Apparently people sometimes like others based on nothing more than familiarity. This is called the ____

The apparent (or relative) brightness of two objects will remain the same as long as both objects are illuminated by the same amount of light

Indicate whether this statement is true or false

An unspecified variable that may have influenced the two variables in a correlational study is called a:

a. positive correlation. b. predictor variable. c. third variable. d. negative correlation.