Ateam of researchers wants to test the hypothesis that drinking wine makes people like jazz more. they randomly assign college students who are 21 or over to one room in which they will drink wine and listen to jazz or to another room in which they will drink water and listen to jazz. it happens that the "wine room" has a big window with nice scenery outside, while the "water room" is windowless, dark, and dingy. the most serious flaw in this experiment is that it

The most serious flaw in this experiment is that the subjects of the test are not tested in the same environment which may result in an unconsicous bias

Explanation:

When the subjects are tested in different environments there's a chance those changes in the factors may affect the result, for example, in this case, in the "water room" they will be experiencing a less pleasing moment affecting counsciously or unconsciosly the possibility of enjoyng the music, and this factor is also present in the "wine room" but in the opposite way, the setup of the room will affect the subjects in a way they more likely will enjoy the moment and therefore liking jazz music but not merely because of wine.

abraham lincoln issued the preliminary emancipation proclamation on september 22nd, 1862. it stipulated that if the southern states did not cease their rebellion by january 1st, 1863, then proclamation would go into effect.

carefully examine the map above. based on your knowledge of colonialism in africa, the area attributed to belgium on this map is most likely the democratic republic of the congo.