Authors:

If the extrovert is trying to "cheer up" the introvert - extroverts are programmed to seek social rewards! - he or she may feel like a failure if the introvert remains unmoved.

Source: www.psychologytoday.com
If the extrovert is trying to cheer up the introvert - extroverts are programmed to seek social rewards! - he or she may feel like a failure if the introvert remains unmoved.