In Europe, Canada, and the United States, what percentage of births isto single mothers?

When difficult challenges are met with a low level of skill, Csikszentmihalyi

would say that a person would experience (a) frustration (b) flow (c) boredom (d) apathy (e) happiness

If a researcher wanted to measure the socioeconomic status (SES) of her adult participants, she would need to ask them about which of the following?

a. Educational level b. Number of children c. Religion d. Ethnicity