Question

A researcher is studying the effect of caffeinated drinks on the activity level of ten-year-old children. Half of the children in the study drank caffeinated soda, and half drank non caffeinated soda. Neither the research team nor the children knew which drinks had caffeine and which drinks did not. The researchers were using

Answer 1

Step-by-step explanation:

The can find out by observing the child's behaviour.

Answer 2

The researchers were using a double-blind design.

Step-by-step explanation:

If both the research team and the children didn't know which drinks they were having, it would be a double-blind since none of them knew.