If you're talking about deductive reasoning, the board games "Mastermind" and the various renditions of "Clue" (classic, regular, Harry Potter, Family Guy, etc.) are good for that.

http://www.amazon.com/Pressman-Toy-3018-...3215&sr=1-1

http://www.amazon.com/Parker-Brothers-40...3300&sr=1-1

I don't know of any games that will teach research, hypothesis, tests, analysis, and conclusions.
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