People tend to be self-conscious of the way they are perceived by others and will try to avoid any situations where their self-image (everything from intelligen

People tend to be self-conscious of the way they are perceived by others and will try to avoid any situations where their self-image (everything from intelligence to physical aesthetics / beauty) can be harmed or their negative self-views (worries) can be re-validated... Especially when alternatives are available. Video: everything from your voice, to your intelligence, to your looks will be perceived by others. Voice: looks are out. Text: none of the above (relatively; you can still make yourself look quiet stupid with bad grammar). Psychological explanations dealing with egos (the self) are always 100% valid when dealing with humans. It's not about video quality here.