Teratogens can interfere with prenatal development and harm the unborn child by:
A. creating toxins in the mother's body and being passed to the child through the amniotic fluid
B. passing from the mother's lymphatic system to the child
C. being directly mixed with the child's blood system
D. passing from the placenta into the fetus's blood vessels
Answer: D
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Smoking is negatively associated with ______.
A. both education and income B. education, but not income C. income, but not education D. neither income nor education
The ethnographic research method is most suitable for studying child-rearing practices
a. within a particular culture or society. b. by identifying the thoughts of a particular child. c. by observing daycare children's lunchtime manners. d. by identifying why children act the way that they do.
Research indicates that people categorize concepts by using:
A) classical categorization, not prototypes. B) prototypes, not classical categorization. C) both classical categorization and prototypes. D) neither classical categorization nor prototypes.
A child wants a toy that is too big to be pulled straight through the bars of her crib. She studies the toy for some time and then grabs it, turns it sideways, and fits it through the bars. This child is using:
a. primary circular reaction. b. invention of new means through mental combinations. c. secondary circular reactions. d. coordination of secondary schemes.