Different Measure of Intelligence Peak at Different Ages

One potential concern with cross-sectional data is that it may be subject to cohort effects. Our findings in Experiment 2 are consistent with the possibility that people born in 1945 have unusually large vocabularies, people born in 1980 have unusually good working memory, and people born in 1990 have unusually fast processing speed. Such concerns can be mitigated by converging results from cross-sectional datasets collected at different times (Schaie, 2005). Here, we compared results derived...

 Argument Against Teacherbots

Computers can do a lot in education. Of course, books and magazines can do a lot in education. Of course, a lot of what computers do well is simply replacing books and magazines. A children's library needs a librarian. It's not a dumpster full of books. Librarians (like teachers) know what children will like and understand at different ages. They can recommend books, and buy books that are popular, so you can look at the spines of books on a bookshelf, pull out a book, and find something inte...

 The Neccessity of Selective Attention

Three decades ago, cognitive scientist Colin Martindale advanced the idea that each of us has several subselves, and he connected his idea to emerging ideas in cognitive science. Central to Martindale’s thesis were a few fairly simple ideas, such as selective attention, lateral inhibition, state-dependent memory, and cognitive dissociation. Although there are billions of neurons in our brains firing all the time, we’d never be able to put one foot in front of the other if we were unable to ig...

 Human Brain is "Conserved"

evolution conserves things that work. We have a conserved brain, with different ages for its different parts—in effect lizard at back and bottom, mammal in the middle, human at the front and top. Lizard brain to breathe and sleep, mammal brain to form packs, human brain to think it over

 Outline of the Natural Sciences Pt. II

The circulation of the blood was long since known; but the disposition of the vessels which conveyed the chyle to mix with it, and repair its losses; the existence of a gastric fluid which disposes the elements to the decomposition necessary to separate from organised matter, that portion which is proper to become assimilated with the living fluids; the changes undergone by the various parts and organs in the interval between conception and birth, and afterwards during the different ages of l...

 Man is Distinguished from Other Animals by his Imagination

Among the multitude of animals which scamper, fly, burrow and swim around us, man is the only one who is not locked into his environment. His imagination, his reason, his emotional subtlety and toughness, make it possible for him not to accept the environment, but to change it. And that series of inventions, by which man from age to age has remade his environment, is a different kind of evolution—not biological, but cultural evolution. I call that brilliant sequence of cultural peaks The Asce...