Thalia wants to study children's reactions to video games. Because she cannot study every child in America, she will choose to study
A) a very large group of children from one elementary school.
B) her own children, who are pretty normal.
C) children from New York and California.
D) a representative sample of children.
Question 2
In psychological studies, a representative sample refers to a group made up of
A) participants similar to the larger population we want to study.
B) persons who are all the same ages.
C) individuals who have volunteered.
D) members of Congress.
Playing sedentary games contributes to the childhood obesity epidemic
teaching children about some of the world’s environmental problems
This young child is pulling at the ear and acting fussy, two important signs of otitis media.
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A karyotype shows this child has three copies of chromosome 21.