p. 29: there should be an additional arrow-tipped line, one that connects the circle to the "yellow" box
p. 37: fourth entry in the order presented on the sixth line of the first paragraph should be 12 (not 11)
p. 180, Exercise 12-5: switch column labels (Without clinic, With clinic)
p. 184, Answer to Exercise 12-1: The answer should include a statement that the attrition ANOVA table shows no significant effects
p. 185, Answer to Exercise 12-2: Remove asterisk from F-ratio of 3.82
p. 238, Answer to Exercise 14-1: Within df should be 16 for all three clients.