Bias in Mental Testing Quotes

“As the number of studies increases (...) the investigator is then prompted to examine the anomalous study to find out in what crucial conditions it differs from other studies yielding contrary results. Scientific investigation is the analysis of variables, not just a box score tallying how may studies are pro or con some conclusion.”
― Arthur R. Jensen, Bias in Mental Testing

“Test scores themselves are merely correlates, predictors and indicators of other socially important variables, which would not be altered in the least if tests did not exist. The problem of individual differences and group differences would not be made to disappear by abolishing tests. One cannot treat a fever by throwing away the thermometer.”
― Arthur R. Jensen, Bias in Mental Testing