Animal Behavior & CognitionbioRxivPreprint
Differential acquisition of cocaine and heroin self-administration in a rat model of internalizing versus externalizing temperament
Michael A. Emery, Aram Parsegian, Sharon A. Koonse…·Huda Akil
This study compares how cocaine and heroin self-administration is acquired in rats with internalizing vs. externalizing temperament, finding drug-specific and sex-dependent differences.
DOI 10.64898/2026.04.09.717453