Expert knowledge in the practical aspects of life is referred to as

Research by Novick examined whether the meaning of airplane changed for U.S. students around the time of the 2001 terrorist attacks. According to this research,

a. airplane became a more prototypical example of a vehicle shortly after the attacks, but it was judged less prototypical about 4 months later. b. the number of connection weights for airplane decreased at the time of the attacks, but soon afterwards, the number of connection weights increased. c. shortly after the attacks, airplane shifted from being a prototype to becoming an exemplar. d. for experts, the meaning of airplane changed significantly; for novices, the meaning remained stable.

According to Piaget, it is not until adolescents are around ___________ years old that they are fully settled in the formal operational stage

a. 13 c. 15 b. 14 d. 16