Children from unwanted pregnancies in Prague, Czech Republic revisited at age thirty.

The results of the fourth wave of the Prague Study of subjects born of unwanted pregnancies (UP) are reported. Of these young adults, 190 were examined at age 30 together with pair-matched control subjects born of accepted pregnancies (AP). Siblings of both UP and AP subjects were also examined. As in the previous data waves the UP subjects manifest less favorable psychosocial development on average than their AP controls, although the differences have narrowed. In some respects the siblings of the UP subjects share the latter's less favorable characteristics. However, there is a gender specific nonshared late effect of unwanted pregnancy: the UP females are more frequently emotionally disturbed than their AP female controls, whereas no such difference occurs between the female siblings of the UP and AP subjects.