Get to know people. Talk to them at lunch time, or offer to help on their project when they are stuck, and ask for help on your project when your stuck.
The latter is especially helpful for differentiating between people who talk a good game and actually know what they are talking about.
Practice not assuming anything about someone based on their appearances. Learn to listen uncritically so that you can hear the insights they bring to the table. I know some folks who are genius level smart and have a horrible time trying to express themselves. I've often suspected it was because they think about things so differently that it is hard for them to translate how they think about something into concepts "normal" people understand.
The latter is especially helpful for differentiating between people who talk a good game and actually know what they are talking about.
Practice not assuming anything about someone based on their appearances. Learn to listen uncritically so that you can hear the insights they bring to the table. I know some folks who are genius level smart and have a horrible time trying to express themselves. I've often suspected it was because they think about things so differently that it is hard for them to translate how they think about something into concepts "normal" people understand.