Which of the following is likely to be most adept at hearing the difference between very similar speech sounds that are not distinguished in their native language?

During which of Piaget's stages does the child learn to manipulate ideas, concrete objects, or events, as well as to use abstract ideas and hypothetical situations in solving problems?

A) Zone of proximal development B) Concrete operational C) Information processing D) Formal operational

Which of the follwoing would NOT be good advice for optimal skill learning?

a. Observe skilled models to get a good mental picture of the skill. b. Practice in front of a mirror or use a videotape to see how you are performing the skill. c. Do not think too much or use verbal instructions when initially learning the new skill. d. Learn to evaluate and analyze your own performance.