Judy DeLoache found that three-year-olds were better than two-year-olds at using a scale model of a room to help locate a hidden toy in the real room. After conducting a memory test in which the children had to go back to the scale model to find the toy there, DeLoache concluded that
a. memory problems for the two-year-olds provided a sufficient explanation of her findings.
b. the three-year-olds had better mental representational ability than the two-year-olds.
c. the three-year-olds were better planners than the two-year-olds.
d. the three-year-olds had longer attention spans than the two-year-olds.
B
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