Which of the following was a conclusion reached in the brain study of the Sisters of Notre Dame?

Which of the following was a conclusion reached in the brain study of the Sisters of Notre Dame of Mankato?a. High levels of folic acid were linked to increased symptoms of Alzheimer's disease b. "Serving" nuns showed more moderate declines in intellectual skills than "teaching" nuns c. Positive emotions in early adulthood were linked to longevity d. High levels of dopamine were linked to increased brain lateralization

-Ted Ha. no b. no c. yes d. yes Facts: Snowdon has found that the nuns who earned college degrees, taught school, and constantly challenged their minds into old age lived longer and resisted Alzheimer's disease better than the nuns who had lower levels of formal education and spent most of their time cleaning rooms and preparing food. High levels of dopamine were linked to increased brain lateralization. He found that the sisters with high folate levels showed little evidence of Alzheimer's-type damage in their brain after death.

Snowdon found that the sisters expressing negative emotions did not live as long as the sisters conveying more positive ones. He has already begun another analysis, comparing the emotional content of the nuns' early autobiographies with the ones they penned in late life, as part of the Nun Study. As mental abilities decline, his preliminary review has found, the expression of positive emotions also drops. While he suspects the whittling away of positive feelings are a consequence of the neurological changes of Alzheimer's, it is still possible that emotional states may play a role in determining cognitive function.