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Vika [28.1K]
3 years ago
12

An experimental researcher selects students who had low scores on a math pre-test and high scores on a math post-test to partici

pate in a study examining the influence of a new math curriculum in an elementary school grade. What potential threat to validity exists in the experiment?
Social Studies
1 answer:
tankabanditka [31]3 years ago
4 0

Answer:

History

Explanation:

The history of the students in relation to their mathematical skills is a potential threat to validity of the experiment.

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Difference between intensive and subsistence farming​
pav-90 [236]

The given question is incomplete. The correct question should be "Find the difference between primitive subsistence farming and intensive subsistence farming". The answer is given below

Primitive Subsistence Farming

  • It is one of the earliest farming methods to be used because it utilises primitive tools and is carried out on a small-scale.
  • Primitive subsistence farming is sufficient to feed the farmer and their family. It cannot fulfill all family needs.
  • Maize, yam, potatoes and cassava are the crops grown in this type of farming
  • This kind of farming is prominent in the thickly populated areas of the monsoon regions of the south, southeast and east Asia.

Intensive Subsistence Farming

  • In this type of farming, the farmer cultivates a small plot of land using simple tools and intensive labour.
  • This type of farming is used to sell the crops and gain more profit.
  • Rice,Wheat, maize, pulses and oilseeds are the crops grown in this kind of farming
  • This type of farming is very prominent in the thickly forested areas of Amazon basin, tropical Africa, parts of Southeast Asia and Northeast India.

Learn about more types of farming

brainly.com/question/2599871

3 0
1 year ago
Jacinta, the mother of a 10-month-old baby boy, is concerned about her son’s increasing fussiness when she leaves him with his b
Brut [27]

Answer:

He is showing separation distress because his RECOGNITION memory is improving during this period.  

Explanation:

Separation distress indicated to the detachment from a figure that you love most and separation from parents, home, etc that create distress with a person. When an infant is in a developmental phase it is normal for infants about separation anxiety. At this stage, children refuse to seep alone when the mother is not there.

When separation occurs children show sadness, anxiety, and frustration. Because of separation distress, children show physical symptoms. It is the most prevalent separation anxiety disorder at the age of 12 in children. Thus Jascinta son was explore behavior that show his separation distress.

4 0
3 years ago
A research study done through surveys showing that psychology faculty at 4-year colleges are more likely to be male than female
Snowcat [4.5K]

Answer: A research study done through surveys showing that psychology faculty at 4-year colleges are more likely to be male than female would be an example of a(n) _correlational study___

Explanation:

Correlational study is one of the type of research designs, use in psychology, purposely to determine the relationship amongst naturally occurring variables, usually two or more variables. It's also used to collect information about a subject, where an experiment can't be performed.

8 0
3 years ago
What is 'Doon'?<br> please answer fast​
DerKrebs [107]

Explanation:

The Doon Valley is an unusually wide, long valley within the Sivalik Hills and the Lesser Himalayas, in the Indian states of Uttarakhand, Himachal Pradesh and Haryana. Within the valley lies the city of Dehradun, the capital of Uttarakhand state.

5 0
2 years ago
The road leading to the las vegas airport is named after which entertainer? frank sinatra.
pickupchik [31]

The road leading to the Las Vegas airport is named after which entertainer- Wayne Newton.

     In his honor, Wayne Newton Boulevard is the street that leads to Harry Reid International Airport's main terminal in Las Vegas. Wayne Newton started singing when he was young and went on to become one of Las Vegas' most well-known performers. Newton has spent more than five decades as one of Las Vegas's most well-liked entertainers, and he has a few successes to his name. His anthem Danke Schoen was prominently included in the soundtrack to Ferris Bueller's Day Off. On the Las Vegas Strip, Newton has given more than 30,000 solo performances.

To learn more about Las Vegas click here:

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#SPJ4

5 0
1 year ago
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