But if, within our own species, we don't regard differences in intelligence, reasoning ability, or self-awareness as grounds for permitting us to exploit the being with lower capacities for our own ends, how can we point to the same characteristics to justify exploiting members of other species?

BBC: EATING

These days, when talk turns to the supposed genetic differences in the intelligence of certain races, Southern Italians have disappeared from the discussion.

NEWYORKER: None of the Above

Helping people understand how to respect and appreciate our differences using gender-intelligence, I wonder about how to convey the material to help people lead successful lives living true to their core values and beliefs.

FORBES: How Facial Recognition Technology Can Be Used To Get Your Social Security Number

Previous work has offered income, education, low levels of agricultural labour (which is replaced by more mentally stimulating jobs), climate (the challenge of surviving cold weather might provoke the evolution of intelligence) and even distance from humanity's African homeland (novel environments could encourage greater intelligence) as explanations for national differences in IQ.

ECONOMIST: Disease and intelligence

" "I always thought, " Mr. Mudd continues, "that any conversation about the intelligence the briefer provided every morning should clearly articulate the differences between the three, along with the even more clearly defined separation from the fourth, non-intelligence, pillar: discuss the policy question, what we should do about the problem that's just been defined.

WSJ: Book Review: Takedown

Manipulation and language are obvious differences, but more subtle are differences in the physiology of intelligence.

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The intelligence estimate says there is no leader in Iraq who transcends sectarian differences.

NPR: This Week in Washington: Iraq Debate, Intel Estimate