This study proposed that the perceived quality of the custodial grandparent/grandchild relationship in step families will not be interrupted by the parental separation and remarriage and that the determinants of the quality of this relationship would be similar to that associated with the grandchild/grandparent relationship in intact families. The research by Shoire and Hayslip (1988) who studied grandparenting indicates that four variables are significant in this perceived relationship (in order of magnitude): kinship position (maternal versus paternal), grand parenting style, parent/grandparent bond, and influence the grandparent has on the grandchild. There same four variables were proposed to predict the perceived quality of the custodial grandparent/grandchild relationship in step families. Grandparenting style, as defined bu Shore and Hayslip (1988), is comprises of three variables, parentlike behaviors provided, services provided, and visitation patterns. To have a continuous rather than nominal value for grandparenting style and to determine which aspect of grandparenting style is most important, these three variables, parentlike behaviors, services, and visitation were used in place of grandparenting style. Therefore, this study proposed that the following variables would predict perceived quality of the custodial grandparent/grandchild relationship: kinship position,parentlike behaviors provided, services provided, visitation patterns, parent/grandparent bond, and influence the grandparent has on the grandchild. Second, this study proposed that while some variables that predict the perceived custodial stepgrandparent/stepgrandchild relationship would correspond to the variables that predict the perceived custodial grandparent/grandchild relationship, some different variables would be important in predicting the perceived quality of the custodial stepgrandchild/stepgrandparent relationship.