In research studies, mothers are not randomly assigned to use drugs such as cocaine. This methodological problem is called
a. a sampling error.
b. attrition.
c. the placebo effect.
d. a selection factor.
d
Psychology
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The ____________ is a measurement that evaluates an infant's development from 2 to 42 months. It focuses on two areas: mental and motor abilities
a. developmental quotient c. visual-recognition memory measure b. Bayley Scales of Infant Development d. Gesell Scales of Child Development
Psychology
After repeatedly pairing the appearance of a nurse in green scrubs with the painful experience of getting a vaccination, the patient will react every time they see a nurse in green grubs enter the room. In this example, the nurse in the green scrubs is a(n)
a. conditioned response (CR). b. conditioned stimulus (CS). c. unconditioned response (UR). d. unconditioned stimulus (US).
Psychology