Given the value placed on honesty and the negative consequences of lying, encouraging children's truth-telling is important. The present investigation assessed honesty promotion techniques for encouraging 3-8-year-old Canadian children's (Study 1: n = 301, 54% female; Study 2: n = 229, 50% female from predominantly White middle-class samples) disclosure of a transgression and whether they varied by age. Study 1 examined promising to tell the truth, inducing self-awareness, and the combination of both promising and self-awareness. Study 2 assessed modeling honesty, positive consequences of honesty, and the combination of modeling and consequences. Some individual techniques worked for specific age groups: Self-awareness only increased 3-4-year-olds' and promising only increased 7-8-year-olds' honesty. However, the combination of modeling and consequences increased honesty for all age groups. Findings suggest that different motivational factors may encourage children's honesty across childhood.