

* Department of Psychology Bar-Ilan University, Ramat Gan, Israel
Department of Neonatology, Shaare Zedek Medical Center, and Department of Pediatrics, Hebrew University School of Medicine, Jerusalem, Israel
Schneider Childrens Hospital and Department of Pediatrics, Sackler School of Medicine, Tel-Aviv University, Israel
Objective. To examine whether the kangaroo care (KC) intervention in premature infants affects parentchild interactions and infant development.
Methods. Seventy-three preterm infants who received KC in the neonatal intensive care unit were matched with 73 control infants who received standard incubator care for birth weight, gestational age (GA), medical severity, and demographics. At 37 weeks GA, motherinfant interaction, maternal depression, and mother perceptions were examined. At 3 months corrected age, infant temperament, maternal and paternal sensitivity, and the home environment (with the Home Observation for Measurement of the Environment [HOME]) were observed. At 6 months corrected age, cognitive development was measured with the Bayley-II and motherinfant interaction was filmed. Seven clusters of outcomes were examined at 3 time periods: at 37 weeks GA, motherinfant interaction and maternal perceptions; at 3-month, HOME mothers, HOME fathers, and infant temperament; at 6 months, cognitive development and motherinfant interaction
Results. After KC, interactions were more positive at 37 weeks GA: mothers showed more positive affect, touch, and adaptation to infant cues, and infants showed more alertness and less gaze aversion. Mothers reported less depression and perceived infants as less abnormal. At 3 months, mothers and fathers of KC infants were more sensitive and provided a better home environment. At 6 months, KC mothers were more sensitive and infants scored higher on the Bayley Mental Developmental Index (KC: mean: 96.39; controls: mean: 91.81) and the Psychomotor Developmental Index (KC: mean: 85.47; controls: mean: 80.53).
Conclusions. KC had a significant positive impact on the infants perceptual-cognitive and motor development and on the parenting process. We speculate that KC has both a direct impact on infant development by contributing to neurophysiological organization and an indirect effect by improving parental mood, perceptions, and interactive behavior.
Key Words: Kangaroo Care parent-infant interaction maternal depression fathers Bayley infant development
Abbreviations: KC, kangaroo care SD, standard deviation GA, gestational age NICU, neonatal intensive care unit CRIB, Clinical Risk Index for Babies BDI, Beck Depression Index NPI, Neonate Parental Inventory HOME, Home Observation for Measurement of the Environment ICQ, Infant Characteristic Questionnaire MDI, Mental Developmental Index PDI, Psychomotor Developmental Index MANOVA, multivariate analysis of variance
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