Which of the following is not a threat to internal validity?

“ Let us work together to end bigotry, racism, and prejudice. Let us remember that

equality is a spirit that we must practice, and a principle that we must pass on to our children.” This conclusion is an example of a. a summary b. an appeal c. a challenge d. a rhetorical question

One characteristic of communication is that it is cultural. Which statement is NOT true?

a. Different cultures make different assumptions. b. Each time you talk to someone, from your culture or another, you are taking knowledge for granted. c. Cultural expectations are only reinforced when someone violates them. d. You perform and enact your culture through communication.