Language development, according to Piaget, is based on what ability in young children?

William Perry has done research that shows a transition in the way college students think

They go from a staunch need to have a "right" or "wrong" answer to a more flexible and tolerant way of viewing problems as ambiguous and having multiple levels of "rightness." Perry's findings have generally persisted in the decades since they were first published. This demonstrates the principle of A) replicability. B) ruling out rival hypotheses. C) correlation vs. causation. D) extraordinary claims.

While the senses of sight and sound have begun to emerge by 20 weeks, a fetus born at this time cannot survive because

A) its brain cannot yet control breathing and body temperature. B) the billions of neurons of its brain are not yet produced. C) the cerebral cortex, the seat of human intelligence, is too large. D) the neurons of its brain have not begun forming synapses.