On the first exam in an Introductory Psychology class, the grades are lower than Professor Mutola expected. She suspects that multitasking is to blame. She bans computers and cell phones from her class between the first and the second exam. When she compares the scores on the two exams, she finds a significant improvement on the second exam. Professor Mutola looks back over the second exam and begins to wonder if it was just an easier exam. Which threat to internal validity is she considering

Answers

Answer 1

Answer:

instrumentation

Explanation:

Internal Validity

this is the rate of knowing or certainty that a change in the dependent variable (DV) happens or occur due to manipulations. It is the rate at which an experiment is free from extraneous variables.

There are different threats to internal validity. They includes;

1. Maturation

2. History

3. Regression

4. Attrition

5. Testing

6. Instrumentation

Instrumentation threat happens due to only when the pretest and posttest are not sufficiently equivalent. That is simply when the instrument usually called the observers that was used on the posttest and pretest is not the same (differ). This method is what researchers use to test changes over time.


Related Questions

Give me one job the president and explain what it does

Answers

Answer:

The President is responsible for implementing and enforcing the laws written by Congress and, to that end, appoints the heads of the federal agencies, including the Cabinet. ... The Cabinet and independent federal agencies are responsible for the day-to-day enforcement and administration of federal laws.

Explanation:

Which statement best describes humanism?
It encourages education in math and science.
o It is a way of thinking that focuses on human needs.
It is an artistic technique that shows realistic subjects.
It requires people to practice specific religious beliefs.

Answers

Answer:

B is correct

Explanation:

Help, look at the images below, will mark brainliest to whoever gets it right !

Answers

Answer:

You should search up it on a maps or something it really works

can you give brainliest?

Explanation:

non examples for the word love

Answers

Answer:

hate , despise , envy , etc ...

A psychologist is interested in whether working memory is influenced by sleep loss. The psychologist administers a pre-test measure of working memory to a group of subjects at 8 A.M. on Day One of the study and then administers a post-test measure of working memory at 8 A.M. on Day Two of the study, after keeping the subjects awake the entire night. The psychologist wants to know whether sleep loss affects working memory. What is the statistical analysis we would perform to answer this question

Answers

Answer: independent-samples t test

Explanation:

independent-samples t test could be described as comparing two groups whom research would be carried out on them separately to determine their statistical differences.

When carrying out the study, the results are samples that are independent of each other, the outcome of this results forms the basis for the research or analysis.

This is the statistical analysis the psychologist is carrying out. They are also known as Parametric test.

help plsss quickly i really need help

Answers

I believe the answer is about half of it ^^

Answer:

About Half of it

Explanation:

third quarter or last quarter moon is also called half moon as we can see 50%of moon's illuminated surface.

The Sun emits radiation with a wide range of wavelengths that cover the entire electromagnetic spectrum. Which of the following is true about this spectrum and the human eye?

Answers

Answer:

The Sun emits radiation right across the electromagnetic spectrum, from extremely high-energy X-rays to ultra-long-wavelength radio waves, and everything in-between. The peak of this emission occurs in the visible portion of the spectrum.

Different wavelengths of light generally come from different regions of the Sun’s atmosphere or are due to particular atoms radiating at specific wavelengths (spectral emission lines). Visible light, for example, comes from the photosphere (or surface) whereas most infrared light comes from the lower chromosphere just above. Much of the high-energy UV and X-ray photons come from the Sun’s outer atmosphere (called the corona). This gives astronomers the ability to explore different solar features, constituents or processes simply by selecting a particular wavelength of light to observe. That is why NASA’s Solar Dynamics Observatory, for example, has an array of instruments that cover a wide range of wavelengths simultaneously.

Explanation:

Which of the following phrases belongs in the section labeled “A”?


Form or System Advantages Disadvantages
Unitary
A
B
Few or none consulted when making decisions.
Oligarchy
C
Decisions can be made quickly.
D
Democracy
E
F
Difficult to get an agreement.
Decisions made quickly
Overlap in government services
Less waste of tax dollars
Single political party has control

Answers

Answer:

C

Explanation:

The phrase that belong in the section labelled “A'' is : Decisions can be made quickly.

What is unitary system of government?

Unitary system of government is a system of government where controlling powers resides with the government at the centre. This means that all governments at the local level in a unitary state receive direction from the central authority.

In unitary system of government, very few people are responsible for decision making. What this means is that where more people make decisions, then it is no longer a unitary system.

Hence, the phrase that belong in the section labelled “A'' is : Decisions can be made quickly.

Learn more about unitary system of government here : https://brainly.com/question/1202726

list the five major functions of the skeletal system

Answers

Answer:

Any five functions of skeletal system are given below

1.it helps in locomotion

2.it helps us to stand erect

3.it provide internal framework

4.it helps us to bow down,stand straight ,and helps in many other activities

5.it also helps to make our body looks attractive

In my opinion

The major functions of the bones are body support, facilitation of movement, protection of internal organs, storage of minerals and fat, and hematopoiesis.
I hope it’s help:)

What was the Oka Crisis? What was one important development that led to? Explain why this was an important development

Answers

Answer:

The Oka Crisis was a land dispute between the Mohawk, the Quebec, and Canadian police.

The development of golf course in the disputed land, Kanesatake and Mohawk's burial ground led to Oka crisis.

This crisis was a significant development as it changed the decision of developing golf course on disputed land.

Explanation:

The Oka crisis was a crisis developed over a disputed land. The crisis last for 78-days, from 11th July 1990 to 26th September 1990. In March 1989, the company who was developing the golf course planned to build the course extra nine holes which included the land of Mohawk.

The development of the Oka crisis was significant as it changed the decision of developing golf course. After the Canadian army was called, the standoff ended.

Why do you think Florida has a constitutional review in its state constitution?

Answers

Answer:

The Florida Constitution establishes and describes the duties, powers, structure and function of the government of Florida and establishes the basic law of the state. It includes twelve articles

Explanation:

A ___ is a priest of a religious order such as the Franciscans.

Answers

Answer:

Dominicans

Explanation:

SOS!!! PLEASE PLEASE HELP:(((

Answers

Answer:

He allegedly flirted with a local white woman and she accused him of harrasing her. After this happen Ed he got in a racist attacked and was brutally killed.

20.

Both of his killers were said to not be guilty and lived on their lives normally. Both of them are now dead.

I hope this suffices I know it's a bit simple but I hope this answers the questions!

Write an Argumentative Essay about a Roman Emperor 100 pnt

Answers

Answer:

The Fall of the Roman Empire In the later half of the fourth century the Western Roman Empire fell after nearly a five hundred years of dominance and is still widely considered the world’s greatest superpower (Andrews). Many people attribute the crumbling of the empire to multiple different reasons, like corrupt and insane leaders to overspending and inflation. As J.B Bury said once “the fall of the roman empire was a series of contingent events. In this paper we are going to cover the three main reasons. Political and Economical problems plus problems with the military(Wood).

As Rome was facing attacks from the outside there was an even deeper problem happening from within and it was their economy. Rome’s constant war and overspending in building its empire was becoming costly. As their treasury depleted they decided to impose hard taxation to account for the new expense they were generating. Which actually caused many people who were apart of the upper class to move to the countryside to avoid the oppressive taxes(Andrews) . Another economic problem is that inflation began to occur. Marcus Aurelius increased the copper content of the silver coins and then after that there was even more severe inflation on it way(Starr 144-145). A third problem with the economy, also politically, was that there was an ever growing expansion of bureaucracy. The expansion of their government caused more and more officials to have to be paid. Not to mentions cities already were having a hard

Explanation:

Which factor puts Mexico City at a riskof acid rain? Need help now

Answers

Answer:

pollutants derived from petroleum are a major source of these compounds, which react with cloud's humidity due to their chemical nature creating acid rain

Explanation:

In a process called plucking, the rocks dragged by glaciers produce grooves and scratches in bedrock. Please select the best answer from the choices provided T F

Answers

Answer: False

Explanation:

Plucking is the process of erosion which happens when there's glaciation.

During the movement of ice and glaciers, the surrounding rock is scraped which brings about erosion.

Plucking occurs due to the fact that the stones and rocks are frozen which results in a jagged landscape which brings about erosion.

It should be noted that the rocks dragged by glaciers fo not produce grooves and scratches in bedrock as stated in the question. Therefore the correct option is False.

Why did Arab countries declare war on the newly created nation of Israel in 1948?

Answers

Answer:hatred of Israel by Arab Nations dye to the creation of Israel

Explanation:

Answer:

The Arab-Israeli War of 1948 broke out when five Arab nations invaded territory in the former Palestinian mandate immediately following the announcement of the independence of the state of Israel on May 14, 1948. ... The United Nations resolution sparked conflict between Jewish and Arab groups within Palestine.

Explanation:

hope it help

Research on tracking has found all of the following except a. less is expected of lower-track students, so their academic performance is lower. b. students in the lower tracks learn less because they are taught less. c. tracking has no real impact on student performance after elementary school. d. even students with the same test scores are put into different tracks according to their race and social class

Answers

Answer:

. c. tracking has no real impact on student performance after elementary school.

Explanation:

Tracking is a method often applied in education system, in which there is separation of students by academic potential such as observed ability, IQ, or achievement status into various categories for course or specific classes and curriculum within a school.

Those with low scoring ability are placed on lower tracks, those with average academic potentials are placed in the middle tracks, while the top performers are generally placed in higher tracks.

The higher the tracks, the better and relatively wider the subject being taught.

Hence, research on tracking has found all of the following except "tracking has no real impact on student performance after elementary school."

whitch statement best describes the mughal empire during the rain of akkbar the great

Answers

Answer:

I think I will choose d.

What term describes a citizen's right in Arkansas to introduce a potential new law to a ballot?

A. decision

B. referendum

C. responsibility

D. initiative

Answers

Answer:

d because it is their initiative to get it done.

how did the french revolution influence saint-domingue?

Answers

Answer:

Explanation:

The French Revolution had a great impact on the colony. St. Domingue by the French revolutionary government convinced one of the slave revolt leaders, Toussaint L'Ouverture, that the new French Government was committed to ending slavery.

- How do sound waves travel? What do sound waves NEED in order to travel

Answers

They travel in a wave pattern vibrations

Answer:

Sound waves are longitudinal waves. They need a medium to travel through. They cause particles of the medium to vibrate parallel to the direction of wave travel. The vibrations can travel through solids, liquids or gases.

Explanation:

This is the site I got the info from:

How sound waves travel - Properties of waves - Eduqas ... - BBChttps://www.bbc.co.uk › guides › zsxvdxs › revision

SO not my work!

I hope this helps tho!

make a list of six benefits that you get from your society​

Answers

honestly besides food and anxiety I don't know what we get but we can't write that and give it to ur teacher so..

the benefits that you get from your society are:-

• promotion of more diverse and inclusive workforces

• employment opportunities

• taxes for the development of the country

• financial security

• education/ discipline

• health care and hospitals

1. Security which is the major thing that everyone need in his life to be able to carry on his normal activities.
2. Employment
3. Acquiring knowledge about your culture and traditions.
4. Love and help from other people.

Many Indian women marriages, even today are arranged.

Answers

Answer:

What is your question about this topic or did you just want to put that out there?

Which country allows citizens to vote but only allows one political party to run for office?

Answers

Answer: I believe the answer is Cuba

3. Which of the following correctly describes an effect railroads had on cities?
1 point
A. Cities became more isolated since they were located farther away from each other.
B. Cities grew as trains brought new residents and raw materials for industry and
construction

Answers

Answer:

B. Cities grew as trains brought new residents and raw materials for industry and construction

Which of the following groups would the British place in the Ethiopian Regiment?

Select the best answer from the choices provided.
A.
captured rebel soldiers
B.
captured enslaved African Americans belonging to rebel enslavers
C.
new enslaved African Americans that arrived to U.S. shores from Ethiopia
D.
All answers are correct.

Answers

C

Explanation:

British is African Americans bc they were in the war

Question 5(Multiple Choice Worth 2 points) (08.04 LC) Whose interests did William Armory Underhill represent as a lobbyist?
O College professors
O Florida citrus growers
O Florida Crackers
O NASA astronauts​

Answers

Answer:  Florida citrus growers

Explanation: Underhill left the Justice Department to work as a lobbyist, particularly for Florida citrus concerns. He represented citrus growers on numerous issues, including the 1993 North American Free Trade Agreement.

John was good with numbers, but he wasn't sure what he wanted to study in college. His senior year in high school he had a math teacher that he thought was awesome. Mr. Roury was the first mathematician that spoke to John on his level and got him really excited about numbers. John joined the Math Club to spend more time with Mr. Roury. John went on to study math and later engineering in college and today tells his kids that he owes his career to Mr. Roury. Mr. Roury exhibited ________ power over John.

Answers

Answer:

"Referent" is the correct answer.

Explanation:

This form of motivation or strength stems from the ability of something like the person to manage and control their people as well as inspire the next generation them, is considered as Referent power.Everything just reflects the capability of one individual to persuade everyone via their effective communication as well as interactions.

Thus the above is the correct answer.

what is your favourite tv show
A. F.R.I.E.N.D.S
B. Fresh prince of bel air
C. Andi Mack ​

Answers

Answer:

C.

have a good day :)

Explanation:

Answer:

F.R.I.E.N.D.S

Explanation:

I love the show friends because it relates to how my family can be sometimes

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