I've actually written an IQ test that a lot of people have taken. When researching how to put together an IQ test it became clear to me that from the beginning IQ testing was not, and never will be, a valid way to rate intelligence.
The simplest explanation is that "IQ score" is not fundamentally different than "SAT score" or "GMAT score" and is in a lot of ways worse because there are so many different interpretations and scoring methods for IQ. You can score 150 on one test but it might be scored completely differently than a test someone else takes. In other words, there is no agreed upon and copyrighted standard for IQ.
All of this type of testing really just sucks. All we really know is that IQ testing (or SATs, etc.) measures... something. And since people need to be quantified in some way, we use these scores for people-sorting. We TOTALLY overuse these scores without understanding them, and people feel great or feel horrible about their scores because of their usage (which is unavoidable) and for what it seems to say about them (which is very little).
It is hard to not feel good or bad about your score, even knowing all of this. We WANT to be rated, we want to score well and score better than others. That's human nature - just don't forget that your score will never impact what you can and can't achieve in life.
The simplest explanation is that "IQ score" is not fundamentally different than "SAT score" or "GMAT score" and is in a lot of ways worse because there are so many different interpretations and scoring methods for IQ. You can score 150 on one test but it might be scored completely differently than a test someone else takes. In other words, there is no agreed upon and copyrighted standard for IQ.
All of this type of testing really just sucks. All we really know is that IQ testing (or SATs, etc.) measures... something. And since people need to be quantified in some way, we use these scores for people-sorting. We TOTALLY overuse these scores without understanding them, and people feel great or feel horrible about their scores because of their usage (which is unavoidable) and for what it seems to say about them (which is very little).
It is hard to not feel good or bad about your score, even knowing all of this. We WANT to be rated, we want to score well and score better than others. That's human nature - just don't forget that your score will never impact what you can and can't achieve in life.