Which of the following is true about infant brains in comparison to adult brains?
a. Infant brains have more neural connections.
b. Infant brains comprise a significantly smaller percentage of body size.
c. Infant brains have connections that are not activated by experience.
d. Infant brains have only about half the structures of adult brains.
A
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During final exams each year, Janet gets a bad case of bronchitis. The stress of final exams has done all of the following EXCEPT
a. lower Janet's immunity. b. cause her body to release substances that decrease inflammation. c. activate her body's self-protective response that will prolong infections and delay healing. d. result in a psychosomatic illness.
Failing to confirm a hypothesis
a. Proves that the hypothesis was wrong b. Means that problems could have occurred in the instrumentation of the experiment c. Means that problems could have occurred in the operationalization of variables d. All of the above
Labor begins with contractions of the muscles of the uterus
Indicate whether the statement is true or false
Among school-age children from middle- to high-SES families, insufficient dietary iron and folate predicted
A) slightly lower mental test performance. B) a loss of body fat. C) serious and prolonged physical damage. D) an increase in childhood ear infections.