The _______________ is a psychological approach that emphasizes mental processes in perception, memory, language, problem solving, and other areas of behavior

Compared to artificial concepts learned in the laboratory, natural concepts tend to be

a) easier to learn. b) very clear and well-defined. c) more complicated and not as clearly defined. d) good fits with a rigid classification system.

Nodes of _____ are gaps in the _____ that coat some axons

a) myelin; glia b) Ranvier; myelin c) membrane; sheath d) axons; synaptic fluid