Lifespan Development

The concept of human development, also known as lifespan development, encompasses the various changes individuals undergo over their lives, specifically in three key areas: physical, cognitive, and social.
Importance of understanding that growth and change go beyond just physical aspects; cognitive abilities and social interactions also evolve.
Introduction of prominent figures in development psychology to be discussed throughout the lesson.

Audience assumed to consist of individuals aged approximately 18 to 29.
Prompt encouraging reflections on personal changes over the past 10-15 years, connecting past experiences to present realities.
Reminder to consider a wide range of changes, beyond physical development, including cognitive and social improvements:
- Cognitive enhancements reflect increased creativity and problem-solving abilities since childhood.
- Emphasis on the brain’s continual development, allowing for more advanced thought processes.
- Social maturity noted through the formation of more complex interpersonal relationships.

Acknowledgment of the ongoing nature versus nurture debate in lifespan development; both sides are valid and integral.

Introduction of Erikson as a counter to Freud's theory:
- Freud’s focus on psychosexual stages contrasts Erikson’s emphasis on psychosocial tasks.
Erikson identified eight stages of psychosocial development:
- Stage 1: Trust vs. Mistrust (Infancy)
- A child must develop trust in their caregivers based on reliability. Success leads to trust, while failure might result in anxiety or depression later in life.
- Stage 8: Integrity vs. Despair (Late Adulthood)
- Reflection on life experiences; achieving a sense of fulfillment leads to integrity, while unmet aspirations lead to despair.
All stages are structured as a dichotomy illustrating the tasks of different life phases, encouraging critical self-reflection.

Overview of Piaget's four stages of cognitive development differentiating his framework from Erikson’s:
- Sensorimotor Stage: Birth to 2 years.
- Preoperational Stage: Ages 2 to 7, characterized by egocentric thinking.
- Concrete Operational Stage: Ages 7 to 11, marked by logical thinking about concrete events.
- Formal Operational Stage: Ages 12 and up, illustrates abstract and logical reasoning.
Cognitive changes correspond to developing abilities, akin to leveling up in a game, moving from one stage to another based on cognitive capabilities.

Egocentrism: Typical of preoperational children (e.g., misunderstandings about others' preferences and abilities).
Conservation: Concept that understanding quantity remains the same despite changes in shape; younger children often fail this task.
Object Permanence: Understanding that objects exist even when not visible appears around nine months old.
Logical expectation experiments showing that even infants can recognize illogical scenarios, marking a significant milestone.

Discussion on stages of moral reasoning:
- Preconventional Morality: Decisions based on avoidance of punishment.
- Conventional Morality: Aligning behaviors with societal standards and expectation.
- Postconventional Morality: Ethical beliefs based on universal principles and human rights that may contradict written laws.
Recognition that many people remain at the conventional stage, resulting in limited moral development.

Pregnancy lasts about 40 weeks, partitioned into three stages:
- Zygote Stage: First week post-fertilization as a one-celled organism.
- Embryo Stage: Weeks 2 to 8 where critical developments occur.
- Fetal Stage: From week 9 until birth, characterizing the growth period.
Discussion of teratogens, harmful substances affecting fetal development.
- Examples include tobacco, alcohol, and certain types of fish containing mercury.

Examples of developmental milestones such as independence in motor control (fine and gross motor skills).
- Fine motor skills include actions like grasping and manipulating objects, while gross motor skills involve larger muscle movements (e.g., running, jumping).

Cognitive milestones involving significant changes in memory, language, and reasoning.
- Vocabulary spurt typically occurs during early childhood, with girls often showing a head start in language skills compared to boys.

Attachment theory: Bond between infant and caregiver varies in quality (secure, avoidant, disorganized).
- Securely attached infants feel safe exploring their environment, while insecurely attached infants might demonstrate indifference or anxiety about their caregiver.
Stranger anxiety typically emerges around the first birthday as infants exhibit wariness of unfamiliar people.

Shifting social influence from parents to peers; the role of privacy and respect during adolescence.
Variability in self-esteem during puberty:
- Early developing boys often experience boosts in confidence, becoming more dominant.
- Early developing girls might struggle with self-consciousness and social pressures, possibly leading to higher risks of mental health issues.

Development of the frontal lobes continues into the mid-twenties, impacting decision-making and impulse control.
Variability in cognitive maturity between adolescents and older individuals underscores the separate juvenile justice system for young offenders.

Acknowledgment of aging and stress on its inevitability, with emphasis on the importance of maintaining physical and cognitive engagement to mitigate decline.
Stress the significance of social support networks as crucial for cognitive health among seniors.
Closing thoughts linking social activity to Erikson's integrity vs. despair, reinforcing the positive impacts of a fulfilled life.