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

Author Question: When a researcher asks the question, Have subjects been pre-selected so as to represent the extremes ... (Read 149 times)

stevenposner

  • Hero Member
  • *****
  • Posts: 608
on: Jun 20, 2018
When a researcher asks the question, Have subjects been pre-selected so as to represent the extremes on the variable of interest? she is concerned with which one of the following potential threats to internal validity?
 
  a. testing effect
  b. maturation
  c. subject selection
  d. regression effect

Question 2

A change in behavior simply as a result of earlier experience in the study is a threat to _________validity.
 
  a. internal
  b. external
  c. construct
  d. statistical


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ApricotDream

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jun 20, 2018
Answer to Question 1

d

Answer to Question 2

a


stevenposner

  • Hero Member
  • *****
  • Posts: 608
Reply #2 on: Jun 20, 2018
Thank you!


ApricotDream

  • Sr. Member
  • ****
  • Posts: 336
Reply #3 on: Jun 20, 2018
Happy to help


« previous next »
 

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Selected Drugs Suspected of Causing Cancer in Humans Selected Drugs Suspected of Causing Cancer in Humans
How to integrate trigonometric functions containing both tangent and secant (Question 2) How to integrate trigonometric functions containing both tangent and secant (Question 2)
Delta method question Delta method question
economic question economic question
Economics question Economics question
Question about Resultant of gravitational force? Question about Resultant of gravitational force?
Video: Lactation and Breast Feeding

For a complete list of videos, visit our video library