Paul has often been described as aggressive, impulsive, and lacking empathy. If he took a personality test, on which of Eysenck's basic traits would he obtain an especially high score?

The main advantage of a neuron releasing more than one neurotransmitter is that:

a. if it runs out of one, it has others b. it can release different transmitters on different occasions c. it can send more complex messages d. it can release one from the axon's terminal and one from another location along the axon

Three-month-old Dontrell is eating strained peas for the very first time. Despite the fact that this is a new experience, he appears quite happy with his meal. With regard to temperament, Dontrell is best classified as

A. easy. B. extraverted. C. surgent. D. resistant.