In an experiment, what group receives the treatment?

Regarding handedness, which of the following statements is FALSE?

a. Prenatal hand preferences persist for at least ten years after birth. b. Handedness appears to be influenced by a single gene on the Y chromosome. c. Forcing a left-handed child to use the right hand may create speech or reading problems. d. Two left-handed parents are more likely to have a left-handed child than two right-handed parents are.

When Jim started attending an Alcoholics Anonymous chapter meeting, he found that the members shared similar stories about their experiences with alcohol and recovery. He began to realize that their story also fit his experiences. This illustrates what distinctive feature of mutual help?

a. helper therapy principle b. experiential knowledge c. a community narrative d. a focal concern

__________ promotes the growth of female reproductive organs and helps maintain pregnancy

a. Estrogen c. Progesterone b. Oxytocin d. Luteinizing hormone

Thirty-five percent of children do not fit into any of the Thomas and Chess temperament categories. Instead, they

A) show temperamental characteristics that researchers have not yet classified. B) have temperamental characteristics that change frequently, depending on social and family influences. C) show unique blends of temperamental characteristics. D) display no identifiable temperamental characteristics.