Are Developers Introverted or Extroverted? Are They Intuitive or Logical?

are they blonde or dark hair?

Mostly no hair :p

It's a survey, not a proper study so take it as it is. For example, if people actually do personality tests under supervised conditions, then maybe you get better answers. I would not be surprised to see the introversion/extroversion scale flip entirely.

I am responding having not read the entire study, but initially Tero is right. It is ultimately a survey and the results are inherently subjective. Also, we have to note that the types of people who fill the survey in, despite attempts at neutrality, may result in only the shameless extroverts completing them for self-promotion. The test would be the number picked form the neutral set and the number that returned them relative to the prevalence of introvert/extroverts in the general population of developers from studies using more objective psychometrics such as Myers-Briggs ;-)

As much as I jest about that, the point is about confounding factors and surveys like this, which still contain very useful data when taken in context, have to account for these confounding variables in any data analysis/interpretation. Otherwise, you get speculative statements. Stats just gives you data, the rest is your own imagination... rightly or wrongly :-D

...Indeed, we have to be aware that this subjectivity extends to the definitions of 'logical' and 'intuitive' definitions themselves.

Together with a number of people in the industry, I have a background (specifically a postgrad) in mathematics. I also often wear very strategic and analytical hats in the roles I go for (whilst I very much still develop software, I also work in solution and enterprise architecture roles). My view of a developer being logical has almost never aligned with what is the modal norm in the industry, especially when you look to exemplify it using the mathematical definitions of the term. Ask analysts, data scientist and some architects the same question about developers and in the main, you'd get the same answer. Developers are really not all that logical.

So I would be wary of drawing too many objective conclusions from this particular survey. This may give an insight into the developers minds that completed the survey, which in itself carries some value (specifically around managing them) but little else.

I heard this joke lately:
How can you identify an extroverted developer? He looks at your shoes while talking to you.

Using a standard MBTI model:
"Not too surprisingly, two extensive surveys have found that computer professionals are much more "introverted" than the general population."
...
"The same surveys found that 80 percent of computer professionals have a preference for thinking (T) over feeling (F) compared to 50 percent of the general population."
...
"This planned, logical bent is reinforced by computer professionals' preference for judging (J) over perceiving (P)—two-thirds of computer professionals are Js compared to about one-half of the general population."

Is that "carrier" of "career"? It seems that the developers are worrying about their careerlife. What does that "carrier" mean here?

Thanks :)

If you are interested in the subject, I just published a modest study based on actual personnality surveys. www.mindfulhacker.com/are-all-software-develope...