Dr. Olena is interested in studying whether exposure to high…

Dr. Olena is interested in studying whether exposure to high frequency noises affects hearing. As a first approach, she asks participants questions about how often they listen to music through ear buds, at concerts, through stereo speakers in their cars, and at what volume levels. Which research method is she using?

Brianna is working on her graduate school research project s…

Brianna is working on her graduate school research project studying the brain’s response to pain. She finds lots of existing data on the topic and decides that the next best step would be to combine the findings of all of these studies to determine if they all really came to the same conclusions. Which statistical technique is she using?