This paper examines some key propositions of real business cycle theor
y using a small open-economy framework and a structural VAR methodolog
y. Identification is achieved by long-run restrictions. The main resul
ts from the Canadian economy are (i) domestic supply shocks are import
ant in explaining short-run fluctuations in output, while real interes
t rate and terms of trade changes are not; (ii) an important source of
the money-output correlation is output shocks affecting inside money
in the short run; and (iii) the presence of a causal influence of high
-powered money or demand deposits on output is not strongly supported
by the data.