SciELO - Scientific Electronic Library Online

vol.8 número2Vínculo materno-fetal: implicaciones en el desarrollo psicológico y propuesta de intervención en atención tempranaIntervención en Atención Temprana: enfoque Desde el Ámbito Familiar índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google


Escritos de Psicología (Internet)

versión On-line ISSN 1989-3809versión impresa ISSN 1138-2635


ESCOLANO-PEREZ, Elena. Intertwin birth weight discordance: its effects and their persistence in the psychological development of the lightest intrapair twin. Escritos de Psicología [online]. 2015, vol.8, n.2, pp.24-32. ISSN 1989-3809.

More twins are being born with intrapair birth weight discordances. Discordance in birth weight is a risk factor that can affect the development of twins, especially that of the lightest twin. However, few studies have analysed the possible consequences of birth weight discordance on the lightest twin beyond possible neonatal obstetric problems. Thus, little is known about the consequences of birth weight discordance on the psychological development of such babies. This article reviews the literature and summarizes the effects of birth weight discordance on the psychological development of the lightest intrapair twins compared with their heavier twin siblings and the persistence of these effects during their lifetime. The literature shows that the lightest intrapair twins obtain lower scores than their siblings in cognitive, verbal, and psychomotor skills. They are also more likely to have traits associated with the development of hyperactivity. These differences persist from childhood to youth. There is no information about adulthood. In conclusion, birth weight discordance has marked effects on the psychological development of intrapair lower weight twins, both in relation to the affected dimensions and the persistence of these effects over time. Further research is needed on designing early preventative interventions that would optimize the development of these children. This proposal is of relevance, given that the optimal development of all children is the basis of a society in continuous progress.

Palabras clave : Twins; Intertwin Birth Weight Discordance; Atypical Development; Psychological Development; Early Intervention.

        · resumen en Español     · texto en Español     · Español ( pdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons