The files of 419 children in family foster care and kinship foster care were used in a retrospective longitudinal design study that examined their placement histories in child welfare. Significant associations were found between the number of placements on one hand, and the prevalence of attachment disorders, severity of behavioral problems, and breakdowns of new foster care placements on the other hand. It appears that a breakdown can be predicted to a certain extent, the implications of which are discussed. (Contains 1 footnote and 3 tables.)