“…Some family relatives of affected patients also carry the endophenotype, although not the disorder phenotype (i.e., affective symptoms) in the case of BD (Adida et al, 2012). In fact, some studies also described attention deficits in unaffected relatives of individuals with mood disorders (Bora, Yucel, & Pantelis, 2009;Brotman, Rooney, Skup, Pine, & Leibenluft, 2009;Grunebaum, Cohler, Kauffman, & Gallant, 1978;Klimes-Dougan, Ronsaville, Wiggs, & Martinez, 2006;Zalla et al, 2004). Gottesman, & Gould (2003) discussed endophenotypes and suggested five criteria that should be characteristic of a trait to qualify it as an endophenotype.…”