Science of Psychology 6E - Ch 9

Definition of Development: Refers to the pattern of continuity and change in human capabilities throughout life, including aspects of both growth and decline.
Three Interrelated Processes of Development:
- Physical Processes: Changes in biological nature, including genetics, hormonal changes, brain development, growth in height and weight, and motor skills.
- Cognitive Processes: Changes in thinking, intelligence, and language. It includes activities like problem-solving and memory.
- Socioemotional Processes: Changes in social relationships and emotions, impacting personality and attachment. Examples include responses to social stimuli and emotional attachments.

Cross-Sectional Studies: Compare individuals of different ages at a single point in time to identify age-related differences, subject to cohort effects.
Longitudinal Studies: Follow the same individuals over time to observe developmental changes and assess how specific characteristics evolve.

Nature: Refers to biological inheritance (genes).
Nurture: Refers to environmental and social experiences.
Gene-Environment Interaction: Understanding that an individual's phenotype (observable traits) is shaped by both genetic and environmental factors.

Prenatal Development Stages:
- Germinal: First two weeks post-conception; zygote formation and cell division.
- Embryonic: Weeks 3 to 8; development of support systems and major organs.
- Fetal: Months 2 to 9; significant growth and organ development.
Teratogens: Agents disrupting fetal development, including alcohol and various drugs.
Physical Reflexes in Infants:
- Instinctual reflexes essential for survival such as sucking and grasping, which diminish as voluntary control increases.
Motor and Perceptual Skills: Developmental milestones include reaching and sensory abilities.

Piaget's Stages of Cognitive Development:
- Sensorimotor (Birth to 2 years): Learning through physical interactions with the world, understanding object permanence.
- Preoperational (2 to 7 years): Development of symbolic thought; egocentrism is prevalent.
- Concrete Operational (7 to 11 years): Logical reasoning regarding concrete events; understanding of conservation.
- Formal Operational (11 years and up): Abstract, idealistic, and logical thinking.
Erikson's Stages: Handled psychosocial conflicts, such as trust versus mistrust (infancy) and autonomy versus shame (toddlerhood).
Kohlberg's Moral Development: Involves understanding justice and moral reasoning through preconventional, conventional, and postconventional stages.

Puberty: Rapid physical growth and sexual maturation during early adolescence; affected by hormonal changes.
Cognitive Development: Egocentrism resurfaces, leading to increased emotionality and risk-taking behaviors.
Identity Formation: Adolescents explore their identities, resolving the crisis of identity versus identity confusion (Erikson).

Transition to Adulthood: Emerging adulthood (ages 18-25) characterized by identity exploration in love and work while experiencing instability and self-focusing.
Intimate Relationships: Developmental tasks include forming intimate relationships, often influenced by parenting style.

Physical Changes: Declines start in early adulthood with peaks in strength and sensory functions in the 20s, followed by gradual declines.
Cognitive Changes: Potential decline in processing speed and memory; however, practical knowledge and wisdom often increase over time.
Socioemotional Development: Focus shifts to generativity versus stagnation (middle adulthood) and integrity versus despair (late adulthood).

Coping Mechanisms: Active engagement in coping with stress leads to development.
Life Themes: Pursuing meaningful experiences (e.g., legacy building).

Human development is a continuous process influenced by a combination of biological, social, and personal factors.
Individuals actively shape their paths through decisions influenced by their environments and experiences.