Recent theoretical work has called for exploration of the moderating effects of cognitive factors on the relationship between creative ideation and creative production. The Cognitive-Creative Sifting model suggests skills in processing and transforming information influence the association. This study used the Runco Ideational Behavior Scale, Metacognitive Awareness Inventory, and Creative Behavior Inventory to test the moderating effect. Medium to large moderator effects (f2 = .015 to f2 = .041) were observed across previous theoretically proposed aspects of metacognition. A large, statistically significant moderator effect was observed for overall metacognition (f2 = .031). Observed differences across subcomponents of metacognition paralleled theoretical connections between metacognition and creativity. Further studies are suggested using more diverse creativity measures, as well as tests for other cognitive sifters. Implications for educational practice, particularly regarding the creatively gifted, are offered.