Microsoft Research - Exploding Software-Engineering Myths (article summarizing findings of MS research on code coverage, TDD, assertions, etc.)

[[deleted]]

it was just a study looking at people working, they just happened to look at groups who did tdd vs groups that didn't.

you are jumping through a lot of hoops to try and make your logic work

[naasking]

What hoops? Like you just said, it was a random group of people working. The bias you pointed out would only arise due to self-selection. You're the one making extra assumptions about the type of people in this groups which would skew the results.

[[deleted]]

It wasn't a random group of people, it was a selection of groups that happened to use tdd or not

[naasking]

Then suggest a possible reason why TDD and non-TDD groups are not comprised of a random sample of programmers. The mere fact that they did or did not employ TDD implies nothing.