In an overlapping generations experiment with multiple families participants can support their parents directly and thereby reduce their tax burden or rely on tax-financed old-age support. State productivity is captured by the factor with which total tax revenues are multiplied to determine...

We give an account of an overlapping-generations experiment with multiple families in which voluntary transfers can take the form of support to the elderly or grants to children. Support to the old is a purely intergenerational (intra-family) transfer, whereas grants to children also involve an...