When Ms. Snowden introduces the THiNK Test, she tells her students that T = True, H = Helpful, N = Necessary, and K = Kind. If what they're about to say isn't any of these things, they shouldn't say it. Later that day, when Tyaja is about to criticize her friend Dhavi's new haircut, she is stopped by four little elves sporting the letters T, H, N, and K, who reinforce Ms. Snowden's lesson. Tyaja learns that she is the "I" in THiNK! | Tyaja Uses the THiNK Test by Linda Ryden, Picture Books | Indigo Chapters