This study aimed to understand the relationship between WZT, MMTIC preference indexes and characteristics of sixteen personality types, and explain the possibility of applying the WZT as an instrument to diagnose personalities of middle school students. The subjects of the study were 800 students attending to S middle school in Gwangju City and were interviewed and investigated from April 2012 to March 2013. As measuring instruments, this study used WZT and MMTIC, a questionnaire and for the data collected, a descriptive statistics and a qualitative analysis were conducted. The results of the study were presented as follows: First, with respect to a WZT's conception category, expression, pen pressure, content reactive characteristics, ‘formal?abstract in a WZT's conception category, ‘very insufficient’ in expression, and ‘strong pen pressure’ in pen pressure, and 'people' in No. 1, 4 and 8 of reactive characteristics were most frequently found. Second, with respect to conception category in WZT, expression, pen pressure, and content reaction according to 16 personality types in MMTIC, ‘formal?abstract’ in conception category, 'very expressive' in expression, ‘medium pen pressure’ in pen pressure, and ‘geometry’ in reaction characteristics were frequently found. With respect to ESFP personality type which was the most frequently found in the 16 personality types in MMTIC, ‘formal?abstract’ in conception category, expressive’ in expression, ‘strong pen pressure’ in pen pressure, and ‘geometry’ in content reaction characteristics were most frequently found. Based on the results, it is concluded that WZT will be helpful to evaluation of personality of adolescents through analyses of relationships between conception category, expression, pen pressure, usefulness of content reaction characteristics, four preference indexes in MMTIC and 16 personality types.