How do hormones and neurotransmitters influence attraction and trust?
Learning Objective
To evaluate the biological foundations of human relationships.
📖 Definition / Conceptual Understanding
Chemical messengers like hormones (e.g., oxytocin, testosterone) and neurotransmitters (e.g., dopamine) transmit signals that regulate emotional and attachment behaviors.
⚙️ Mechanism / Explanation
Oxytocin promotes trust, fidelity, and pair-bonding. Dopamine is involved in the brain's reward pathway, driving the intense motivation and pleasure associated with early romantic love.
📌 Other Relevant Information
Invasive research is ethically impossible in humans, so researchers rely on animal models and brain imaging techniques.
🃏 Scenario Flip Cards
Click a card to reveal the explanation. Each scenario feeds directly into a Paper 1B practice question — use "Practice P1B" to attempt it.
Scenario: Feeling a sudden rush of excitement and motivation when seeing your new romantic partner.
Click to reveal
Dopamine Release: Excitatory neurotransmitter activity in the brain's reward center associated with romantic passion.
Click to flip back
Scenario: A mother feeling a deep, calm bond while nursing her newborn.
Click to reveal
Oxytocin: A hormone and neurotransmitter heavily involved in attachment and trust.
Click to flip back
Scenario: Men in relationships maintaining a greater physical distance from an attractive stranger.
Click to reveal
Fidelity mechanism: Oxytocin may enhance the social distance men in monogamous relationships keep from alternative mates.
Click to flip back
🔬 Common Studies
These studies feed directly into Paper 2B practice questions.
📋 What is Required
Paper 1A— Short answer (4 marks)
Describe the role of one chemical messenger in human relationships.
View mark scheme
9 marks: Accurate physiological explanation of a hormone or neurotransmitter and its specific impact on relationship behavior.
Paper 1B— Scenario response (6 marks)
Evaluate the role of biological factors in human relationships.
View mark scheme
22 marks: Comprehensive knowledge, critical evaluation of biological reductionism, and methodological considerations (e.g., fMRI limitations).
💬 ATL Discussion & Theory of Knowledge
ATL Discussion Questions
Factual
What is the difference between a hormone and a neurotransmitter?
Conceptual
How does evolutionary psychology explain the different stages of love?
Debatable
Are human relationships just a byproduct of chemical reactions?
Link to Theory of Knowledge
If love is just a chemical state, does it diminish the profound meaning humans attribute to it?
🔗 Link to Concepts
Select a concept to explore how it connects to this topic. These connections also feed into Paper 1C practice questions.
Link to Measurement
How do fMRI scans objectively measure the subjective feeling of love?
🧠 Quick Quiz
Which chemical messenger is primarily associated with promoting trust and pair-bonding?
The brain's reward pathway, which drives motivation and pleasure, is heavily influenced by which neurotransmitter?
Chemical messengers like hormones and neurotransmitters transmit signals that regulate which types of human behaviors?
Ready to test yourself?
View model answers for guidance, or jump straight into a practice question with AI marking.