Ada is participating in a replication of the longitudinal study by Tomlinson-Keasey and colleagues in which she is given the same five concrete-operational tasks at five different ages. If Ada is similar to the other children who participated in this study, we can expect that she will __________.

A. get gradually better with age at some tasks but not others
B. show a dramatic gain in task performance between ages 7 and 8 on all tasks
C. show gradual gains across age on all tasks between 6 and 9 years of age
D. show performance that is quite similar across tasks at each age, indicating that a single underlying ability was changing with age


Answer: C

Psychology

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