________ explains why a person who is alone is more likely to be helpful than is a person who is surrounded by other people

The cycle "increased helplessness - internal attributions - depression - increased

helplessness ..." is an example of (a) a negative feedback loop (b) positive feedback loop (c) operant conditioning (d) the fundamental attribution error, which plays a role in learned helplessness (e) a cycle of acquisition - extinction - acquisition - extinction etc.

Young children frequently make up early sentences using which parts of speech?

a. Two verbs such as "go run" b. Two adjectives such as "pretty fast" c. Two nouns such as "mommy shoe" d. A noun and a verb such as "run mommy"