Question

A company claims to have created a new study pill that increases concentration and alertness. You design a research study to test whether students are better at learning new information after taking the pill. First, you post flyers around campus advertising your study. You make a list of everyone who responds to your flyer and randomly assign each student to either a pill or no pill group. You tell n = 10 participants to come to your lab at 8:00 AM. They ingest the pill before memorizing a set of 30 words. You tell the remaining n = 10 participants to come at 2:00 PM to memorize the same set of 30 words without ingesting the pill. The next day you test both groups of students to see who remembers more words.

Type of study, independent variable, dependent variable, confounding variable

Answer 1

Independent variable

As both the groups have nothing in common that is no student is in both the groups, the group can be termed independent and now as both the groups are independent of each other independent variable is under study.

If both the group had same 10 students then that would have been a dependent variable study and if randomness was not carried out then it would have been a confounding study.

Hence as everything is mentioned above properly the answer to this is independent variable.

Thank you !!!