Question

Dr. Joseph is conducting an experiment to test the hypothesis that eating chocolate boosts mood. He randomly assigns his participants to eat no chocolate, one ounce of chocolate, or five ounces of chocolate. He discovers that people in the five-ounce condition do, in fact, report better mood than people in the other groups. Which of the four validities is most important for ensuring that Dr. Joseph is able to make a causal claim.

Answer 1

Answer: it can be inferred that chocolate boosts mood.

Explanation:

Validation

Dark Chocolates are know to contain cocoa which helps to boost "brain serotonin" levels. Taking Chocolate produces a feeling of calmness and content.

The groups that took 5 ounces of chocolate felt more happy because the more chocolate taken the better the mood.