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

Author Question: In research that is conducted over a period of time, the participants naturally get older. If the ... (Read 103 times)

mydiamond

  • Hero Member
  • *****
  • Posts: 804
on: Jun 19, 2018
In research that is conducted over a period of time, the participants naturally get older. If the researcher is not interested in the effects of age on the dependent variable, then the changes in age pose which of the following threats to the validity of the research?
 
  a. Attrition
  b. Maturation
  c. History
  d. Selection

Question 2

Longitudinal designs are to cross-sectional designs as
 
  a. participant variable designs are to time-series designs.
  b. before-after designs are to comparison-group designs.
  c. comparison-group designs are to before-after designs.
  d. historical designs are to current designs.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

olivia_paige29

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jun 19, 2018
Answer to Question 1

b

Answer to Question 2

b


mydiamond

  • Member
  • Posts: 804
Reply 2 on: Jun 19, 2018
Great answer, keep it coming :)

vickybb89

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

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?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Telomere length is related to the amount of time adults spend in leisure time activity. Source: Ada Telomere length is related to the amount of time adults spend in leisure time activity. Source: Ada
This portrait of Thomas Jefferson is considered an accurate likeness, painted when he was thirty-sev This portrait of Thomas Jefferson is considered an accurate likeness, painted when he was thirty-sev
Older people who experienced stressful events in their younger years may show personal growth and ... Older people who experienced stressful events in their younger years may show personal growth and ...
Nursing Responsibilities Related to Adverse Drug Reactions and Drug Interactions in Older Adults Nursing Responsibilities Related to Adverse Drug Reactions and Drug Interactions in Older Adults
Using a vacuum hose and a grounded test light to ground one cylinder at a time on a DIS. This works ... Using a vacuum hose and a grounded test light to ground one cylinder at a time on a DIS. This works ...
End of last glacial period End of last glacial period
Video: Labor and Childbirth - The Three Stages of Labor: Dilation, Expulsion & Placental مراحل الولادة

For a complete list of videos, visit our video library