Development of Human Behaviour
👶 2.3 Development of Human Behaviour (मानव व्यवहार का विकास)
🧠 Introduction
Human development refers to the systematic changes and continuities in the individual that occur between conception and death — including physical, cognitive, emotional, and social development.
Psychologists aim to understand how people grow, why they change, and how their environment and biology shape them.
🧱 I. Growth vs Development
| Term | Growth | Development |
|---|---|---|
| Focus | Quantitative (e.g. height, weight) | Qualitative (e.g. emotional maturity) |
| Period | Mainly during childhood | Entire lifespan |
| Nature | Biological | Holistic (bio-psycho-social) |
📈 II. Principles of Development
These are universal patterns observed across individuals:
- Development is continuous but may be rapid or slow at different stages
- Proceeds from general to specific (e.g., infants wave arms before they can grasp)
- Cephalocaudal trend: Head-to-toe development
- Proximodistal trend: From centre (torso) to limbs
- Development is influenced by both heredity and environment
- There are individual differences in pace, sequence, and style of development
🧬 III. Role of Genetic and Environmental Factors
🧬 Genetic (Nature) Influences
- Genes determine traits like eye colour, intelligence potential, temperament, risk for disorders
- Twin studies show that even when raised apart, identical twins share behavioural patterns, suggesting genetic influence
Example:
- Indian study on twins in Kerala showed strong hereditary link in IQ scores.
🌱 Environmental (Nurture) Influences
- Family, culture, school, nutrition, and media shape behaviour.
- Socioeconomic status, parenting style, peer influence, and trauma play critical roles.
Example:
- A child born with high IQ potential may fail to develop cognitively in a poor, stimulus-deprived environment.
🌍 IV. Cultural Factors and Socialization
Culture provides the framework of beliefs, practices, and expectations that shape behaviour.
📌 Socialization:
The process by which a child learns to become a member of society, adopting norms, values, language, and behaviour.
Agents of socialization:
- Family (first teacher)
- School (social norms, discipline)
- Peers (independence, identity)
- Media (attitudes, values)
🧘♂️ Indian Context Example:
- Children from tribal regions may show different social maturity timelines due to distinct cultural rituals and role responsibilities at an early age.
- In joint families, children develop stronger interpersonal dependency traits, while in nuclear families, they exhibit greater individualism.
🔄 V. Life Span Development Stages
Development is now seen as life-long, not just limited to childhood. Each stage has distinct tasks and challenges.
| Stage | Age | Key Developmental Task |
|---|---|---|
| Infancy | 0–2 yrs | Trust vs Mistrust (Erikson), sensory-motor stage (Piaget) |
| Early Childhood | 2–6 yrs | Language, autonomy, toilet training, play learning |
| Middle Childhood | 6–12 yrs | Academic achievement, peer group formation |
| Adolescence | 13–18 yrs | Identity formation, role confusion, abstract thinking |
| Early Adulthood | 20–40 yrs | Intimacy vs Isolation, career development |
| Middle Adulthood | 40–60 yrs | Generativity, parenting, productivity |
| Old Age | 60+ yrs | Integrity vs Despair, reflecting on life |
🔍 Example: Erik Erikson’s Psychosocial Theory
- In adolescence, Indian students preparing for competitive exams may experience identity confusion due to career and social pressures.
- In middle adulthood, Indian parents often focus on generativity, e.g., ensuring children’s success even at personal cost.
🧪 VI. Promoting Psychological Well-being Across the Lifespan
| Stage | Intervention | Example |
|---|---|---|
| Childhood | Play therapy, parental support | Anganwadi programs integrate play and nutrition |
| Adolescence | Life-skills education | CBSE includes stress management modules |
| Adulthood | Work-life balance, counselling | IT firms offering mindfulness workshops |
| Old Age | Social engagement, memory training | Day-care centers for elderly in urban India |
🧘♀️ Case Example – India
- Project Poshan (Madhya Pradesh): Combines nutrition with early mental stimulation for tribal infants.
- Manodarpan Initiative: Launched by Ministry of Education to support adolescent mental health during COVID-19.
- NIMHANS programs: Lifespan counselling services for children, adults, and elderly.
✅ Conclusion
Human behaviour develops under the joint influence of genes and environment, and unfolds through predictable yet unique stages. Understanding these patterns enables:
- Better parenting and education
- Early diagnosis of disorders
- Targeted interventions at each life stage
- Enhanced policy planning in health, welfare, and youth development
