Brett is driving down the highway. Suddenly he hears a high-pitched sound and sees blue lights flashing in the vehicle beside him. Brett thinks "police officer." All this occurred in the first two stages of perception

Re-interviewing the same people at several points in time is an example of a (an)

a) Cross sectional survey b) Panel study c) Trend analysis d) Interrupted time series analysis

What is the general threshold for word count on single webpages?

a. no limit, as long as it is interesting b. 250 c. 500 d. 1,000