Which one of the following assertions is true? Galton’s notion of the normal distribution’ tells us:

A. That if your IQ score is anywhere on the distribution, then you are normal.
B. That as we consider scores increasingly higher or lower than the norm, there will be more and more people registering those scores.
C. That for any of our ‘natural gifts'(physical, temperament or intellectual) there will be an average’ amount of that feature, to which most people approximate.
D. That most people who complete a university degree will…

Flynn has shown that there has been a standard deviation increase, per generation, in the mean level of intelligence test performance for most of this country in Western society, which equates to about three IQ points per decade. He believes that such a difference has to be result of which one of the following?

A. An environmental change, because gene frequencies in populations couldn’t change so quickly.
B. Improvements in the gene pool as we evolve.
C. A statistical artefact.
D. None of the above.