At Folger University, Drs

question 213

Multiple Choice

At Folger University, Drs. Chase and Sanborn are conducting an experiment on the effects of caffeine on memory. Participants are randomly assigned to a caffeine or a no-caffeine group; their recall of items on a word list is later assessed. Which alternative correctly names and identifies the variables in this experiment?

• A)word recall - control variable; caffeine - experimental variable
• B)word recall - independent variable; caffeine - dependent variable
• C)word recall - dependent variable; caffeine - independent variable
• D)word recall - experimental variable; caffeine - control variable

---

Definitions:

Enlarged Lymph Nodes

A condition where the lymph nodes increase in size, often due to infection, inflammation, or malignancy.

White Blood Cells

Cells of the immune system involved in protecting the body against both infectious disease and foreign invaders.

Health Care-associated Infection

Infections acquired by patients during the course of receiving treatment for other conditions within a healthcare setting, also known as nosocomial infections.

Chlorhexidine Wash

An antiseptic solution used for cleansing the skin to reduce the number of bacteria and prevent infection.