{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T20:49:56Z","timestamp":1787345396304,"version":"build-2736575974"},"reference-count":75,"publisher":"American Academy of Pediatrics (AAP)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2005,2,1]]},"abstract":"<jats:p>Objective. To examine whether a triplet birth per se poses a risk to the development of infants' cognitive competencies and to the mother-infant relationship.<\/jats:p>\n                  <jats:p>Methods. Twenty-three sets of triplets were matched with 23 sets of twins and 23 singleton infants (n = 138) with respect to gestational age, birth weight, and medical and demographic features. Infants with perinatal asphyxia, intraventricular hemorrhage of grade 3 or 4, periventricular leukomalacia, or central nervous system infection were excluded from the study. At 6, 12, and 24 months of age, mother-infant interaction was observed and infants' cognitive development was tested with the Bayley II test.<\/jats:p>\n                  <jats:p>Results. Mothers of triplets displayed lower levels of sensitivity at 6, 12, and 24 months and infants were less socially involved at 6 and 24 months, compared with singletons and twins. Triplets scored lower than singletons and twins on the Bayley Mental Developmental Index at 6, 12, and 24 months. A weight discordance of &amp;gt;15% was found for 15 triplet sets (65.2%). The discordant triplets showed decreased cognitive skills at 12 and 24 months, compared with their siblings, and received the lowest scores for maternal sensitivity. Hierarchical multivariate regression analysis revealed that greater medical risk at birth, multiple-birth status, lower maternal sensitivity, and reduced infant social involvement in the first 2 years were each predictive of lower cognitive outcomes at 2 years (R2 = 0.33).<\/jats:p>\n                  <jats:p>Conclusions. Triplets appear to be at higher risk for cognitive delays in the first 2 years of life, and discordant infants are at especially high risk. This delay is related in part to the difficulty of providing sensitive mothering to 3 infants at the same time. The findings may assist practitioners in guiding prenatal and postpartum parental care and management.<\/jats:p>","DOI":"10.1542\/peds.2004-1137","type":"journal-article","created":{"date-parts":[[2005,2,1]],"date-time":"2005-02-01T13:18:55Z","timestamp":1107263935000},"page":"443-452","source":"Crossref","is-referenced-by-count":47,"title":["Does a Triplet Birth Pose a Special Risk for Infant Development? 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