Note. Only the 10 or more responses from the participants were indicated.

Self-fulfilling Prophecy

Self-fulfilling prophecy refers to the phenomenon in which a person who believes in a prophecy learns to act in accordance with the prophecy, thereby bringing the prophecy to being. An example that psychologists have studied is astrology (Glick & Snyder, 1986; Eysenck and Nias, 1982; Snyder, 1984). If a person’s original personality and his/her sign matches, that tendency becomes stronger. Even if the personality and the sign do not initially match, the personality moves toward what has been indicated. In Japan, South Korea, and Taiwan, roughly half of the people feel the relationship between blood type and personality is legitimate (Cho, Suh & Ro, 2005; Kamise & Matsui, 1994 & 1995; Sato & Watanabe, 1992; Wu, Lindsted & Lee, 2005; Yamaoka, 2009). Logically, the self-fulfilling findings among astrology suggest that one’s personality would change in a direction that fits relevant as personality description – of which shown by blood type.