Answer:
confounding variable; lowered.
Explanation:
In the field of statistical analysis, a <u>confounding variable</u> is one that influences both the independent variable and the dependent variable. When an experimented is designed, the researcher wants to study the effect the independent variable has on the dependent variable. However, if there's a third variable that can influence them, it can cause a spurious correlation.
The psychologist wanted to test the effects using the new computer program (independent variable) had in helping students learn math (dependent variable). But when she divided the group in two, separating them by gender, she introduced a third variable (confounding variable) that wasn't accounted for when designing the experiment and that can influence either variable. <u>Because of this, the internal validity of the study has been </u><u>lowered</u><u>.</u>
Whenever a research is done, you must reject or accept a null hypothesis (the one you consider is not correct) or your work hypothesis (the theory you think is must probably accurate or close to the truth) usually, when performing a research, you will not always obtain positive or statistically significant results, that validate your hypothesis. Is actually, not unusual that extremes (or extraordinary results) come out (unexpected for several reasons: incorrect size of the sample, improper selection of the subjects- a bias- lack of correct determination of the variable measured or failure to determine the type of the variable-numerical, categorical, ratio,etc-)
Positive or negative results are yet, results whether they prove or reject your hypothesis. Failing to establish a scientific hypothesis does not necessarily mean that they did something wrong, it just says that the hypothesis tested does not approach correctly to the epistemological truth (ultimately, any research is only a mere approximation to reality). Therefore, when two scientists deny sharing<em> unusual results</em>, they are acting unethically, hiding results that can mean something from a different point of view.
reference
Nicholson, R. S. (1989). On being a scientist. Science, 246(4928), 305-306.
The correct answer is: "It was unpopular with a majority of Americans and also difficult to enforce".
The 18th amendment to the US Constitution was issued in 1917 and declared a nationwide prohibition of intoxicating liquors, which banned both the production and sale of alcoholic beverages. Subsequently the Volstead Act was issued too, for the enforcement of this 18th amendment.
Although there was a decrease in alcohol consumption the enforcement of these regulations was extremely complicated, criminal organizations arose and started to sell alcohol in the black markets. Moreover, the public opinion started to reject the Prohibition in the 1920s decade. In 1932 President Franklin D. Roosevelt claimed for its derogation and in 1933 the 21st amendment to the US Contitution was passed to repeal the previous 18th amendment. It is the only time in the US history that one amendment is only issued to overrule a previous one.
Proxemics is that residents of the United States<span> like to keep more open space.</span>
