What term is used to describe the development of the human species?

Which of the following would most likely be acquired by classical conditioning?

a. a rat learning to run through a maze correctly b. a person learning to blink to the word "psychology" c. a pigeon learns to peck a key of a toy piano d. a rat learns to press a bar to receive food

Nonparametric statistical tests often are called _____ tests

a. distribution-free b. variance-free c. null-parameter d. nondirectional