Stupid? No. Unfamiliar? Yes. The meaning of low mean IQs in developing nations

Illiterate people’s thinking probably remains grounded in their everyday experience. When these people take a test that solely measures abstract thinking, they perform poorly. This does not make them stupid. Instead, it shows the disconnect between their natural mode of thought and the unfamiliar test content.

Hans Eysenck’s personality epidemiological research: Fishy and fraudulent

The latest scientific scandal is a re-examination of the work of Hans Eysenck, a British psychologist who was very prominent in his lifetime. One recent study ranked him as the 13th most eminent psychologist of the 20th century (Haggbloom et al., 2002). A different study ranked him as the 46th most influential psychologist of all