[Answered] The major threat to the internal validity of research on articulation problems in young children is ...

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

Author Question: The major threat to the internal validity of research on articulation problems in young children is ... (Read 158 times)

xclash

Hero Member
Posts: 681

on: Jun 20, 2018

The major threat to the internal validity of research on articulation problems in young children is

a. regression.
b. instrumentation.
c. mortality.
d. maturation.
e. selection.

Question 2

The internal validity threat that randomization eliminates in an experimental study is

a. selection bias.
c. instrumentation.
b. subject effects.
d. history.

Need homework help now?

Ask unlimited questions for free

Ask a Question

Marked as best answer by a Subject Expert

peilian

Sr. Member
Posts: 316

Reply #1 on: Jun 20, 2018

Answer to Question 1

D

Answer to Question 2

A

xclash

Hero Member
Posts: 681

Reply #2 on: Jun 20, 2018

Thank you

peilian

Sr. Member
Posts: 316

Reply #3 on: Jun 20, 2018

No problem

« previous next »

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.