Assisted reproduction versus spontaneous conception: A comparison of the developmental outcomes in twins

Lisa Kelly-Vance, Kristine S. Anthis, Howard Needelman

Research output: Contribution to journalArticle

5 Scopus citations


The use of assisted reproductive technology is increasing rapidly. Research, although sparse, has resulted in inconsistent findings as to the developmental prognosis for infants conceived by assisted reproductive techniques such as in vitro fertilization and the use of fertility drugs. In the present study, the authors compared twins who were spontaneously conceived with those who were conceived through assisted reproductive technology. The authors found differences in birth weight and gestational age. Infants conceived by assisted reproductive technology fared worse than did those who were spontaneously conceived. The authors found no differences between the groups in mental development at 24 months of age, but they found evidence of differences in physical development. Implications of the findings are discussed.

Original languageEnglish (US)
Pages (from-to)157-168
Number of pages12
JournalJournal of Genetic Psychology
Issue number2
StatePublished - Jun 2004



  • Assisted reproduction
  • Development
  • Twins

ASJC Scopus subject areas

  • Developmental and Educational Psychology
  • Clinical Psychology
  • Life-span and Life-course Studies

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