Experiment 1 Sample means and standard deviations by condition.Persuasion technique

Persuasion technique

Self-persuasion Direct persuasion

Message Wording

Experienced Negative affect(1 "completely not" to 7 "completely")

"You should" M(SD)1.92(0.80) "You should" M(SD)2.94(1.76)

"You have to" M(SD)2.51(1.61) "You have to" M(SD)2.88(1.47)

What is the experimental design related to the data presented in this table? Identify all independent variables, their levels and whether each variable is between- or within-subjects.

State what analysis of variance (ANOVA) is appropriate for this design, and defined all null hypotheses that will be assessed by this ANOVA.

Each null hypothesis will be tested by an F test. Define the source of variability that contributes to the denominator of the F test related to the main effect of "Message Wording" (in order words, what defines the error term the F test for the main effect of "Message Wording").