Exercise 2 from Chapter 5 (table on p. 147) in Rosenthal and Rosnow (2000)
data(rosenthal_chap5_q2)
a data frame with 12 rows and 4 columns
dependent variable: rating of degree of complexity of social interaction from a series of clips
unique identifier of participant
within variable: complexity of interaction (low, medium high)
between variable: cognitive complexity of participant (high or low)