Deaf infants that are taught sign language babble with their

A researcher took children into her lab and offered them as many high-sugar snacks as they wanted. She then recorded their activity level using various observational and physiological measures. She found that on all measures, high sugar intake was associated with high activity level. Which would be the best conclusion to reach from this data?

a. the sugar caused the high activity b. there is a negative correlation between sugar consumption and activity level c. there is a positive correlation between sugar consumption and activity level d. children with higher metabolisms tend to eat more sugar and have higher activity levels

In males, the onset of puberty brings

dramatic increases in testosterone and slight increases in estrogen. dramatic increases in estrogen and slight increases in testosterone. dramatic increases in both testosterone and estrogen. an increase in testosterone only.