AIM Framework glossary
Incentive Salience
Canonical definition
Incentive Salience is Kent Berridge's term for the dopamine-mediated motivational "wanting" system that drives approach behaviour, effort expenditure, and craving toward Objects, functioning independently of opioid-mediated hedonic "liking" (pleasure, satisfaction), such that wanting can intensify without corresponding increases in liking, enabling Mimetic Desire to produce intense urgency for status targets that provide minimal or declining hedonic satisfaction.
Explanation
Incentive Salience is the brain's "go get it" signal, the strength of pull toward an Object and the willingness to expend effort to obtain it. Berridge's work shows that this signal is mediated by dopamine in regions like nucleus accumbens and can be turned up or down without changing how pleasurable the outcome actually feels. Opioid systems, by contrast, mediate hedonic "liking", the enjoyment or satisfaction once the Object is obtained. Because these systems dissociate, a person can intensely "want" a status good, speculative asset, or social victory that they do not especially "like" once obtained. AIM relies on this dissociation to explain why Mimetic Desire is non-satiating: M heavily activates incentive Salience but delivers weak and short-lived liking. Status races therefore feel urgent and addictive, yet victories quickly go flat, driving further pursuit rather than resolution.
Epistemic status
Established Neuroscience.