This article is just great: "Fifty psychological and psychiatric terms to avoid: a list of inaccurate, misleading, misused, ambiguous, and logically confused words and phrases".
My favourite entry is from their list of oxymorons:
"Scientific Proof. The concepts of “proof” and “confirmation” are incompatible with science, which by its very nature is provisional and self-correcting. [...] no theory in science, including psychological science, should be regarded as strictly proven. Proofs should be confined to the pages of mathematics textbooks and journals." [internal citations elided]