translate English to French: Overall, a larger number of studies find that volatility tends to reduce the level of trade, but when the effect is measured, it is found to be relatively small.
1993 93-1 The Implications of Nonstationarity for the Stock-Adjustment Model Speculative Behaviour, Regime Switching and Stock Market Fundamentals Terms of Trade and Real Exchange Rates: The Canadian Evidence State Space and ARMA Models: