This topic contains a solution. Click here to go to the answer

Author Question: If a human observer becomes more proficient in the course of a study, the type of threat to internal ... (Read 31 times)

tatyanajohnson

  • Hero Member
  • *****
  • Posts: 569
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
Answer to Question 1

Answer: B

Answer to Question 2

Answer: C



tatyanajohnson

  • Hero Member
  • *****
  • Posts: 569
Both answers were spot on, thank you once again




 

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

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?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

For a complete list of videos, visit our video library