The testing effect refers to: question 19 options: 1) losing the majority of the information you learned for the test immediately after the test 2) repeated self-testing as a way to enhance retention of information 3) writing a test in the same state that you studied the material should enhance retention 4) the emotional letdown people often experience after writing a test.

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