Pattern I c-Fos expression in the central amygdala (CeA), basolateral amygdala (BLA), bed nucleus of the stria terminalis (BNST), lateral hypothalamus (LH), lateral septum (LS), ventral tegmental area (VTA), Edinger-Westphal nucleus (EW), and the paraventricular nucleus of hypothalamus (PVN) of adolescents and adults tested either alone or with a social partner. An asterisk (*) reflects significant age difference within the same test context, # - depicts significant difference between the two contexts within same age.