Who was the author of the massively influential book The Origin of Species in 1859?

A clinician who is observing parent-child interactions in the home is conducting a( n ) _____ observation.

A)self-monitoring B)naturalistic C)unstructured D)structured

In Pavlov's experiments, the meat powder (food) placed on the dog's tongue was the

a. conditioned stimulus. b. unconditioned stimulus. c. conditioned response. d. unconditioned response.