Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
As it so happens, I have an INTJ friend. It's fun talking about nerdy INT things with her, and she's<br />
given me some of the most insightful advice on a project I've ever received. (I know I can always<br />
trust her to give me honest feedback without trying to water it down.) Our e-mails can get long.<br />
How Many INTJs Are There?<br />
The question of how many INTJs there are is complicated. In the first place, INTJs are the type<br />
most likely to be mistyped by the MBTI (specifically the Form M version, the current one). 35 Then<br />
too, the number of male INTJs is larger than the number of female INTJs.<br />
The MBTI manual lists six population estimates for INTJs taken from various studies. Without<br />
accounting for the effects of mistyping or sex, INTJs are estimated at:<br />
• 2.1% of the adult American population*<br />
(Sample size 3,009) 36<br />
• 2.62% of the high school American population<br />
(Sample size 9,320) 37<br />
• 1.4% of the adult UK population*<br />
(Sample size 1,634) 38<br />
• 2.05% of the high school Australian population<br />
(Sample size 3,373) 39<br />
• 1.8% of the high school New Zealand population<br />
(Sample size 993) 40<br />
• 4.3% of the high school Singapore population<br />
(Sample size 1,733;) 41<br />
*Be chary about comparing the adult populations with the high school populations. There's a long explanation<br />
revolving around the necessity of sampling similar kinds of populations for comparative purposes, in this case adult vs.<br />
high school.<br />
Percentages by Sex<br />
When we divide the total amount of INTJs up by sex, we see that the U.S. population has<br />
approximately the following percentages of males and females: 42<br />
1 – 3% female<br />
2 – 6% male<br />
2 – 4% total<br />
Percentages and Mistyping<br />
It is a curious fact that INTJs are the type most likely to be mistyped by the MBTI test. Here's how<br />
they figured this out:<br />
Form M of the MBTI was used to type a large group of people. Afterward, trained type<br />
practitioners talked to each testee to see if the MBTI results were actually correct. For some types,<br />
35 Schaubhut, Herk & Thompson, 2009<br />
36 Myers, McCaulley, Quenk & Hammer, 1998<br />
37 Myers & McCaulley, 1985 in Myers, McCaulley, Quenk & Hammer, 1998<br />
38 Kendall & McHenry, 1998 in Myers, McCaulley, Quenk & Hammer, 1998<br />
39 Macdaid, McCaulley, & Kainz, 1986 in Myers, McCaulley, Quenk & Hammer, 1998<br />
40 Bathurst, 1995 in Myers, McCaulley, Quenk & Hammer, 1998<br />
41 Lim, 1994 in Myers, McCaulley, Quenk & Hammer, 1998<br />
42 Gerdes, 2010
Change language