In the context of experimental studies, how does a quasi-experimental design differ from an experimental design?
A. A quasi-experimental design uses the placebo effect, while an experimental design uses the nocebo effect.
B. A quasi-experimental design uses equivalent variables at the outset of an experimental study, while an experimental design uses different and unequal variables.
C. A quasi-experimental design makes use of naturally occurring groups, while an experimental design randomly assigns subjects to groups.
D. A quasi-experimental design treats all the participants in the same manner, while an experimental design uses biased treatments.
Answer: C
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In the 1990s, insurance companies required hospital stays of 96 hours following a birth before covering medical costs.
Answer the following statement true (T) or false (F)
The conjugate reinforcement procedure is based on
a. classical conditioning. b. operant conditioning c. familiarization.d invisible displacement
The most widely-used newborn screening device is
A) amniocentesis. B) the Teratogen test. C) ultrasound. D) the Apgar test.
Today, most hospitals
A) encourage family participation, but do not allow maternal control over labor and delivery. B) do not allow family members and friends to participate in the birth. C) offer birth centers that are family-centered and homelike. D) discourage childbirth medication and delivery instruments.