Deprivation state but not nicotine content of the cigarette affects responding by smokers on a progressive ratio task

In two experiments, we used a progressive ratio schedule to explore factors associated with smoking motivation. In study 1, smokers who had abstained for more than 8 h bar-pressed for longer to obtain puffs on a cigarette than did non-deprived smokers. Neither group, however, showed nicotine-induced...

Ausführliche Beschreibung