Across countries, there is a positive correlation between rates of overweight/obesity and levels of countries' economic affluence.

The reduced time that Western teenagers spend with their families is mostly due to

A) parent–child conflict. B) rebellion against their parents. C) the large amount of unstructured time available to them. D) the large amount of time they spend on cell phones and the Internet.

If Matthew understands gender stability, which of the following will he likely assume?

A) Specific activities and personal characteristics as "for girls" or "for boys" B) That he will grow up and be a daddy C) That he prefers to play with boys rather than girls D) That Mommy will still be a girl even if she wears Daddy's cap and overalls and does Daddy's job of changing the oil in the car