What is the current total fertility rate (TFR) worldwide?

Traditionally, how long is the gap between the birth of one child and the birth of the next child worldwide?

a. 1–2 years b. 2–4 years c. 3–5 years d. 4–6 years

What benefit does sadness sometimes produce? a. Sad people tend to think of more creative new ideas

b. Sad people set higher personal goals, on average. c. Sad people tend to evaluate evidence more cautiously before deciding. d. Sad people become more open to trying new activities.