A Psychologist Wants to Obtain a Measure of Children's Attention

Multiple Choice

A psychologist wants to obtain a measure of children's attention spans under quiet conditions. She arranges for a group of children to meet individually with a research assistant who reads each child a list of numbers and then asks the child to repeat the numbers in reverse order. A week later the children repeat this task. The psychologist finds that the scores that each child received at week one and at week two tend to be very similar. She concludes that this test has high

A) validity.
B) split-half reliability.
C) interrater reliability.
D) test-retest reliability.