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 92 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
Excellent

Dominic

  • Member
  • Posts: 328
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Polypharmacy in older adults Polypharmacy in older adults
Nursing Research Nursing Research
Written materials can be helpful for the older adult. Written materials can be helpful for the older adult.
Rockin' In Time, 9th Edition Rockin' In Time, 9th Edition
Embryonic Period Embryonic Period
RESEARCH TECHNIQUE RESEARCH TECHNIQUE
Video: Asthma Treatment

For a complete list of videos, visit our video library