Which of the following reasons is the most likely reason Dr. Elder conducted a factorial design?
a. To test whether there is a difference between creating and searching for category members
b. To test whether task type interacts with the effect of activity focus c. To test whether there is a difference between thinking about a category and thinking about a category and its opposite
d. To determine whether a mediator was present in participants’ ability to categorize

Americans often speak of their country as one of several large regions.  these regions are cultural units rather than governmental units --  formed by history and geography and shaped by the economics, literature and folkways that all the parts of a region share. what makes one region different from another? a region's multicultural heritage as well as distinct demographic characteristics like age and occupation make regions different and special. within several regions, language is used differently and there are strong dialects. there are also differences in outlook and attitude based on geography.