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Michael Jensen has been doing some research on the benefits of honesty-- you should check out his controversial research on integrity [0]. I think he'd support the idea of calling out managers who hide their opinions from you. Further, Google has done some HR research[1] that has called "psychological safety" the #1 driver of team effectiveness.
[0] http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1511274 [1] https://rework.withgoogle.com/blog/five-keys-to-a-successful...