Week+16a+Variables+Answer+KEY

Breast Milk Antibody Fights HIV but Needs Boost, Study **Finds** []

===‍**Research question: "What would be the effect of further vaccination on the partial anti-HIV activity of breast milk antibodies?"**===

Question 1: Considering the research question quoted above, which are the independent (manipulated) and dependent variables in this study?
[|Per6MarianaR] "The indpendent variable would be the vacccination and the dependent variable is the effect it has on the anti-HIV activities of breast milk antibodies." [|Per2IsaiasH] "The independent variables would be the __variation__ of the vaccine and the dependent variables would be the antibodies in the breast-milk." [|Per2LuisL] "The Dependent variable would be the __# of vaccinations__ and the dependent would be the antiHIV antibodies in the breast milk"

//Additional comments: Let's not forget that we are talking about variables, that can have changing values. So "Antibody" is not a variable. "Amount of antibody" or "Level of antibody activity" woudl be more apropriate here. Same thing for the Independnete variable. "Vaccine" is not a vaiablr, but "giving or not giving vaccines, or, as the studnets abover suggetsed "number of vaccinations, or variation of the vaccine" would be more accurate.//

The following should not necessarily be kept constant (can you figure out why?):
the number of women they choose to study the numbers of test subjects the same.

The following variables should be kept constant:
- Amount of vaccine given (Unless this is the very variable we WANT TO TEST is restroom policy.

- The age of the babies because a 5 month-old baby may react differently to the vaccine than a 1 month-old baby. - The type of vaccination given to the person - Same body part was being tested (for example?) - Age of the women - The age of the mothers and infants - Development of the vaccines (Thank you, Alexa!) - The condition of the test subjects. EX: if they are sick, it can affect the results. (Thank you, Per2MiguelC!). -The time (the vaccine) is given. -The conditions in which they live (Thank you, Memo!)

//And allow me to generally say that ALOT of things can be made constant, or can affect the results non-intentionally. How about location of the test, tiem in the day it is being tested, the person administering the shot, The temperature in the room at the time of vaccination, and on and on..//

‍ Question 3: In the study of the effect of vaccination on breast-fed babies, what could be the control treatment of the experiment, to which all results are being compared to?
- ....babies that received a placebo vaccine (Per2IsaisH) That was my favorite, Although it is OK to just say "Treament with no vaccine given" is fine, too.

Good work, guys (and girls)!

Now, to week 17..