At approximately what age should a child first be able to manipulate objects with almost as much capability as an adult?

Two-year-old Perry loves to involve his parents in his playtime. Perry's mother tends to engage Perry more in which type of activity than his father does?

a. conventional play, such as peek-a-boo b. unusual play, such as imitating Perry c. physical arousing play, such as rough-and-tumble play d. tactile activities, such as tickling

One difference between the parasympathetic and sympathetic divisions of the autonomic nervous system is

a. control of the parasympathetic division is unconscious whereas control of the sympathetic division is conscious. b. the parasympathetic division maintains control of the body’s organs whereas the sympathetic division maintains control of the body’s glands. c. the parasympathetic division is active only occasionally whereas the sympathetic division is in control of the body most of the time. d. the parasympathetic division maintains a state of calm and rest whereas the sympathetic division prepares the body for a sudden expenditure of energy. e. cell bodies of parasympathetic neurons originate in the cortex whereas cell bodies of sympathetic neurons originate in the spinal cord.