biological approach

• What does the biological approach suggest about psychological phenomena?

  Everything psychological is biological first
• How does the biological approach view the mind?

  The mind lives in the brain
• How does the biological approach contrast with the cognitive approach?

  The cognitive approach separates mental processes from the brain
• What does neurochemistry refer to?

  The action of chemicals in the brain
• What role do neurotransmitters play in behavior?

  They facilitate chemical transmission in the brain
• What mental disorders are linked to neurochemical imbalances?

  OCD is linked to low serotonin levels
• How are psychological characteristics inherited?

  Like height or eye color
• What method is used to investigate genetic bases of behavior?

  Twin studies
• What do concordance rates indicate in twin studies?

  The extent twins share the same characteristic
• What is expected of identical twins regarding genetic characteristics?

  They should be 100% concordant
• How do non-identical twins differ in genetic sharing?

  They share about 50% of genes
• What is the difference between genotype and phenotype?

  Genotype is genetic makeup; phenotype is expression
• How can identical twins have different phenotypes?

  Due to different gene expressions
• What do biological psychologists believe about behavior?

  It depends on nature and nurture interaction
• Who proposed the theory of natural selection?

  Charles Darwin
• What is the main principle of natural selection?

  Genetically determined behavior enhances survival
• How does natural selection resemble a farmer's breeding process?

  Both select for desirable characteristics
• What happens to traits if an individual survives but does not reproduce?

  The traits do not remain in the gene pool
• What is the outcome of traits that enhance survival and reproduction?

  They are naturally selected