This article analyzes the effects of public capital formation on private se
ctor performance in Spain. The analysis is conducted both at the aggregate
level and the disaggregated sectoral level. The empirical results are based
on VAR estimates using private output, employment, and investment, as well
as public investment. This approach follows the conceptual argument that t
he analysis of the effects of public capital accumulation requires the cons
ideration of dynamic feedback effects among the relevant variables. Estimat
ion results at the aggregate level indicate that public capital crowds in p
rivate inputs and affects private output positively. In particular, I peset
a invested in public capital generates in the long term 5.5 pesetas of priv
ate output. The positive effects of public capital formation can also be de
tected, although to different degrees, at the disaggregated level. The sect
or of services seems to gain the most in absolute terms. In relative terms,
however, all sectors, except for agriculture, benefit in some way. The sec
tor of services captures a disproportionate share of the benefits in terms
of private capital formation while manufacturing and construction benefit d
isproportionately in terms of employment and output. These results also imp
ly that public capital formation makes the sector of services more capital-
intensive and the manufacturing sector more labor-intensive. (C) 2001 Socie
ty for Policy Modeling. Published by Elsevier Science Inc.