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alexandr402 [8]
3 years ago
8

A study followed a group of teenagers who had never smoked and tracked whether they took up smoking and how their mental health

changed. After one year, the incidence of depression among those who had taken up smoking was four times as high as it was among those who had not. Since nicotine in cigarettes changes brain chemistry, perhaps thereby affecting mood, it is likely that smoking contributes to depression in teenagers. Which of the following, if true, most strengthens the argument? (A) Participants who were depressed at the start of the study were no more likely to be smokers after one year than those who were not depressed. (B) The study did not distinguish between participants who smoked only occasionally and those who were heavy smokers. (C) Few, if any, of the participants in the study were friends or relatives of other participants. (D) Some participants entered and emerged from a period of depression within the year of the study. (E) The researchers did not track use of alcohol by the teenagers.
Social Studies
1 answer:
Zepler [3.9K]3 years ago
4 0

Answer:(A) Participants who were depressed at the start of the study were no more likely to be smokers after one year than those who were not depressed

Explanation:

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Answer:

I am in a really loud carnival. I see children throwing balls at stacked cups and others with a clown. I hear the laughing of children and the music of the carnival. I started walking down the street and I played the bean bag toss. I also went to shoot some hoops at the basketball carnival game.

Explanation:

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Recall the chapter on research methods in your text. Natural improvement, nonspecific treatment effects, and placebo effects are
Dennis_Churaev [7]

Answer:

Internal validity.

Explanation:

Internal validity is the study in which trust relationship is build between treatment and outcome. This relationship is known as <em>cause-and-effect. </em>

In this type research, the studies are based on whether the finding is questionable or not. The research which can overrule the possibility of alternative explanations of our findings is internally valid.

The threats of internal valid study are:

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3 0
3 years ago
A growing movement among economists to model phenomena such as interregional and international trade as well as the rise of citi
s344n2d4d5 [400]

Answer:

It is referred to as economic geography.

Explanation:

Economic geography is a  study of human's economic activities under varios conditions and is oftenassociated with production, location, distribution, consumption, exchange of resources, and spatial organization of economic activities across the world.

By comparing these  economist canunderstand the structure of the area's economy and its economic relationship with other areas around the world.

5 0
3 years ago
If u where 1 animal in the world what would it be and why?
Furkat [3]

Answer:

I would be a peregrine falcon.

Explanation:

Peregrine falcons are admired for their speed, and it would be so cool to fly so high!

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3 years ago
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Americans wanted to make George Washington president because he was a war hero, and they wanted to have someone trustworthy as president. George Washington helped win the war, and that proved that he was trustworthy.
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3 years ago
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