A(n) _______ is the joint effect of multiple independent ...

[maychende]

A(n) _______ is the joint effect of multiple independent variables on a dependent variable.
 
  a) interactio
 b) main effect
 c) correlation
 d) extraneous variable

Question 2

In an effort to devise a method for early detection of Alzheimer's disease, a researcher obtains PET scans of normal individuals and compares them to scans of people with documented symptoms of Alzheimer's disease.
 
  What sort of differences is the researcher looking for?
   a) Differences in the amount of blood flow to areas of the brain involved in memor
 b) Differences in the electrical activity of the brain as a whole
 c) Differences in the sensitivity of brain cells to radioactive markers
 d) Differences in the degree of hemispheric specialization

[trampas]

Answer to Question 1

A

Answer to Question 2

A

[maychende]

Great answer, keep it coming

[tranoy]

Thanks for the timely response, appreciate it