All of the Following Statements Are True About the Study

All of the following statements are true about the study of older college professors and older people selected from the general population EXCEPT:

A) rates of decline in the older professors versus the elderly in the general population differed as a function of the task examined
B) older professors showed less decline in simple speed tasks than did the elderly in the general population
C) older professors showed less decline in the recall of a prose passage than did elderly in the general population
D) the findings of the study suggest that a cognitive reserve explanation cannot be the entire story