With the exception of trisomy 21, having an extra chromosome usually leads to

A) pregnancy loss.
B) death of the infant during the first few months of life.
C) both A and B
D) neither A nor B

C) both A and B

Psychology

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Critics of the DSM argue that normal boy behaviors, such as being rambunctious, refusing to nap, and not listening to teachers, are being pathologized

Indicate whether this statement is true or false.

Psychology

Research on lead exposure during childhood reveals that

A) middle-SES children are more likely than low-SES children to experience lead exposure. B) use of iron and zinc supplements increases lead concentration in the blood. C) persistent childhood lead exposure is linked to diabetes in adulthood. D) a stressed, disorganized home life seems to heighten lead-induced damage.

Psychology