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goldfiish [28.3K]
3 years ago
12

Dr. Rajah is studying the effects of a new drug on cognitive performance. After random assignment of groups, one group takes the

drug while the other takes a placebo. Afterward, both groups do a series of timed brain teasers and are scored on performance. Dr. Rajah finds a significant difference between the two groups. Does his experiment have external validity?
Social Studies
1 answer:
Alinara [238K]3 years ago
7 0

Answer:

No

Explanation:

External validity refers to being able to apply the results of the research experiment to real life situations. Therefore based on the information provided in the question it can be said that Dr. Rajah's experiment does not have external validity. This is mainly due to the fact that brain teasers are problems that does not reflect on real world problems or events.

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When a democracy is destroyed, it will not be from enemies from without, but rather because of enemies from within" mean?
shusha [124]

It means that we are the obstructions of our country. We are blaming our own particular government, worried about individuals in the United States as a risk to vote based system, democracy.

It was said by Joseph McCarthy who was an American lawmaker who filled in as U.S. Congressperson from the province of Wisconsin from 1947 until his demise in 1957.

7 0
2 years ago
Compare and contrast southeast and northeast region
dmitriy555 [2]
The southeast and northeast areas of the United States are incredibly different in terms of their economies and cultures. This was a major reason for the Civil War. 
3 0
2 years ago
Plz help!
Paraphin [41]

Explanation:

Trade was also a boon for human interaction, bringing cross-cultural contact to a whole new level. When people first settled down into larger towns in Mesopotamia and Egypt, self-sufficiency – the idea that you had to produce absolutely everything that you wanted or needed – started to fade. A farmer could now trade grain for meat, or milk for a pot, at the local market, which was seldom too far away. Cities started to work the same way, realizing that they could acquire goods they didn't have at hand from other cities far away, where the climate and natural resources produced different things. This longer-distance trade was slow and often dangerous but was lucrative for the middlemen willing to make the journey. The first long-distance trade occurred between Mesopotamia and the Indus Valley in Pakistan around 3000 BC, historians believe. Long-distance trade in these early times was limited almost exclusively to luxury goods like spices, textiles, and precious metals. Cities that were rich in these commodities became financially rich, too, satiating the appetites of other surrounding regions for jewelry, fancy robes, and imported delicacies. It wasn't long after that trade networks crisscrossed the entire Eurasian continent, inextricably linking cultures for the first time in history. By the second millennium BC, former backwater island Cyprus had become a major Mediterranean player by ferrying its vast copper resources to the Near East and Egypt, regions wealthy due to their own natural resources such as papyrus and wool. Phoenicia, famous for its seafaring expertise, hawked its valuable cedarwood and linens dyes all over the Mediterranean. China prospered by trading jade, spices, and later, silk. Britain shared its abundance of tin.

My hands hurt now :')

Anyways Hope this helped, Have a nice day!

5 0
3 years ago
_____are responsible for the majority of serious delinquent acts.
aev [14]

Answer: (A) Lower class youth

Explanation:

 According to the given question, the lower class youth are basically responsible for various types of delinquent acts  which include the violence in the home and also in their social group, poor education and the bad school attendance. This occur due to the cause of lack of education and less interaction with the parents.

The lower youth is one of the stage in life where the child get easily influenced by other harmful things so we should always more careful about the delinquent acts.

Therefore, Option (A) is correct.

6 0
3 years ago
Hawks and owls are prairie: A: decomposers <br> B:scavengers <br> C:predators <br> D:producers
Harlamova29_29 [7]

Answer:

Predators

. . . . . . . . . . . . . . . . . .. . . . . . . .

4 0
2 years ago
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