Some examples follow (caveat: these are generalizations based on small data-sets and each rule has exceptions. But I feel they're broadly true. Others, please support or contradict these 'rules'). 1. My non-nerdy friends are more open to physical touch, such as hugging, playful touches during laughter, comforting touches and so on. Nerdy friends seem to restrict themselves to handshakes; some find even handshakes awkward. 2. More inclined to solidarity rituals. Typical example: non-nerd enjoys sports. Nerd dismisses them as artificial constructs designed to provide conflict as entertainment, and therefore doesn't want to participate in the ritual. Another example: nerds will typically take most conversations towards arguments/debates; non-nerds will see conversation as a solidarity ritual and keep it's flow more towards participant enjoyment. 3. Larger amounts of empathy. Non-nerdy friends seem more open to non-judgmental empathy. Nerds tend to dismiss someone's pain simply because it's part of a larger pattern. Example: non-nerdy friend says the condition of disabled people in India/China is very sad. Nerdy friend: yes, India/China have large populations and therefore life is cheap; and revels in his ability to "explain it away". The conversation becomes stunted because the nerd has refused to participate in the "empathy-field" that the non-nerd wanted to generate.