At Plymouth Elementary, first- through third-graders learn in a multiage classroom where children of varying ages and abilities work in groups, teaching and helping one another. This classroom emphasizes the Vygotskian principle of __________

The relatively small size of sex differences has led some researchers to argue that instead of focusing on differences, researchers should focus on what?

What will be an ideal response?

Jessie has a nagging backache after a day spent raking leaves. This nagging pain

a. involves the body's reminding system for pain. b. is carried by small nerve fibers. c. may cause agony long after this injury has healed. d. involves all of these characteristics.