Also, “ever” might be a bit too long. IQs and IQ tests can change over time, so maybe you should ask “have you taken an IQ test [with constraints] in the last 10 years?”
Also, “ever” might be a bit too long. IQs and IQ tests can change over time, so maybe you should ask “have you taken an IQ test [with constraints] in the last 10 years?”