Examlex
List three methods of prenatal testing and note the advantages and limitations associated with each procedure.
Onset of Light
The moment or time when light begins or appears, often signifying the start of the day or the end of nighttime.
Conditioned Reinforcer
A stimulus that becomes reinforcing by being linked to a primary reinforcer, also referred to as a secondary reinforcer.
Primary Reinforcer
A naturally reinforcing stimulus, such as food or drink, that fulfills a basic biological need and does not require learning to become desirable.
Soothing Back Rub
A gentle and calming massage on the back designed to relieve stress and tension.
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