Herd behavior: Individuals who are under the pressure of the group and who are in concert with others in perceptual judgments and actions. Which of the following is not hereditary? ['The speech was not wonderful, but everyone applauded, and I applauded.', "I think this song is good in my heart, but I didn't expect it was really popular.", "Leather coats are popular this year. Although I'm not affluent, I still grit my teeth and bought a leather coat.", 'Since everyone agrees, I have nothing to say, I agree with everyone.']