This paper outlines the alternative channels through which institution
s affect growth, and studies the empirical relationship between instit
utions, investment, and growth. The empirical results indicate that (i
) free-market institutions have a positive effect on growth; (ii) econ
omic freedom affects growth through both a direct effect on total fact
or productivity and an indirect effect on investment; (iii) political
and civil liberties may stimulate investment; (iv) an important intera
ction exists between freedom and human capital investment; (v) Milton
Friedman's conjectures on the relation between political and economic
freedom are correct; (vi) promoting economic freedom is an effective p
olicy toward facilitating growth and other types of freedom. (JEL O17,
O40, P51).