J. W. McKean

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INTRODUCTION/AIM Interest in the gut-brain axis and emerging evidence that the intestinal microbiota can influence central nervous system function has led to the hypothesis that probiotic supplementation can have a positive effect on mood and psychological symptoms such as depression and anxiety. Although several human clinical trials have investigated(More)
Suppose we are sampling from two populations which have the same continuous distribution except for a possible shift in location. For notational convenience let X1, . . . , X,~ be a random sample from F ( x ) and let Y1, • • • , Y~ be a random sample from F ( x -8). In testing hypotheses concerning 0 the robust two-sample r ank test (Wilcoxon-Mann-Whitney)(More)
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