Which is true about test-retest reliability?
a. Is not useful in situations where the variable is dynamic and changing
b. Reflects a measure of instrument accuracy
c. Requires at least 3 weeks between test and retest administration
d. Requires a correlation between the two administrations of .30 or greater
ANS: A
Test-retest reliability assumes the factor to be measured remains the same at the two testing times and that any change in the value or score is a consequence of random error.
The accuracy of an instrument is not measured by test-retest reliability.
A much higher correlation would be required to consider good test-retest reliability.
The amount of time between measurements is variable and depends on what kind of measure it is.
You might also like to view...
A client is informed that his white blood cell count is low and that he is at risk for the development of infections. The client asks, "Where do I make new white blood cells?" What is the best response by the nurse?
A) "White blood cells are produced in the plasma." B) "White blood cells are produced in the thymus gland." C) "White blood cells are produced in the lymphatic tissue." D) "White blood cells are produced in the bone marrow."
The nurse is coordinating home care for a 3-year-old girl with special care needs. Which approach provides the greatest benefit to the family of this child?
A) Asking the father for his observations on his daughter's progress B) The nurse adjusting her office schedule to be available C) Urging parents to arrange respite care whenever possible D) Monitoring the mother for depression
A 4-year-old girl who has leukemia will now be receiving palliative care. The patient's parents also have a 6-year-old son who does not visit often
The parents are worried that their son will remember his sister as a "sad, thin, child in the hospital" rather than as his playful sister. It is important for the pediatric nurse to tell the parents that: A) "Your son needs to say goodbye to his sister prior to her death; you should bring him to visit immediately." B) "Your son will have these sad memories for the rest of his life; therefore, keeping him away is a good idea." C) "Your son can handle a visit to see his sister with your help because children are emotionally strong." D) "Your son will need preparation about the change in his sister's appearance but for his own grieving process, he needs to visit her before her death."
The client who has megaloblastic anemia will usually have red blood cells that are:
a. macrocytic. c. normocytic. b. hypochromic. d. sickled.