Is there a difference in cognitive development between preschool singletons and twins born after intracytoplasmic sperm injection or in vitro fertilization?

Objective: To explore whether there exist differences in cognitive development between singletons and twins born after in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI).

Methods: A total of 566 children were recruited for the study, including 388 children (singletons, n=175; twins, n=213) born after IVF and 178 children (singletons, n=87; twins, n=91) born after ICSI. The cognitive development was assessed using the Chinese-Wechsler Intelligence Scale for Children (C-WISC).

The social adaptation of children born after ICSI compared with IVF-conceived children: a study from China.

We compared the social adjustment among Chinese children born after intracytoplasmic sperm injection (ICSI) vs those after in vitro fertilisation (IVF) and identify factors related to the adjustment. The social adaptation of 86 ICSI and 165 IVF conceived children of 4-6 years of age was assessed using the Infants-Junior Middle School Students' Social-Life Abilities Scale. There was no significant difference between the ICSI and IVF-conceived groups on the item of communication, self-dependence, locomotion, work skills, socialisation, self-management and total scores.