Deirdre McCloskey (an economist) has an entire book devoted to this[1]. Her article here: http://www.deirdremccloskey.com/docs/jsm.pdf covers the main argument in the book. One important point she makes is that not all fields misuse p-values and statistical significance. In physics significance is almost always used appropriately, while in social sciences (including economics) statistical significance is often conflated with actual significance.

[1]: http://www.amazon.com/The-Cult-Statistical-Significance-Econ...