The aim of this study was to investigate the nature of relationships b
etween attachment style, loneliness and psychological distress. The sa
mple consisted of 407 college students (average age = 18 years) who co
mpleted two measures of attachment, the UCLA Loneliness Scale, and the
Psychiatric Symptoms Index. Results revealed that individuals who rep
orted a secure attachment style obtained lower scores of loneliness an
d psychological distress (depression, anxiety, aggressiveness, and cog
nitive problems) than the anxious/ambivalent subjects. They also repor
ted less symptoms of depression than avoidant individuals. Subjects in
the anxious/ambivalent style were more depressed, anxious, and aggres
sive compared to avoidant subjects. However, no significant difference
appeared between anxious/ambivalent and avoidant subjects on cognitiv
e problems and loneliness. Furthermore, anxious/ambivalent subjects de
scribed themselves as more depressive, anxious, and aggressive than av
oidant subjects. Multiple regression analyses showed that loneliness p
layed a moderator function in the relationship between insecure attach
ment index and cognitive problems, whereas it played a mediator functi
on in the association between secure attachment, depression, and anxie
ty.