Location, geography, financial systems, political stability, and natural resources . Rivers, iron ore and coal etc
Answer:
Treatment misidentification
Explanation:
Assistant Z's action introduces treatment misidentification during his therapy. It arises when the researcher claims a change in independent variable due to the dependent variable. Placebo effect is a way of treatment when patients are provided with fake pills.
However, it is due to a treatment that goes unnoticed by the researcher during the treatment which is closely related to the primary treatment. The researcher unconsciously distorts the result when working with patients. Thus, the researcher introduces internal invalidity due to treatment misidentification.
Since this is a high school question the answer is probably serotonin and dopamine although there are others at play.
Serotonin regulates sleep, mood, and appetite.
Dopamine is known for working in our reward and pleasure system.
I think that there are supose to be like 2,000 votes to be able to win presidney