Dr. paul found that college students between the ages of 18 and 23 performed better on a cognitive task in a low-noise condition than in a high-noise condition. dr. ben wants to repeat dr. paul's study by adding age as a variable—18-23 and 65-74. he predicts an interaction between the age and noise variables. in this case, dr. ben is questioning the validity of the original study.

What was an important effect of blackstone's commentaries of the laws of england? a. people in england no longer had to pay taxes b. common law became more accessible c. judges were able to rule as they d. the rights of the accused were done away with.

When the power of authority is placed in the hands of the wealthy and influential citizens this is known as a(n) i can not do it

What was piaget's explanation as to why preschool-age children in the preoperational stage make errors on tasks requiring conservation? a) preschool children's tendency toward centration prevents them from focusing on other relevant features of a situation b) preschool children have not yet developed numerical understanding; therefore, different amounts are meaningless c) preschool children's neural-visual network is not fully matured d) preschool children have not lived long enough and accrued enough experience to know the difference between quantities