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PSYCHOLOGY

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1954
Olds & Milner
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1990s
Dopamine & Addiction
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2000s
Behavioral Addictions
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2010s
Brain Disease Model
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TODAY
Recovery & Support
ADDICTION & REWARD
TOPIC 12 · PSYCHOLOGY · BRAIN & BEHAVIOUR · DOPAMINE, TOLERANCE & RECOVERY
PAGE 1 OF 5 — NOT A MORAL FAILURE
BRAIN SCIENCE
Comic illustration: brain reward pathway hijacked by addiction, showing dopamine circuits not weakness of character
YOUR BRAIN ON REWARD!
Addiction is when a person keeps using something or doing a behavior even when it causes serious harm. For a long time, people blamed addiction on weak willpower or bad choices. Scientists now know that is mostly wrong. Addiction is a brain condition that hijacks the dopamine reward system, the same circuits that help you enjoy food, friendship, and fun. Dopamine is a brain chemical that signals "that felt good, do it again." Drugs, alcohol, gambling, and even endless scrolling can flood this system so powerfully that normal pleasures start to feel flat. This is biology, not a moral failure.
⚡ DID YOU KNOW?
In 1954, researchers James Olds and Peter Milner found that rats would press a lever hundreds of times to stimulate a "pleasure center" in the brain. That discovery helped prove that reward is wired into specific brain circuits.
REWIRED!
DOPAMINE
Comic illustration: dopamine chemical messenger signaling reward and motivation in the brain
⚡ Dopamine is a brain messenger that tags rewarding experiences so you want to repeat them.
🎯 Healthy dopamine helps you learn, explore, and feel motivated by everyday joys.
NOT WEAKNESS
Comic illustration: addiction as brain illness with compassion and support, not shame or blame
💜 Addiction changes brain circuits over time, which makes stopping very hard without help.
🤝 Treating it like an illness, not a shameful secret, opens the door to real recovery.
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