A really biased source with an interest in the outcome.<p>I'd rather listen to an opinion of a good statistician, comparing psychology to other fields of science.<p>What Gilbert alleged implies the studies dip not provide correct steps to reproduce the conditions. This is even more damning - means the quality of studies is very low.<p>Alternatively, the whole field suffers from an extreme case of publication bias. This can be shown in number of publications that show no effect or disprove previous findings.