1. Body size is the best known general factor influencing interspecies differences. 2. Take a look at the general factors that must be present in each: 3. Evidence of a general factor of intelligence has been observed in non-human animals. 4. Evidence of a general factor of intelligence has also been observed in non-human animals. 5. A single general factor has been criticized as obscuring this bifurcated pattern of development. 6. Principal Component Analysis and general factor of intelligence in humans ( 40-50 % ). 7. However, Thurstone's tests of these abilities were found to produce a strong general factor . 8. In intelligence studies, there is a general factor , g, that influences all cognitive abilities. 9. The SV in turn, depends on three general factors : post-load and myocardial contractility. 10. A more general factor : If you're living a richer life, so will your family.