What percent of births in the U.S. in 2006 were to unmarried women?

The study by Sameroff and colleagues (1993) provided evidence that environmental risk factors tend to _____________

a. have separate and uniquely identifiable effects on IQ scores b. be highly variable and unstable over time c. wash out over time d. operate in a cumulative fashion on IQ scores

Which of the following refers to automatic, innate responses to stimulation?

A. mental sets B. unconditioned responses C. reflex behaviors D. conditioned responses