Bill wanted to lose some weight before his high school reunion, so every time he didn't buy an ice cream cone, he rewarded himself by putting one dollar in his sugar bowl. This technique for rewarding sustained behavior change is known as
A) changing self-talk.
B) shaping.
C) drafting a contract.
D) reinforcement.
Answer: D
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The drug sulfacetamide (AK-Sulf, Sulster) is considered to be a topical antibiotic drug
Indicate whether the statement is true or false.
An advantage of performing HLA cross-matches using flow cytometry is that
A) the completed cross-match tubes can be stored for about a week until analysis is convenient. B) flow cytometers are considerably less expensive than fluorescent microscopes. C) viable cells are not required. D) Both T and B cell cross-matches can be performed in one tube.
All women should increase their intake of which vitamin during the month before getting pregnant?
A. vitamin D B. vitamin E C. vitamin C D. folic acid
Early studies did not show a positive effect of blood doping because
A. a significant portion of the red blood cells were destroyed during storage of the blood. B. the subject could not tolerate the additional blood. C. the measurements of exercise performance were not accurate. D. too much blood was given to the subject.