Question: An experiment was conducted to compare three types of behavior modification (1, 2, and 3) using age as a blocking variable (4-, 6-, and 8-year-old children). The mean scores on the dependent variable, number of instances of disruptive behavior, are listed here for each cell. The intention of the treatments is to minimize the number of disruptions.
Use these cell means to graph the interaction between type of behavior modification and age.
a. Is there an interaction between type of behavior modification and age?
b. What kind of recommendation would you make to teachers?