Some of the best Captains that you fly with are those that respect your position as a FO. I have continually flown with a handful of skippers from my days of relative infancy to a later position of greater experience. They have always made me feel very comfortable in their presence and are inviting of opinion.
Alternatively there is always some arsehole who believes that the flight deck isn't a democracy and even if the FO is right, he is wrong (that old "you may be right but I'm left" expression). When you learn a little bit more about their background, their demeanour in the flight deck appears psychological. They appear relatively insecure with regards to their own position and abilities. Instead they conceal it with the "I'm the Captain" bullsh1t and all the other bloody bravado which they feel the need to exert.