L. Lehtonen et al., TEMPERAMENT AND SLEEPING PATTERNS IN COLICKY INFANTS DURING THE FIRSTYEAR OF LIFE, Journal of developmental and behavioral pediatrics, 15(6), 1994, pp. 416-420
A prospective study of 59 colicky infants acid 58 age-matched controls
assessed infants' temperament at the ages of 3 and 12 months and thei
r sleeping patterns at the ages of 8 and 12 months. At age 3 months, t
he mothers regarded the colicky infants as more intense in their react
ions, less persistent, more distractible, and more negative in their m
ood. At age 12 months, mothers regarded 23% of the colicky infants to
be more difficult than average compared to 5% of controls. The mothers
regarded their colicky infants as more active and less persistent. Ho
wever, the Toddler Temperament Scale showed no difference between the
groups in any area of temperament. No significant difference was found
between the two groups in sleeping patterns. The discrepancy between
infants' actual temperament and mothers' general perception of tempera
ment may reflect the influence of infantile colic on the mother-infant
relationship.