[roganp]

Here is the problem: If there is an actual large effect size, then you can detect this in small samples. However, the opposite is not true. In a small sample, spurious large effects are MORE likely, not less likely (outliers have a greater impact in a small sample). See: http://andrewgelman.com/2017/08/16/also-holding-back-progres...

[vanderZwan]

Thank you, that is an explanation that I can actually apply to this result.