How Did You Become Interested in Individual Differences in Intelligence?

i was one of the proctors at the very first talent search for mathematically precocious kids. And so that's the origin of my interest in the brain, an technologies to make brain measurements and relate that to individual differences. We designed, back at 93, with a student of mine, daniel higgins, we designed what was the first on line battery purporting to measure cognitive abilities associated with dorsal lateral pre frontal cortex.