One of the problems with Blanchard's longitudinal research on headache is

a) the lack of a control group.
b) the high rate of participant drop?out.
c) the use of ineffective pain reduction techniques.
d) the inappropriate use of headache diaries


Answer: b) the high rate of participant drop?out.

Health & Biomechanics

You might also like to view...

Describe the path of light through the eye.

• Cornea • Pupil • Aqueous humor • Lens • Vitreous humor • Retina • Coordination between external eye muscles so that both eyes move together • Correct amount of light admitted by the pupil • Correct focus of light on the retina by the lens • Optic nerve transmits sensory images to the brain

Health & Biomechanics

Which of the following is TRUE about cancer death rates since 1990?

A. Death rates from cancer are declining. B. Death rates from cancer are increasing. C. There has been no change in cancer death rates. D. There is no reliable data available on cancer death rates.

Health & Biomechanics

The Schilling test is done to diagnose ________

A) sickle-cell anemia B) pernicious anemia C) AIDS D) mononucleosis

Health & Biomechanics

Talking about and celebrating good experiences shields you from negative experiences and emotional trauma

Indicate whether the statement is true or false

Health & Biomechanics