Psychology
Intelligence, and What the Tests Measure
The one number, the century of rising scores, and what heritable does not mean
Spearman · Flynn · Turkheimer · 3 chapters · 7 min read
The field's most robust finding and its most misread statistic, in one book.
Free to read: every chapter below is open
The Measurement and Its Meaning
- 01The Correlation That Would Not Go AwayOn the most replicated finding in psychology, and the thing it is constantly mistaken for.
- 02Three Points a DecadeOn thirty points a century, which cannot possibly be genetic.
- 03The Most Misread Statistic in PsychologyOn a word that means something quite specific and is almost never used to mean it.