Testing for stochastic dominance between distributions is an important issue in the study of asset distribution, income distribution and market efficiency. This paper applies Monte Carlo simulations to examine the size and power of some commonly used stochastic dominance tests when the...

The null distribution of the overlapping variance-ratio (OVR) test of the random-walk hypothesis is known to be downward biased and skewed to the right in small samples. As shown by Lo and MacKinlay (1989), the test under-rejects the null on the left tail seriously when the sample size is small....