Branches of Psychology - Summary Notes Ch. 1

Biopsychology

  • Focus: how the structure and function of the nervous system generate behavior.
  • Research areas include:
    • Sensory and motor systems
    • Sleep
    • Drug use and abuse
    • Ingestive behavior
    • Reproductive behavior
    • Neurodevelopment
    • Plasticity of the nervous system
    • Biological correlates of psychological disorders
  • Related perspective: Evolutionary Psychology (Biopsychology and Evolutionary Psychology) explores how evolutionary history shapes brain mechanisms and behavior.
  • Summary: Biological psychologists study the nervous system to understand the biological basis of behavior, emotions, and mental processes.

Sensation and Perception

  • Focus: both physiological aspects of sensory systems and the psychological experience of sensory information.
  • Definitions:
    • Sensation — sensory information (sights, sounds, touch, smell)
    • Perception — experience of the world influenced by attention, previous experiences, and cultural backgrounds
  • Example: an ambiguous image (duck or rabbit) demonstrates how perception can diverge even with identical sensation.
  • Significance: Perception integrates bottom-up sensory input with top-down processes like expectations and context.

Developmental Psychology

  • Studies the physical and mental attributes of aging and maturation; tracks how abilities change with growth.
  • Skills and domains typically examined:
    • Moral reasoning
    • Cognitive skills
    • Social skills
  • Relevance: Developmental trajectories inform education, parenting, and aging-related interventions.

Personality Psychology

  • Explores individual differences in patterns of thought, feeling, and behavior.
  • Five Factor Model (Big Five): 55 dimensions with general descriptors:
    • Openness
    • Conscientiousness
    • Extraversion
    • Agreeableness
    • Neuroticism
  • How it is used:
    • Scores on each dimension describe a person; high vs low scores produce opposite trait descriptions.
    • Studies focus on both conscious and unconscious thinking and identify stable personality traits across contexts.

Social Psychology

  • Studies how individuals interact and relate with others and how these interactions influence behavior.
  • Key domains:
    • Prejudice
    • Attraction
    • Interpersonal conflicts
    • Obedience
  • Relevance: explains everyday social influence, conformity, group dynamics, and social cognition.

Health Psychology

  • Branch focusing on how health is influenced by biological, psychological, and sociocultural factors.
  • Biopsychosocial model: health/illness determined by interaction of the three factors; Holistic Health emphasizes integrated approach to well-being.
  • Practical implication: informs health promotion, disease prevention, and rehabilitation strategies.

Clinical Psychology

  • Focus: diagnosis and treatment of psychological disorders and problematic patterns of behavior; involves clinical therapy and counseling.
  • Cognitive-behavioral therapy (CBT): combines attention to cognitive processes (thoughts) and behaviors to effect change; widely used evidence-based approach.

Industrial-Organizational Psychology

  • Applies psychological theories, principles, and research to work settings.
  • Key concerns:
    • Personnel management
    • Organizational structure
    • Workplace environment
  • Real-world relevance: improves hiring, training, engagement, productivity, and job satisfaction.

Sports & Exercise Psychology

  • Focus on psychological aspects related to sports and physical performance.
  • Areas include:
    • Motivation
    • Performance-related anxiety
    • General mental well-being
  • Applications: mental skills training, coping strategies, adherence to exercise programs.

Forensic Psychology

  • Branch dealing with the justice system.
  • Core responsibilities:
    • Assessment of mental competency to stand trial
    • Suggestions for sentencing and treatment
    • Eyewitness testimony assessment
  • Interdisciplinary requirement: strong understanding of the legal system.
  • Ethical considerations: ensuring impartial assessments, protecting rights, and reporting bias risks.