Why would a study involving continuous handrail support, oxygen uptake, and heart rate in women during submaximal step treadmill exercise be quasi-experimental in design versus experimental?
a. The sample size was small.
b. Randomization was not used in sample selection.
c. The dependent variables were not manipulated.
d. The independent variables were not manipulated.
ANS: B
Feedback
A The size of the sample does not primarily affect the nature of the study design.
B The major difference between experimental and quasi-experimental designs is lack of randomization in sampling selection.
C Dependent variables or outcome variables are not manipulated.
D Independent variables (or the treatment) must be manipulated to conduct an experiment or quasi-experiment.
You might also like to view...
Mr. O is a patient on an acute medical unit of a hospital who is receiving treatment for a chronic pressure ulcer on his coccyx that has necessitated a temporary colostomy
The accompanying disturbance in his body image and activities of daily living has caused Mr. O to become depressed. During a visit by his daughter and son-in-law, the nurse brings Mr. O his scheduled medications, to which Mr. O states, "why not bring them all at once so I can end this mess.". The daughter dismisses her father's statement as simply an expression of his pessimistic demeanor. Which of the following statements most accurately underlies the response that the nurse will choose? A) Older people attempt suicide frequently but rarely succeed. B) While older adults do sometimes commit suicide, the problem is mostly an issue of younger adults. C) The patient's statement requires appropriate follow-up and should be taken seriously. D) Suicidal ideation in older adults is often a consequence of polypharmacy.
The nurse is caring for a client with dehydration. The client's blood pressure and blood volume have stabilized after several hours of hypotension
The nurse understands that the condition of the client has stabilized because of the body's regulation of: 1. Aldosterone. 2. Adrenalin. 3. Dopamine. 4. Thyroxine.
The nurse is planning an educational program on the major food groups for preschool children. Which information should the nurse possess to assist in the development of this program?
A) Number of children in the family B) Employment status of the parents C) Length of time in preschool program D) Knowledge of growth and development
A conversion factor expressed as a ratio for converting milligrams to grams is ________.
Fill in the blank(s) with the appropriate word(s).