This theory maintains that people are motivated to maintain an optimal level of alertness

A person's developmental level refers to that person's

a. current state of physical, emotional, and intellectual development. b. past state of health and physical development. c. future capabilities and potentials regarding intellectual development. d. future status in all developmental areas based on past measurements of health and well-being.

Kang learned Chinese in school in China. In the higher grades there he learned English, which came in handy when he moved to the United States. This is ________ bilingualism

Fill in the blank with correct word.