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Author Question: The nurse is critiquing a research study that involves subjects undergoing chemotherapy for breast ... (Read 215 times)

Redwolflake15

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on: Jul 8, 2018
The nurse is critiquing a research study that involves subjects undergoing chemotherapy for breast cancer.
 
  Which finding would meet a criterion for inferring causality between performance of exercise and adaptive behavior of the subjects receiving chemotherapy?
  a. Adaptive behavior began before the exercise program was initiated.
  b. Adaptive behavior occurred in the control group over time.
  c. The level of adaptive behavior increased in direct proportion to an increase in the intensity of the exercise.
  d. No difference in adaptive behavior was observed between subjects in the experimental group and subjects in the control group.

Question 2

Compared with a quasi-experimental design, which of these characteristics should a nurse expect to see only in a true experimental design?
 
  a. Experimental treatment
  b. Informed consent
  c. Hypotheses
  d. Random assignment


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underwood14

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Reply #1 on: Jul 8, 2018
Answer to Question 1

ANS: C

Feedback
A A change in the dependent variable before treatment began would interfere with a cause-and-effect explanation of change.
B A change in adaptive behavior in the control (no treatment) group would interfere with a cause-and-effect explanation of change.
C Causality is supported by a clear proportional change in the dependent variable (adaptive behavior) following a clear proportional change in the independent variable (exercise).
D A lack of difference between groups would indicate that the independent variable (treatment) was not causally related to change in the dependent variable.

Answer to Question 2

ANS: D

Feedback
A Experimental treatment is present in both quasi-experimental and true experimental designs.
B Informed consent is required for all types of research involving human subjects.
C Hypotheses are included in both quasi-experimental and true experimental designs.
D Random assignment to groups is not present in a quasi-experimental study.


Redwolflake15

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Reply 2 on: Jul 8, 2018
Great answer, keep it coming :)

xiaomengxian

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Reply 3 on: Yesterday
Wow, this really help

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