiricist: Learning from statistical regularities in the environment. Secure vs. Insecure Attachment Secure: Trust, exploration, balanced emotions. Insecure (avoidant/resistant): Withdrawal or heightened anxiety; poorer peer relationships. Stage Theories vs. Dynamic Systems Stage: Discrete, qualitatively different periods. Dynamic: Continuous, nonlinear interactions among multiple variables. --- ⚠️ Common Misunderstandings “Piaget said children can’t think abstractly until adolescence.” Correction: Formal operational thought emerges in about 35 % of adolescents; many use concrete reasoning longer. “Attachment is only about the mother.” Correction: Any consistent, responsive caregiver can serve as the attachment figure; father involvement matters from 15 months onward. “Erikson’s stages end at old age.” Correction: All eight stages continue throughout life; each stage’s crisis can be revisited in later contexts. “Cross‑sectional studies prove developmental change.” Correction: They show age differences, not true change; longitudinal designs are needed for causality. --- 🧠 Mental Models / Intuition “Development as a River” – Imagine a river (genetic predispositions) flowing through a landscape (environment). The river’s course is shaped by the terrain, creating bends (experiences) that alter its path without changing its water. “Construction Zone” – Children are active builders (constructivism). Scaffolding is the temporary crane that lets them reach higher levels before being removed. “Ecological Onion” – Visualize concentric circles; the innermost is the child, each outer layer adds complexity (family → community → culture → historical time). --- 🚩 Exceptions & Edge Cases Stage Timing Variability – Piaget’s ages are averages; some children enter formal operational earlier or later. Cultural Differences in Moral Reasoning – Western focus on autonomy vs. non‑Western emphasis on community welfare may shift Kohlberg stage manifestations. Disorganized Attachment – Often linked to trauma or caregiver fear; not simply a “mixed” secure/insecure pattern. Neuroplasticity vs. Biological Essentialism – Even genetically predisposed traits can be altered dramatically by enriched environments (e.g., early language exposure). --- 📍 When to Use Which Diagnosing Moral Reasoning → Use Kohlberg’s Heinz Dilemma scoring sheet. Assessing Attachment → Apply Ainsworth’s Strange Situation for infants; Adult Attachment Interview for adults. Planning Classroom Instruction → If learners are within ZPD, employ scaffolding; if they have mastered a concept, move to independent practice. Choosing Research Design → Want rapid age comparison → Cross‑sectional. Want developmental trajectories → Longitudinal or Microgenetic (for rapid change). Need both breadth and depth → Sequential. --- 👀 Patterns to Recognize “A‑not‑B error” in sensorimotor infants → indicates lack of object permanence. Reversal of Egocentrism → Appears at the transition from pre‑operational to concrete operational stage. Shift from Verbatim to Gist Memory → Noticeable after early adulthood; older adults rely more on gist. Reciprocal Influence in Bronfenbrenner’s Systems → Changes in the exosystem (e.g., parental job loss) often ripple to the microsystem (family stress). --- 🗂️ Exam Traps Mistaking “Pre‑operational” for “Pre‑conventional” – One is a cognitive stage (Piaget), the other a moral stage (Kohlberg). Assuming All Adolescents Reach Formal Operational – Only 35 % reliably do; many revert to concrete reasoning. Confusing “Continuity” with “Stability” – Continuity refers to the type of change (gradual), while stability concerns consistency of individual differences. Attributing “Attachment” solely to the Mother – The theory emphasizes the attachment figure, not gender. Interpreting “Cross‑sectional” results as development – Remember they show cohort differences, not true intra‑individual change. ---