People with personality disorders tend to exhibit problems with impulse control. These problems can manifest as either over-controlled or under-controlled impulses. (Under-controlled impulse control is commonly called a “lack of impulse control”. In the same manner that people with personality disorders may have problems with over- or under-controlled affective (emotional) regulation, they also tend to have problems regulating their impulses. Here, too, we can think of impulse regulation along a continuum ranging from over-control to under-control, with healthy personalities falling somewhere in the middle between these two extreme poles.