Validity and Reliability of Jung Typology Test™ (JTT™)

JTT™ has been validated on a test sample consisting of over 1000 respondents aged 18 to 70 years old.

Comparative Validation

Comparative validation shows the level of correlation (Pearson's correlation coefficients) between Jung Typology Profiler™ (JTT™) and either Keirsey Temperament Sorter (KTS®) or Sixteen Personality Factor (16PF®).

JTT™ vs. 16PF®

Pearson correlation coefficients whose value exceeds .50 are represented in the table.

  E-I T-F
Extraversion .76  
Utilitarian/Sensitive   0.58

JTT™ vs. KTS®

  E-I S-N T-F J-P
E-I .79      
S-N   .74    
T-F     .76  
J-P       .77

Reliability

Split-Half

Pearson correlation coefficients

E-I S-N T-F J-P
.81 .79 .80 .80

Test-Retest

Pearson correlation coefficients

Time E-I S-N T-F J-P
under one week .83 .79 .78 .81
over one week .79 .76 .76 .78

Type formula coincidence

Time under one week over one week
Formula coincidence 89% 84%