Biological Approach

• What is the body-wide system of glands called?

  Endocrine system
• How do glands influence behaviour?

  By releasing chemical messengers called hormones
• What hormone does the adrenal gland release?

  Adrenaline
• What is the role of adrenaline in behaviour?

  Increases alertness during fight or flight
• What is the brain's role in behaviour?

  Centre of all conscious and unconscious thought
• What does localisation of function research reveal?

  Biological structures in the brain influence behaviour
• Which lobe is linked to rational decision-making?

  Frontal lobe
• What is the limbic system known for?

  It is the emotional centre of the brain
• What are neurotransmitters?

  Chemicals released at the synapse
• What role does serotonin play in behaviour?

  Associated with well-being and happiness
• What is dopamine linked to?

  Pleasure
• How does noradrenaline influence behaviour?

  It influences attention
• What does glutamate affect?

  Learning and memory
• What do genes influence in the brain?

  How the brain and neurons are formed
• What are genotypes?

  Genetic codes in the DNA
• What are phenotypes?

  Expression of the genotype
• What is the SERT gene associated with?

  Development of OCD
• How does the SERT gene influence behaviour?

  It influences serotonin transport
• What is linked to compulsions in OCD?

  Imbalance in serotonin transport
• What do evolutionary psychologists argue about behaviours?

  Inherited behaviours providing survival advantages are selected
• What was beneficial for male aggression in early societies?

  Protecting families and hunting
• Why were less aggressive males less likely to reproduce?

  They were less effective in survival tasks
• What traits were passed on due to male aggression?

  Highly aggressive traits