“…In the particular case of action incompleteness (i.e., checking behaviors), people may experience inconsistent feelings that ''actions or intentions have been incompletely achieved" (Summerfeldt, Huta, & Swinson, 1998, p. 80), or feel only a weak sense of goal satisfaction. Such conflicting appraisals of one's behaviors have been related to impairments of the ability to monitor actions (Fitzgerald et al, 2005;Gehring, Himle, & Nisenson, 2000;Maltby, Tolin, Worhunsky, O'Keefe, & Kiehl, 2005;Pitman, 1987;Ursu, Stenger, Shear, Jones, & Carter, 2003). For example, Pitman (1987) proposed that compulsive behaviors may stem from a recurrent perception of a ''mismatch signal" informing one of a discrepancy between actual outcomes and intended effects; checking symptoms have been consistently connected with abnormal action-monitoring (Hajcak & Simons, 2002).…”