3. Which socio-economic achievements do you think are more important and why?

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

well this isn't a question but if you are asking if it is true or false it is, true.

answer; observing;

answer; the miracles;