Increasing the effective progressivity of income taxes reduces the gap between higher and lower incomes. Various tax reforms were introduced to bring about greater progressivity in the tax system. No such tax is yet imposed to support progressivity in Social Security benefits. Such linkages allow the progressivity of the suspension to be optimized. Katz was in Jones' band Tunnels with whom Goodsall also recorded on their album "Progressivity". Second, there is only limited progressivity among married workers with stay-at-home spouses. Progressivity, then, is a complex topic which does not lend itself to simple analyses.