Research Methods (2%)

Question 1

A chiropractor participating in a research project decides it will be necessary to utilize a relatively large sample. What does the chiropractor hopes to increase when utilizing a large number of subjects?
• the reliability of the outcome measurements
• the validity of the outcome measurements
• the effect size
• the likelihood of rejecting the null hypothesis

Answer 1

• the reliability of the outcome measurements

Question 2

If the forced expiratory volume in one second (FEV1) test is negative for airway obstruction in 99% of individuals without lung disease, then the measurement of FEV1 is:
• sensitive

• valid
• reliable
• specific

Answer 2

• specific

Question 3

In a randomized control trial, what is the best way for a researcher to protect against the biases associated with the investigator and patient’s knowledge of the treatment that is being received?
• randomly assign patients to the intervention group
• perform an intent-to-treat analysis of the data
• use a double-blind research design
• use a single-blind research design

Answer 3

• use a double-blind research design

Question 4

Which of the following is the best example of covert behavior?
•	blinking in response to a light
•	imitating a friend’s gesture
•	rapid eye movements while sleeping
•	remembering a pleasant experience

Answer 4

• remembering a pleasant experience