Flynn Effect
The 'Flynn effect' refers to the observed rise over time in standardised intelligence test scores.
Flynns study revealed a 13.8-point increase in IQ scores between 1932 and 1978, amounting to a 0.3-point increase per year, or approximately 3 points per decade. More recently, the Flynn effect was supported by calculations of IQ score gains between 1972 and 2006.
The Flynn effect implies that an individual will likely attain a higher IQ score on an earlier version of a test than on the current version. In fact, a test will overestimate an individuals IQ score by an average of about 0.3 points per year between the year in which the test was normed and the year in which the test was administered.
Flynns study revealed a 13.8-point increase in IQ scores between 1932 and 1978, amounting to a 0.3-point increase per year, or approximately 3 points per decade. More recently, the Flynn effect was supported by calculations of IQ score gains between 1972 and 2006.
The Flynn effect implies that an individual will likely attain a higher IQ score on an earlier version of a test than on the current version. In fact, a test will overestimate an individuals IQ score by an average of about 0.3 points per year between the year in which the test was normed and the year in which the test was administered.
