Across countries,or across states within the United States,mean IQ correlates most strongly with what?
A)Mild winters
B)Rainfall per month
C)Good health
D)Low taxes

Question

Across countries,or across states within the United States,mean IQ correlates most strongly with what?
A)Mild winters
B)Rainfall per month
C)Good health 
D)Low taxes

Quizplus · Accepted Answer

Good health has been shown to correlate most strongly with mean IQ across countries or states within the United States. This is because better health conditions contribute to improved brain development and cognitive function.

Across Countries,or Across States Within the United States,mean IQ Correlates