____________ is an objective, standardized way of describing the strength of the independent variable's influence on the dependent variable

Mr. Nydam suffers amnesia and is unable to remember playing golf on a particular course. Yet the more he plays the course, the more his game improves. His experience illustrates the need to distinguish between:

a. short-term memory and long-term memory. b. proactive interference and retroactive interference. c. explicit memory and implicit memory. d. recognition and recall.

A Duchenne smile is best described as a(n) ____

a. fake smile b. genuine smile c. evil smile d. bitter smile