Parkinson's disease patients are often treated with dopamine because L-dopa cannot cross the blood-brain barrier

When she was a little girl and when she was an adult, Dora was willing to go on adventures with her big sister that she would be reluctant to undertake alone. Being around her big sister gave her the confidence to explore her environment. Evidently, Dora's sister provided Dora with the evolutionary function of attachment known as _________________.

Fill in the blank(s) with the appropriate word(s).

Which of the following research results provides support for the social impulses theory oflanguage learning?

Toddlers learn new words best by hearing an adult say a new word while they are playing with an unrelated object. Toddlers learn new words best when they are taught in person. Toddlers learn new words best in a group setting. Toddlers learn new words best by watching others talk.