There has been a growing interest among the planners and policy makers on the role played
by savings and investment in the economic development of both developed and developing
countries. Models based on theories of endogenous growth pioneered by Roemer (1986) and Lucas
(1988) predict that higher savings and investment rates can permanently raise growth rates.
More recent research (e.g., Levine and Renelt, 1992; De Long and Summers, 1993; Easterly
and Rebelo, 1993; and King and Levine, 1994), finds that the investment rate is one of the
most important determinants of economic growth. Attanasio et al. (2000) examine the dynamic relationship between economic growth, investment and savings rate, using annual time
series for a large cross-section of countries. Employing a variety of samples and econometric
techniques, they consistently find that growth Granger causes savings, although the effect appears to
be quantitatively weak. They also find that an increase in savings rate does not always
precede increase in growth (Loayza et al., 2000, p. 401).
Schmidt-Hebbel et al. (1996) review several theories on the direction of causation
between savings and growth, ranging from the classical permanent-income and life-cycle hypotheses
to the more recent and less conventional models. The newer models that emphasize slow
changing consumption habits (Carroll et al., 1995), a mixture of strong consumption habits with
uncertain incomes, valuing both consumption and wealth (Cole et al., 1992; Fershtman and Weiss, 1993; and Zou, 1993a and 1993b), broadly suggest that growth drives savings. |