can you help me find the research type, independent VARIABLE, DEPENDENT VARIABLE

Question

can you help me find the research type, independent VARIABLE, DEPENDENT VARIABLE ?and Confounding/Extraneous Variable

1. Jamee wants to understand the relationship between sugar consumption and ADHD symptoms. To study this relationship, Jamee divides 30 participants into three groups of ten. One group was not allowed to have sugar in their diet at all for the next month. Another group was given 500 mg of sugar each day. The third group received no change to their diet. Address the following items: Research type: IV: DV: CVs (provide 2): 2. Richard wants to study the prevalence of cell phone use in college classrooms. Richard sits outside the window of classroom CLC 104 and counts how many students are caught using their cell phones for at least five minutes during a single class meeting. Address the following items: Research type: IV: DV: CVs (provide 2): 3. A third-grade teacher, Jenny, thinks that students’ problem behaviors are reduced by the presence of soothing classical music. For an entire quarter, Jenny plays classical music throughout the school day all the while tracking how many reprimands, detentions, and referrals she provides students. Address the following items: Research type: IV: DV: CVs (provide 2):

Explanation / Answer

The dependent variable is the outcome of the study, whereas, independent variable is the variable that changes to test the effects of dependent variable.

1) In the required study, the dependent variable is the ADHD symptom and the independent variable is the sugar consumption.

2) In the required study, the dependent variable is the number of students caught and the independent variable is use of cell phones.

3) In the required study, the dependent variable is the student's problem behaviour and the independent variable is playing classical music.

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