To test an herbal treatment for depression, 100 volunteers who suffered from mild depression were randomly divided into two groups. Each person was given a month’s supply of tea bags. For one group, the tea contained the herb mixed with a spice tea, and for the other group, the bags contained only the spice tea. Participants were not told which type of tea they had. They were asked to drink one cup of the tea per day for a month. At the end of the month, a psychologist evaluated them to determine if their mood had improved. The psychologist did not know who had the tea with the herbal ingredient added. True or false: This study is an experiment

The correct answer is True

Explanation:

Experimental studies or experiments involve the manipulation of one or more factors to prove a hypothesis or answer the main question of the study. This means in experiments, researchers intervene rather than only observe.

This occurs in the study presented because to discover the effect of an herbal treatment for depression the researchers give some participants the treatment and some only tea. This means there is an intervention in participants, and the researchers are manipulating one of the factors (number of participants that receive the treatment,) which are features of experiments.

answer; eurasia;

answer; oxygen to the brain;