Question

read the following descriptions of hypothetical studies. Explain whether each is an experiment, non-experiment, or quasi-experiment and state why for identifying, and for explanation).

1. A coach at a high school wants to examine if reduced practice for athletes caused higher grades. She puts all of the athletes with low grades into the experimental group and reduces their practice time from 2 hours to 1 hour. She puts all of the high-achieving athletes in the control group and keeps their practice time at the normal 2 hours. The coach keeps track of their grades over the next semester. At the end of the semester, the coach compares their grades from before the change and after the change.

2.In a drug trial, patients are randomly assigned to two groups. One group receives the new drug, while the other group receives a placebo that does nothing.

3. For a class project, a student conducts interviews with people in her community in order to study attitudes toward community improvement projects in the area.

4. A researcher has developed a new scale to measure a construct. To see if his scale has higher reliability and validity than an existing one, he randomly selects people to take a survey using his scale, and an equal number of people to take a survey with the old scale.

5. To test whether phone use decreases academic success, a professor compares the grades of students who have used their phones in class to those of students who have never used their phones in class.

6.Belk Gym gives out surveys to students who use the facilities during the month of January to find out how satisfied they feel with the gym and the work out classes offered.

Answer 1

1. This is an example of This is an example of a quasi-experiment because these is no random assignment of groups but the effect of one variable on the other is being studied.

2. This is an example of an experiment because patients are assigned randomly, and there a control and an experimental group.

3. This is an example of a non-experiment study as the study is descriptive in nature.

4. This is an example of a non-experiment because the purpose of the study is to compare two scales and not to establish a causal relationship.

Please post the other questions separately as we are supposed to answer just one question or four sub parts of a question.