How reliable are online IQ tests?

How reliable are online IQ tests?

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Online IQ tests mainly refer to automatic scoring IQ tests. And there is a high range test scored by the IQ test author. I think these tests can also be scientific. If the Wechsler Intelligence Test (WAIS) can be trusted because it has many samples, then other tests can be said to be scientific if they can provide correlations with the samples. Of course, not all intelligence tests can be strictly scientific. The scientific proof of intelligence measurement is not yet complete. In particular, I think that the current brain wave intelligence test is a pseudo-science. It is required to solve an IQ test to measure brain waves. Therefore, the IQ test itself is important.

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