[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 154 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?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

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.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.