Does mental stress have a significant impact on IQ test performance relative to baseline, and if so, how much?

For example, if a person takes the test while in the middle of a depressive episode, shortly after a breakup, having been recently bullied, being sleep deprived, or some other stressor, how much of an effect would that have on their test score?

Does mental stress or trauma have a significant impact on IQ test performance relative to baseline, and if so, how much?

For example, if a person is affected by abuse, bullying, neglect, or some other stressor or trauma, then how much of an effect would that have on their test score?

Does mental stress have a significant impact on IQ test performance, and if so, how much?

For example, if a person takes the test while in the middle of a depressive episode, shortly after a breakup, having been recently bullied, being sleep deprived, or some other stressor, how much of an effect would that have on their test score?

Does mental stress have a significant impact on IQ test performance relative to baseline, and if so, how much?

For example, if a person takes the test while in the middle of a depressive episode, shortly after a breakup, having been recently bullied, being sleep deprived, or some other stressor, how much of an effect would that have on their test score?

We can consider as intelligence the ability to solve all kind of problems and also we can consider IQ as what defines intelligence in a complete IQ test, being that IQ the one that would have been reached in the best possible mental state for a particular person.

The ability to solve those problems comes from that IQ and also from the mental state of the person.

Even if a person has an extremely high IQ if he has been victim to suffer all sort of bad mental states, like being in extreme depression constantly bullied and so on, his ability to solve problems is likely not going to be good, even to the point where a person with under average IQ and good mental state can in practice be as good in solving these problems practically.

Has it been identified how much the mental state of a person affects the mentioned intelligence of that person?

I'm searching for things like: "For example, this person when in an average mental state can solve problems which are achieved with 110 IQ, but with an extremely bad one it can solve problems achieved with 90 IQ, and, in general, it suffers a 30% loss in the ability to solve the problems".

Does mental stress have a significant impact on IQ test performance, and if so, how much?

For example, if a person takes the test while in the middle of a depressive episode, shortly after a breakup, having been recently bullied, being sleep deprived, or some other stressor, how much of an effect would that have on their test score?