Yeah, I took a test as well and was clearly an introvert. However, as unfortunate as it is, I couldn’t say if everyone who responded to the poll knew for a fact by test or clear understanding. So, I had to place it as a limitation. :(
Edit: I edited the limitations to be clear that no tests were assigned to the participants in order to answer the poll. That they could have had tests or not but there was no way to tell which was which.