This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: If a human observer becomes more proficient in the course of a study, the type of threat to internal ... (Read 35 times)

tatyanajohnson

  • Hero Member
  • *****
  • Posts: 569
on: Aug 4, 2018
If a human observer becomes more proficient in the course of a study, the type of threat to internal validity is called a change in
 
  A) proficiency.
  B) instrumentation.
  C) research bias.
  D) regression to the mean.

Question 2

The concept of regression to the mean suggests
 
  A) participants with extreme scores will score more extreme on a second test.
  B) scores of participants on a second test would be the same or similar to the first test.
  C) scores of participants on a second test would be less extreme on average on a second test.
  D) None of the above


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

briseldagonzales

  • Sr. Member
  • ****
  • Posts: 303
Reply #1 on: Aug 4, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: C


tatyanajohnson

  • Hero Member
  • *****
  • Posts: 569
Reply #2 on: Aug 4, 2018
Both answers were spot on, thank you once again


briseldagonzales

  • Sr. Member
  • ****
  • Posts: 303
Reply #3 on: Aug 4, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

A human pedigree containing inbreeding. A human pedigree containing inbreeding.
This diagram shows a cross-section of a solar-type star. This diagram shows a cross-section of a solar-type star.
Hormonal Control of Development of the Internal Sex Organs Hormonal Control of Development of the Internal Sex Organs
Andean-Type Mountain Building Andean-Type Mountain Building
human vs animal hand human vs animal hand
The human metallothionein IIA gene promoter The human metallothionein IIA gene promoter
Video: Angiotensin II - kidneys, adrenal glands and dehydration

For a complete list of videos, visit our video library