Answer:
Complete counterbalancing
Explanation:
He should split them into groups of 10 or group of 6, and have play the candy crush, another read the trick and another read about the inventor.
Answer:
You need a scale with good reliability
Explanation:
Reliability is defined as the consistency of a research study or measuring test. A reliable test produces the same repeated results under the same or consistent conditions.
Since one of the criterias is to select a scale that will consistently provide objective data, on a weekly basis, for depression and change gradually only in response to the positive effects of the drug being tested. You need a scale with good reliability.
Answer:
What tactics? I don't see anything
They might not no how to use the equipment
