Gratitude is an emotional experience in acknowledgment for a favor received from others. In Thailand, as the above maxim, the gratitude and a thought of repaying a favor are emphasized as a standard moral life. Apart from basic and desirable personalities of human, the gratitude is also considered to be an important emotional resource contributing to social stability through its reciprocal prosocial behavior between a benefactor and a recipient, for example, parent and children, teacher and student, among peers, and others (Phra Khrusrisutasophon, 2006). Thus, the gratitude is largely promoted in children and youth through both moral education in school and moral practice in a religious place (Mulder, 1997; Na Bangchang, 1993; Pattanarat et al., 2002).