In the Prenatal Diagnostic Technique Amniocentesis

question 76

Multiple Choice

In the prenatal diagnostic technique amniocentesis,

• A) a needle is inserted into the umbilical cord to collect fetal blood for screening.
• B) a thin, flexible tube connected to a needle is inserted through the vagina and into the uterus to collect a tissue sample.
• C) fetal blood is collected directly from the chorionic villi near the cervix.
• D) a needle is inserted through the abdominal wall to collect amniotic fluid containing fetal cells.
• E) the procedure cannot be performed after the fifteenth week of gestation.

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Definitions:

Variable-Ratio

A reinforcement schedule in which the number of responses required for a reward varies around an average, making the reinforcement unpredictable and typically leading to high and stable response rates.

DRH

A differential reinforcement of high rates of behavior schedule where reinforcement is contingent on responses being made at or above a certain rate.

DRO

A behavioral intervention technique known as Differential Reinforcement of Other behavior, where reinforcement is delivered for any behavior other than a target behavior.

Serial Position

The tendency to recall items from the beginning and end of a list better than those in the middle.