To explore whether the facilitation effects of an explicit instruction to "be creative" vary across cultures and types of tasks, 248 U.S. and 278 Chinese college students were administered a battery of tests of verbal, artistic, and mathematical creativity. Half of the participants were tested under the standard condition, and the other half under the explicit instruction condition. Results showed that the facilitation effects of the explicit instruction varied by domains of the creativity tasks (greater for artistic and mathematical creativity than for verbal creativity), but not across cultural and ethnic groups. The explicit instruction had a small "detrimental" effect on the clarity and grammar of story writing, but not on any other aspects of the technical quality of creative products. Methodological and theoretical implications of these findings are discussed. (Contains 3 tables and 3 footnotes.)