“…The norm of reciprocity reduces uncertainty and ensures that if people give something, they will always receive something in return (Gouldner, 1960). Among parents and their children this is not, however, necessarily the same kind of support nor does it have to be exchanged at the same moment in time (Silverstein, Conroy, Wang, Giarrusso, & Bengtson, 2002). Research has shown that parents who give support to their children are more likely to receive help from them in return (e.g., Grundy, 2005; Klein Ikkink, Van Tilburg, & Knipscheer, 1999).…”