When Tucker first started tying his shoe he had to think about it and move slowly. Now that he is older and has practiced tying his shoe many times, he does it without any thought. His memory for this activity has moved from to .

As nina and erin were eating lunch in the central high school student cafeteria, they were discussing the news coverage about the girls' athletic coach being arrested for selling steroids to student athletes. "i think the guy just did it because they don't pay teachers enough money," nina suggested. "i bet the guy had some other kind of drug addiction he was trying to pay for," erin countered. nina and erin's ideas about the cause of the coach's drug-selling behavior are examples of: