Which of the following is not one of the monoamine neurotransmitters?

A cognitive psychologist who analyzes a cognitive task in terms of a series of stages—like the way a computer operates—is using which of the following approaches?

a. the information-processing approach b. the introspection approach c. the gestalt approach d. the parallel distributed processing approach

A consistent estimator is one whose standard error increases with increasing sample size.

a. true b. false