10. The most effective way to rule out the presence of confounds in experiments is to O A measure them.
O B. ignore them.
C. let them vary.
O D. hold them constant.

How do economists measure the success, or shortcomings, of the economy?

Awaiver of the requirement for documentation of informed consent may be granted when: the investigator has no convenient place to store signed consent forms separate from the research datathe only record linking the subject and the research is the consent document and the principal risk is a breach of confidentiality. potential subjects might find some of the research questions embarrassing, personal, or intrusivethe subjects are literate in their own language; however, they do not read, write, or speak english

How do corporate finances, investor expectations and external forces influence stock prices and possibly pose a risk to investors