Miller and Weiss Asked Seven-, 10-, and 13-Year-Olds to Remember

Miller and Weiss asked seven-, 10-, and 13-year-olds to remember the locations of animals hidden behind flaps. Telling the children to pay attention to the animals and to ignore other objects behind each flap

A) was equally helpful to all three age groups.
B) was helpful only for the youngest group; the 10- and 13-year-olds did well, whether told what to ignore or not.
C) was not helpful for any of the age groups; even at 13 years of age, children have difficulty ignoring irrelevant information.
D) was most helpful for the 13-year-olds; younger children tended to have difficulty ignoring irrelevant information, even when instructed to.