Week Two - Lecture Two - Measuring Development & Psychoanalytic Theories (Recording)

Longitudinal vs. Cross-Sectional Studies

  • Longitudinal Studies

    • Study the same individuals over time as they age.

    • Example: Observing the same subjects at ages 30, 45, and 60.

    • Strengths: Track individual changes and constancy.

    • Challenges: Difficult to conduct due to time and funding constraints.

  • Cross-Sectional Studies

    • Study different individuals at various ages simultaneously.

    • Example: Studying separate groups aged 30, 45, and 60.

Microgenetic Studies

  • Definition

    • Focus on following developmental changes over short timescales.

    • Example: Observing children’s skill acquisition like standing or walking over a couple of weeks.

  • Benefits

    • Captures nuanced data on the emergence of skills.

    • Helps understand variances in skill acquisition among children.

Sequential Designs

  • Concept

    • Combines aspects of both cross-sectional and longitudinal designs.

    • Involves testing multiple cohorts over time to observe developmental trends.

  • Advantages

    • Mitigates cohort effects, allowing researchers to observe different age groups at various time points.

  • Challenges

    • More complex and difficult to conduct than a single type of study.

Evaluating Scientific Research

  • Reliability, Validity, and Replicability

    • Reliability: Measures whether a study can yield consistent results over repetitions.

    • Types include test-retest reliability and interrater reliability.

    • Validity: Assesses if a study measures what it purports to measure.

    • Types include internal and external validity.

    • Replicability: Describes if other researchers can achieve similar results using the same methods.

File Drawer Problem

  • Definition

    • Refers to the bias where studies showing significant results are published, while those that do not are stored away and unpublished.

Theoretical Perspectives in Developmental Psychology

  • Nature vs. Nurture

    • Discusses the genetics versus environment debate in development.

  • Activity vs. Passivity

    • Examines whether individuals actively shape their development or passively experience it.

  • Continuity vs. Discontinuity

    • Differentiates between gradual development (quantitative change) and stage-like progression (qualitative change).

  • Universality vs. Context Specificity

    • Looks at whether developmental processes are consistent across cultures or vary significantly.

  • Domain Specificity vs. Domain Generality

    • Addresses whether cognitive development is specialized or utilizes general cognitive processes.

Freud's Theory of Development

  • Major Influences

    • Introduced personality components: Id, Ego, Superego.

    • Proposed a series of stages driven by libido, from oral to phallic stages.

  • Concepts

    • Discussed defense mechanisms (regression, fixation, identification) and emphasized unconscious processes.

  • Contributions

    • Spotlighted the significance of early experiences and emotions in development.

  • Critiques

    • Theories are often difficult to test, overly focused on sexuality, and vague in applications.