MRIs contain extremely strong magnets and their magnetic strength can be measured in units of

Barbara Rogoff's research using a jack-in-the-box found that as early as the first year, __________ affect(s) mental strategies

A) development of cognitive schemes B) cultural variations in social experiences C) repetition and training D) cultural variations in formal schooling

An alarming __________ percent of U.S. infants—who are not yet capable of complying with adult directives—get spanked or hit

A) 25 to 35 B) 35 to 40 C) 35 to 50 D) 50 to 60