Appendix A Appendix Table1

Appendix B

As indicated in Figure 2, for mothers with one pre-union child below the age of five we can observe a bi-modal shape of the duration variable. For this group of women, the intensity of conception of a first shared child attains a second peak between months 34 and 46, which corresponds to the third year after union formation for the majority of respondents. This result might manifest the ambiguous role of the age of the youngest child as outlined in section 3. On the one hand, a pre-union child that is younger at union formation may substitute for a biological child for the step-parent and hence decrease the intensity of conception. On the other hand, it may increase the intensity of conception of a first child since a young child is more likely to act as a brother or sister towards this child. Obviously, the latter result seems to outweigh the former during the interval from the 10th to 15th month, while the former effect may become relevant for months 34 to 46. At this time the youngest child will already be too old to substitute so well for a biological child of the step-parent. The argument would be that the relationship that step-parents develop with their step-children may vary in accordance with the age of the step-children and consequently childbearing plans may be revised. An alternative explanation for the occurrence of the second mode is offered in [Cherlin 1992], where it is argued that a certain time of adjustment between the child(ren) and the new partner is needed and this process may well influence the decision whether or not to have a common child in the new union. This process would then result in a conception intensity that might increase with time.

 

Appendix A Appendix Table1

Fertility in second unions in Austria: Findings from the Austrian FFS
Isabella Buber, Alexia Prskawetz
© 2000 Max-Planck-Gesellschaft ISSN 1435-9871
http://www.demographic-research.org/Volumes/Vol3/2