Examlex
Which of the following is not an example of a primary reinforcer?
Heart Rate
The number of times a heart beats per minute, an important indicator of cardiovascular health.
First Trimester Screen
A prenatal test conducted to evaluate the risk of certain chromosomal conditions in a fetus during the first trimester of pregnancy.
Ultrasound Exam
A diagnostic imaging technique using high-frequency sound waves to create images of structures inside the body.
Blood Test
A laboratory analysis performed on a blood sample to evaluate health and detect disease.
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