Abstract
Generative AI is commonly positioned as an idea generator in design problem solving, although direct suggestions can also anchor designers or reduce their engagement with problem framing. CRAFT explores a complementary role: an AI agent that enters only after unaided ideation and challenges a provisional design through critical feedback. In a three-condition between-participants study, 30 students from 12 academic degree programs completed a time-bounded ill-structured design task involving the development of an interactive, adaptive piece of furniture and then reviewed their concepts either without support (A), with a short generic checklist (B), or with design-specific feedback from CRAFT (C; n = 10 each). Outcomes included think-aloud verbalizations, an adapted version of the Creative Product Semantic Scale (CPSS) rated blindly by two human experts and two independent AI systems, design-change ratings, workload, and a semantic-divergence pretest. The small, heterogeneous sample make this an exploratory, formative study rather than a confirmatory test. No omnibus comparison met the .05 threshold for statistical significance. Nevertheless, several descriptive patterns converged: C produced the highest mean CPSS composite for all four raters and the highest qualitative-change rating for all four raters; participants in C also verbalized more requirements and self-criticism, but fewer self-directed process questions and planning statements. Rater rank-order showed convergence in general but varied substantially. The reported observations do not establish an intervention effect. They instead identify candidate mechanisms and controls for a larger preregistered study of whether deliberately critical AI feedback can support reflective design without taking over ideation.

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Copyright (c) 2026 Marcus Plach, Gustav Gutsche, Jan Conrad, Dieter Wallach
