Topic 7: Child psychology — Edexcel A-Level Psychology Revision
Biological psychology focuses on the mechanisms within the body and how they affect human behaviour, with a specific emphasis on aggression. It explores th
Topic Synopsis
Biological psychology focuses on the mechanisms within the body and how they affect human behaviour, with a specific emphasis on aggression. It explores the central nervous system, neurotransmitters, brain structure, evolution, and hormones as explanations for behaviour, while considering individual differences and developmental factors.
Key Concepts & Core Principles
- Piaget's theory of cognitive development: stages (sensorimotor, preoperational, concrete operational, formal operational) with key features like object permanence, egocentrism, and conservation.
- Bowlby's attachment theory: innate need for attachment, critical period (2.5 years), monotropy, internal working model, and the continuity hypothesis.
- Ainsworth's Strange Situation: secure, insecure-avoidant, insecure-resistant (ambivalent), and disorganised attachment types; cultural variations.
- Vygotsky's sociocultural theory: zone of proximal development (ZPD) and scaffolding; role of language and social interaction in cognitive development.
- Research methods in child psychology: longitudinal vs. cross-sectional designs, ethical issues (informed consent, protection from harm), and observational techniques.
Exam Tips & Revision Strategies
- Ensure you can apply inferential statistical tests (Spearman's rho) to correlational data
- Be prepared to discuss issues and debates (e.g., ethics, reductionism, nature-nurture) specifically within the context of biological psychology
- Practice evaluating the validity and reliability of brain-scanning techniques
- Ensure you can link biological theories to the specific contemporary studies listed in the specification
- Be ready to discuss the implications of biological findings for society (e.g., social control, drug therapy)
Common Misconceptions & Mistakes to Avoid
- Confusing correlation with causation in correlational research
- Failing to address the specific requirements of the practical investigation (e.g., Spearman's rho, descriptive statistics)
- Over-simplifying biological explanations (reductionism)
- Inadequate evaluation of brain-scanning techniques
- Misunderstanding the distinction between biological and psychodynamic explanations for aggression
Examiner Marking Points
- Structure and role of the neuron, neurotransmitters, and synaptic transmission
- Effect of recreational drugs on CNS transmission
- Brain structure and functioning (e.g., pre-frontal cortex) as an explanation for aggression
- Role of evolution and natural selection in human behaviour/aggression
- Biological explanation of aggression vs. Freud's psychodynamic explanation (id, ego, superego, unconscious, catharsis)
- Role of hormones (e.g., testosterone) in aggression
- Correlational research methods (co-variables, scatter diagrams, cause and effect issues)
- Brain-scanning techniques (CAT, PET, fMRI)