Why do the findings of this study have important implications for cognitive functioning in minority groups?Racism's Cognitive Toll: Subtle...

The findings of this articles have important implications
for the cognitive functions of racial minorities because they imply that racial
minorities will often have problems with cognition.  In cases where a member of a racial
minority is confronted with subtle discrimination (which may be frequent), he or she
will (the article implies) have reduced cognitive
function.

When a person has to deal with subtle
discrimination, their brain is distracted as it tries to process that discrimination. 
While this is happening, they will not be as sharp in dealing with other tasks.  If this
goes on often, the person will have a chronic problem with their cognitive function. 
This will, presumably, affect their performance in school, at work,
etc.

For this reason, the study has major implications for
cognitive function in racial minorities.