Which literature suggests that non-parametric tests are usually less powerful than parametric ones?

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Peter Samuels

Dear Silvio,

I would start by looking at the literature on the robust use of parametric tests. This should start to answer your question.

Ette Etuk

Nonparametric statistics by Siegel.

Fred Amonya

Looking deeper, you’re wondering what to do when LLN (law of large numbers) is inapplicable. Seen that way, the notion of ’power’ associated with parametric tests is inappropriate. You would be confronting reality in the nonparametric endeavour.