Figure 4.

Alternative Uses “brick” posttest performance for adults and adolescents per training condition on measures: (A) originality (1 = “not original” to 5 = “highly original”), (B) fluency (number of solutions), (C) flexibility (number of categories used in solutions), and (D) unicity (inverse of uniqueness, i.e., mean frequency of provided solution in dataset). No differences were found in originality between age groups and training conditions. Fluency was marginally greater in adolescents trained in rule-switching vs. those trained in general ideation. Adolescents the rule-switch training condition had greater flexibility scores than the adolescents in the creative and general ideation conditions. In adults, the opposite was observed for flexibility, where adults trained in creative ideation outperformed the active control groups in flexibility. For unicity, adolescents had marginally lower scores indicating greater uniqueness of solutions. ^* p < 0.05.