An important measure to decrease threats to internal validity in an experimental study is to

a. apply the intervention consistently.
b. improve the precision of measurement methods.
c. increase the sample size.
d. randomly assign subjects to study groups.


ANS: D

Nursing

You might also like to view...

The nurse is taking care of a toddler who is admitted to the hospital for the first time. Which approach should the nurse take when approaching the child?

1. Make the initial approach with the parent present. 2. Approach the without the parent present. 3. Enter the room hurriedly while talking to the child. 4. Stay outside the room while speaking to the child.

Nursing

A child is brought to the emergency department in a coma. The mother thinks the child may have ingested a poison. The nurse will assess: Standard Text: Select all that apply

1. For burns around the mouth. 2. The child's breath. 3. The child's vomitus. 4. Hair samples. 5. Blood and urine toxicology screens.

Nursing

In order to deliver the safest possible care, the nurse needs to understand what? (Select all that apply.)

1. How to perform the procedure correctly 2. Why the procedure is being performed 3. How the procedure will affect the patient 4. The cost of performing the procedure 5. The equipment needed to perform the procedure

Nursing

A 71-year-old man has presented to his nurse practitioner's clinic complaining of abdominal and flank pain and blood in his urine for the past 48 hours. Assessment reveals the man's temperature is 102°F orally

Which of the following health problems should the nurse first suspect? A) Bladder cancer B) Benign prostatic hyperplasia (BPH) C) Renal calculi D) Testicular cancer

Nursing