Aaron wants to study the association between sleep deprivation and the number of hours spent on computer every day. He is not keen to establish causation, but would like to determine whether and how the increase or decrease in one variable is associated with the increase or decrease in the other variable. Which of the following research methods is likely to be most effective for Aaron’s study?
a) experimental research
b) correlational research
c) case study
d) survey

b) correlational research

Explanation:

In psychological research, correlational research is described as one of the different types of 'non-experimental' research method whereby an experimenter or a researcher tries to measure two different variables, analyzes and understands the existing 'statistical relationship' between the given variables having no effect of an extraneous variable.

In reference to the given question, Aron's study is most likely a correlational research method.