Alice M. Gregory and Thomas G. O'Connor (2002) investigated
associations between sleep problems and behavior problems in children
participating in the Colorado Adoption Project. The CBCL was completed
by adoptive parents of 245 children and biological parents of 245 children
at ages 4, 7, 9, 10, 11, 12, 13, 14, and 15 years. Scores on 6 CBCL
items pertaining to sleep were summed to measure sleep problems. Although
sleep problems declined significantly with age, there was a significant
predictive correlation of .29 from CBCL sleep problems scores at age
4 to sleep problems scores in mid-adolescence. Sleep problems scores
at age 4 also predicted CBCL Anxious/Depressed, Attention Problems,
and Aggressive Behavior syndrome scores in mid-adolescence in multiple
regression equations that controlled for adoptive status, gender, and
the stability of behavioral/emotional problems. In addition to predicting
behavioral/emotional problems over long developmental periods, sleep
problems significantly correlated with concurrent CBCL syndrome scores
at ages 4 to 15. The correlation between sleep problems and Anxious/Depressed
syndrome scores increased significantly from .39 at age 4 to .52 in
mid-adolescence, whereas correlations of sleep problems with the other
syndromes did not change significantly. Because it was unclear whether
the increases in later behavioral/emotional problems among children
who had high early sleep problems scores were caused by the early sleep
problems, Gregory and O'Connor concluded that "research on the
treatment of sleep problems is needed to further elucidate the correlations
between sleep problems and other behavioral/emotional problems"
(p. 970).
Reference:
Gregory, A.M. & O'Connor, T.G. (2002). Sleep problems in childhood:
A longitudinal study of developmental change and association with behavioral
problems. Journal of the American Academy of Child and Adolescent
Psychiatry, 41, 964-971.