IS PROLACTIN RELATED TO ACTIVITY AND EMOTIONAL REACTIVITY IN RATS

Recent studies have shown different relationships between hormones and personality in humans, including a relationship between prolactin lev els and impulsivity. The aim of the present work was to study the rela tionships between basal levels of prolactin and some measures of activ ity and emotional reactivity in rats. One of the most consistent resul ts showed a negative correlation between basal prolactin levels and ac tivity. This finding is in line with the serotonergic theories of impu lsive behavior and with the effects of dopamine upon activity.