> In my case, I've gone through a pretty extensive battery of tests with two separate behavioral psychologists that go beyond self-evaluation or those (largely nonsensical) questionnaires that primary care physicians have you fill out. But I agree with what you're saying. There are folks out there who've made claims to being ADD without being officially diagnosed, some in startup spaces.

Exactly - I literally just had this discussion here yesterday (https://news.ycombinator.com/item?id=5475037). ADHD is incredibly tough (read: expensive) to diagnose properly, and almost impossible to self-diagnose with any appreciable degree of confidence.

My frustration comes from the fact that people first misdiagnose themselves or their kids, or diagnose themselves through inappropriate tests, which then leads people to conclude that ADHD doesn't really exist (see randallsquared's reply).

In other words, "our [cheap] classifier model is incapable of making accurate predictions reliably; therefore the latent variable we're predicting must be imaginary", instead of "our [cheap] classifiers are incapable of making accurate predictions reliably; therefore those diagnostic models are inadequate".