Neural & Hormonal Mechanisms in Aggression (OCR A-Level Psychology): Flashcards

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Neural & Hormonal Mechanisms in Aggression
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Definition of aggression

Physical or non-physical behaviour threatening/harming others or objects

Limbic system structures (3)

Hypothalamus, amygdala, hippocampus

Hypothalamus role in aggression

Produces aggression

Amygdala role in aggression

Decides if event is good or bad

Hippocampus role in aggression

Accesses memories to decide if event threatening

Frontal cortex role in aggression

Stops aggression in inappropriate situations

Serotonin role

Neurotransmitter that reduces aggression

Effect of higher serotonin levels

Less likely to be aggressive

Testosterone role

Hormone that increases aggression tendency

Testosterone release location

Adrenal glands & sex glands (testes/ovaries)

Why men more aggressive than women

Men produce more testosterone than women

Amygdalotomy effect on aggression

Reduces aggressive behaviour 33-100%

Crockett's serotonin finding

Increased serotonin reduced aggressive behaviour

Testosterone & violent inmates finding

Violent inmates have higher testosterone levels

Neural/hormonal explanation limit

Ignores social & environmental factors

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