We have long been told a simple story about reward: Dopamine is the "wanting" molecule that drives us toward goals, and opioids are the "liking" molecules that provide the hit of pleasure once we get ...

Here's what the latest research reveals about the psychopathic brain, reward-seeking and why biology is only part of the ...

A new study is challenging one of neuroscience’s most enduring ideas: that the brain’s reward system exists to make us feel good. Instead, researchers argue that it is built to optimize energy.