When assessed 7 years later, participants in Willis and Schaie's longitudinal intervention study performed ____ on memory, reasoning and processing-speed tasks as compared to the control group.

Question

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The question indicates that there was an intervention in Willis and Schaie's study, and the participants were assessed 7 years later. The comparison specified in the question is between the intervention group and the control group. The intervention group received cognitive training, and the study found that they performed significantly better on memory, reasoning, and processing-speed tasks than the control group when assessed 7 years later. Therefore, the best choice is B: significantly better.

When Assessed 7 Years Later, Participants in Willis and Schaie's