Cognitive Connie

Let's explore Biological Psychology

Explore the biological basis of behaviour, thought, and emotion — from the body's internal clocks and sleep cycles to the hormones and neural circuits that drive hunger, stress, aggression, and sexual behaviour, and the genetic and evolutionary forces that shape who we are.

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Biological Rhythms

Discover how the body keeps time — from the suprachiasmatic nucleus and melatonin that orchestrate your 24-hour cycle to the 90-minute sleep cycle, infradian menstrual rhythms, and the health consequences of circadian disruption.

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Biological Influences on Behaviour

Understand how hormones, neurotransmitters, and neural circuits drive emotion, motivation, hunger, sexual behaviour, aggression, and stress — and what happens when these biological systems go wrong.

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Genetics & Behaviour

Explore how genes, heritability, epigenetics, and evolutionary history shape human behaviour and individual differences — from twin study findings and gene–environment interactions to the adaptive logic of the evolved mind.

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Nervous System Organisation & Neural Communication

Explore the architecture of the nervous system — CNS vs PNS, somatic and autonomic divisions, sympathetic and parasympathetic control — and the cellular mechanisms of neural signalling: neuron types, glial cells, action potentials, saltatory conduction, synaptic transmission, EPSPs/IPSPs, neurotransmitters, and reuptake.

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01

The Endocrine System, Stress & Fight-or-Flight

8 questions · ~12 min · Intermediate

Endocrine systemHormonesGlandsHypothalamusPituitaryAdrenal glandAdrenalineFight-or-flightHPA axisCortisolNegative feedback
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Play through all Biological Psychology quizzes as a guided path.

SubjectsBiological Psychology
Biological RhythmsBiological Influences on BehaviourGenetics & BehaviourNervous System Organisation & Neural CommunicationThe Endocrine System & Stress ResponseNervous System OrganisationSynaptic TransmissionEndocrine SystemThe HPA Axis & StressCircadian RhythmsSleepEpigeneticsBehavioural GeneticsNeurotransmittersSynaptic Plasticity