Less Back-and-Forth: A Comparative Study of Structured Prompting
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Computer Science > Computation and Language
Title:Less Back-and-Forth: A Comparative Study of Structured Prompting
Abstract:Large language models (LLMs) are widely used for open-ended tasks, but underspecified prompts can lead to low-quality answers and additional interaction. This paper studies whether structured prompt design improves response quality while reducing user effort. We compare three prompt conditions: a raw prompt, a checklist-improved prompt, and a clarifying-question prompt. We evaluate these conditions across four task types--summarization, planning, explanation, and coding--using three LLM systems: ChatGPT, Claude, and Grok. Each output is scored with a unified rubric covering task completion, correctness, compliance, and clarity. Checklist-improved prompts achieved the highest mean rubric score, 7.50 out of 8, compared with 5.67 for raw prompts and 6.67 for clarifying-question prompts. Checklist prompts also produced the best quality-effort tradeoff, using fewer average tokens than both raw and clarifying prompts. These results suggest that a simple prompt checklist can improve LLM responses while reducing unnecessary interaction.
| Comments: | 7 pages, 2 figures, 6 tables |
| Subjects: | Computation and Language (cs.CL); Artificial Intelligence (cs.AI); Human-Computer Interaction (cs.HC) |
| Cite as: | arXiv:2605.20149 [cs.CL] |
| (or arXiv:2605.20149v1 [cs.CL] for this version) | |
| https://doi.org/10.48550/arXiv.2605.20149
arXiv-issued DOI via DataCite (pending registration)
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