QUESTION In Chapter 12 Problem 1 (short-term memory in 60 hyperactive children), the results of Tukey's test for the main effect of drug levels reveals that short-term memory is not different between Cylert and Ritalin conditions, but both are better than the placebo short-term memory is better for Cylert than the placebo or Ritalin short-term memory for Ritalin is better than for Cylert or the placebo short-term memory is poorer for Cylert and Ritalin than for the placebo