Marcella is conducting a quasi-experiment that examines how childhood abuse impacts emotional perception in adults. she would like to make a casual conclusion about her data. that means marcella'a study must meet all the following requirements to establish causality.

What words in the preamble to the constitution reflect the principle of popular sovereignty

Which of the following statements about new spain is true

How did the mountains on the oregon trail influence the timing of pioneers’ travels? a.) the pioneers wanted to avoid times when there was snow in the mountains. the pioneers wanted to spend as much time as possible enjoying the mountain scenery. b.) the pioneers crossed the mountains in late fall when the trees were bare and the views were good. c.) the pioneers were rugged people who were not impacted by the terrain they crossed at any time.