This research applied attachment theory to the study of sexual attitudes an
d behaviors in a sample of late adolescents. Four hundred and seventy heter
osexual undergraduate students completed questionnaires assessing attachmen
t (discomfort with closeness; anxiety over relationships), relationship his
tory, communication about sex, sexual self-efficacy and locus of control, a
nd attitudes to condoms. Eight weeks later, participants reported on sexual
behaviors occurring during the eight-week interval, and perceived risk of
these activities. Both discomfort with closeness and anxiety over relations
hips were associated with external locus of control for sexual outcomes, an
d with use of drugs before sexual contact. Anxiety over relationships was l
inked to unsafe sex and to negative attitudes to condoms, but discomfort wi
th closeness was associated with a more cautious approach to sexual risk-ta
king. Some results were qualified by gender differences, and by differences
between the full sample and those who were sexually active. The findings a
re discussed in terms of attachment style and its links with communication
and affect regulation.