Complex sentence: Berridge developed the "incentive salience hypothesis" to addresses the "wanting" aspect of rewards--it explains the compulsive use of drugs by drug addicts even when the drug no longer produces euphoria, or the cravings experienced even after the individual has been successfully withdrawn.
Split into simpler sentences: Berridge developed the "incentive salience hypothesis" to addresses the "wanting" aspect of rewards. It explains the compulsive use of drugs by drug addicts even when the drug no longer produces euphoria, or the cravings experienced even after the individual has been successfully withdrawn.