This article reviews the more recent literature that addresses the sep
aration anxiety hypothesis, i.e., the relationship between childhood s
eparation anxiety and adult panic disorder, The three major approaches
have consisted of retrospective reports of childhood anxiety obtained
from adults with panic disorder, studies of cross-generational famili
al aggregation of the two disorders, and the prospective longitudinal
study of childhood separation anxiety disorder into adulthood, The evi
dence is mixed, but the most relevant study of long-term outcome of ch
ildhood separation anxiety is consistent with the hypothesis.