Hi everyone. For my letter Q post in the #AtoZChallenge, I’d like to talk about personality tests and questionnaires. How valid are self-report questionnaires for personal growth? Do they have any validity in diagnosis?
The short answer to these questions is that it depends. After all, many people especially those with some knowledge of the thing being tested, will answer in such a way that they’ll get the results they want or expect. Even people who don’t know how the test works, may distort their answers because they think the test works in a certain way or because they think others want them to answer in a certain way. Or sometimes even because they don’t understand the questions.
For example, when I was eleven, I was tested with this weird sentence completion test that included open-ended questions. An example I remember clearly was the psychologist asking me “When I can’t sleep, I…”. I replied “I’ll try to sleep”. I had absolutely no idea what to say, not because I thought the psychologist wanted a particular answer but because the question was far too open-ended. Similarly, my lack of emotional awareness at the time often made me choose the middle option on rating scales. This was judged to be manipulativeness, but it wasn’t.
Like I shared before, many personality tests include a “liar scale” or validity subtest. An example on the Big Five test I got in college is “I always feel equally good”. I honestly answered with “strongly disagree” and totally thought it’d make me score high on neuroticism. Instead, that particular question and others I answered honestly got me to score above-average on the validity scale. That isn’t to say I didn’t score high on neuroticism though.
I don’t personally think it matters that many self-report questionnaires can lead to a strong confirmation bias, especially if you’re using the test for personal development only. That is, if you want to hear that you’re great, you will always be able to find validation for that. Whether lying on self-report questionnaires will help you on your journey, is another thing, but if you aren’t consciously manipulating the test, chances are there’s some truth to the result anyway. I don’t recommend relying on a test alone to determine anything about yourself, but to also always do your own research. Similarly, in clinical settings, while self-report questionnaires are somewhat useful, professionals also need to rely on observations.
A Multitude of Musings 