Although environmental factors are important, they usually affect each child in a unique way, which makes siblings differ

Chimpanzees lack the most important and distinctive feature of human language. What is that?

a. a pharynx b. Broca's area c. abstract word knowledge d. infinite generativity

All of the following are aspects of the temperamental dimension positive emotionality except ____________

a. low-intensity pleasure b. high-intensity pleasure c. activity level d. behavioral inhibition