lesson 0-1 psych Summary & Study Notes

🌱 Overview: Hereditary and Environmental Factors

Psychological development describes lifelong changes in emotional, cognitive, and social functioning. Development is complex and arises from an interaction of hereditary (nature) and environmental (nurture) influences rather than from one source alone.

🧬 Hereditary (Nature)

Hereditary factors are biological features passed genetically from parents to offspring. Some traits are obvious (e.g., eye colour, height) while others influence developmental processes such as the rate of brain and nervous system maturation. Genetic predisposition means an increased likelihood of developing certain traits (e.g., aspects of personality or cognitive ability) but does not guarantee their expression.

🌍 Environmental (Nurture)

Environmental factors encompass all external experiences, objects, and events across the lifespan. Key examples include education, socioeconomic status (SES), culture, religion, social groups, employment, physical surroundings, and early childhood experiences. These shape development by interacting with genetic predispositions.

🔄 Interaction and Complexity

No two individuals develop identically—even identical twins show differences. Individual differences can appear as uneven development across domains (e.g., strong cognition but difficulty with emotional expression). Development reflects ongoing interactions between genetic makeup and life experiences, so nurture can sometimes mitigate or amplify nature-based vulnerabilities.

🧪 Research and Study Design

Understanding nature–nurture requires designs that compare genetic similarity and environmental exposure (e.g., twin studies). The focus is on how hereditary and environmental factors combine to influence emotional, cognitive, and social development across the lifespan.

🧠 Domains of Psychological Development

• Emotional development: skills to recognise, express, and regulate emotions appropriately.
• Cognitive development: changes in thinking, reasoning, and information processing.
• Social development: skills for effective and appropriate interaction with others.

✅ Key Terms

Hereditary factors, Environmental factors, Nature vs Nurture, Genetic predisposition, Psychological development.

📚 Classroom links

The Cambridge textbook chapter referenced (Chapter 3A) and classroom activities (e.g., twin-studies video) help illustrate concepts and provide empirical examples of nature–nurture research.

🧭 Orientation: Psychology as a Science

Psychology seeks to describe, explain, understand, and predict behaviour and mental processes. It adopts a biopsychosocial approach, integrating biological, psychological, and social/environmental perspectives to study individuals, groups, and societies.

🔬 The Scientific Method in Psychology

Psychology is a science because it uses the scientific method: formulating and testing hypotheses, making objective measurements, gathering evidence, and drawing conclusions. Typical steps include observation, hypothesis, experiment, analysis, and conclusion (e.g., studies of contagious yawning).

🧾 Course Organisation & Requirements

• Unit 1 includes three Areas of Study: Psychological Development, The Brain, and Psychological Research.
• Students must keep a dated logbook of practical work (A5 recommended) for authentication and assessment. The logbook is required for satisfactory completion and is checked regularly.
• Each AOS has a coursework booklet that students must complete in class; these booklets are essential and should be kept safe or reprinted from Google Classroom if lost.
• If you miss class, you are responsible for catching up: take notes, complete coursework, review textbook pages and Google Classroom resources, and schedule time to complete any logbook activities you missed.

⚖️ Science vs Pseudoscience

Pseudoscience makes claims without using the scientific method (no objective evidence, no hypothesis testing). Examples include homeopathy, astrology, palmistry, clairvoyance, and phrenology. Psychology distinguishes itself by relying on empirical testing and peer-reviewed evidence.

🧩 Unit 1 Topic Highlights

• AOS 1 (Psychological Development): hereditary & environmental influences; typical vs atypical behaviour; neurodiversity; support and management of mental wellbeing.
• AOS 2 (The Brain): brain structure and function, neuroplasticity, acquired brain injury, and contemporary research into neurological disorders.
• AOS 3 (Psychological Research): designing and validating research questions, scientific evidence, communication, and analysis/evaluation of psychological research.

✅ Practical Advice

Stay current with coursework, keep the logbook updated and dated, use the Cambridge textbook as an optional resource, and engage with Google Classroom materials (videos and lesson slides) to support your learning.