The purposes of this research were 1) to study public mind behavior 2) to study the factors on public mind behavior and 3) to compare the factors on public mind behavior of the secondary school students in Bangkok. The sample used in this study were 350 secondary school students in the academic year 2015 in Bangkok. The research tool was the 5-rating scale questionnaires with the reliability at the level of .976. The descriptive statistics were frequency, percentage, mean, and standard deviation. The statistics used to determine the quality of analysis tools to find the confidence were Cronbach’s alpha coefficient, T-test and F-test.