TLDR: Reverger is a new AI-powered tool designed to enhance creative story ideation by supporting flexible, recursive iteration between divergent thinking (exploring diverse ideas) and convergent thinking (synthesizing selected ideas). A user study demonstrated that Reverger helps writers explore more unexpected directions, gain finer control over outcomes, and achieve higher satisfaction with fewer iterations, fostering a strong sense of ownership despite AI assistance.
Creative thinking often involves two key processes: exploring many different ideas (divergence) and then combining the best ones into a coherent whole (convergence). While these processes are usually intertwined and repeated, many existing AI tools designed to help with creativity don’t fully support this complex back-and-forth. A new research paper introduces Reverger, an AI-powered tool specifically designed to help users with story ideation by scaffolding flexible iteration between divergence and convergence.
The paper, authored by Taewook Kim and Matthew Kay from Northwestern University, along with Yuqian Sun, Melissa Roemmele, Max Kreminski, and John Joon Young Chung from Midjourney, highlights how current AI creativity tools often fall short. Some tools generate many variations but don’t help much with combining them. Others generate a single output, which can limit exploration and lead to users getting stuck on one idea. Reverger aims to bridge this gap by offering a more integrated approach.
Reverger’s design is based on three core principles: supporting interleaved iteration between divergence and convergence, enabling recursive exploration of diverse high-level ideas through abstraction, and facilitating the selective collection and instantiation of multiple ideas into a cohesive artifact. This means users can continuously generate new ideas, refine them, and combine them until they find a satisfactory outcome.
The tool works by allowing users to highlight a specific part of an original story. For divergence, Reverger can generate eight potential high-level directions for modifying that part. Users can then recursively explore more specific sub-directions, such as refining a general ’emotion’ direction into ‘happy,’ ‘sad,’ or ‘anger,’ and then further into ‘depressed,’ ‘loss,’ or ‘melancholic.’ This recursive exploration helps users discover unexpected ideas and precisely define their intentions.
For convergence, Reverger allows users to select multiple promising directions they’ve explored. The AI then synthesizes these selected directions into concrete story variations. For example, if a user selects ‘humorous > slapstick’ and ‘setting > location,’ the tool generates a story incorporating both elements. This feature helps users achieve precise outcomes and reduces the number of iterations needed to find a satisfactory result.
A study involving 16 participants, including both hobbyist and expert writers, compared Reverger with a baseline tool. The results showed that Reverger significantly improved users’ ability to explore ideas and led to outcomes they felt were more worthwhile. Participants reported that the tool expanded their creative boundaries by suggesting unexpected directions and allowing them to refine vague intentions into specific changes. Many also found that the ability to combine multiple directions simultaneously led to higher-quality outputs.
Participants envisioned using Reverger in various ways, from making minor refinements to targeted passages, like adjusting tone or dialogue, to major brainstorming sessions for significant story alterations, such as changing character personalities or introducing new plot points. This flexibility suggests the tool can cater to a wide spectrum of creative needs.
However, the study also identified some concerns. Localized editing, while flexible, could lead to inconsistencies in the overall narrative if broader changes are required. There was also a concern about potential over-reliance on AI, with some participants worrying that it might blur the lines of authorship or lead to less original work. Despite these concerns, many participants reported a strong sense of ownership over their creations, attributing it to the fact that they made all the final choices and often added their unique directions.
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The researchers suggest future directions for AI-powered creativity tools, including allowing users to calibrate the diversity of AI-generated outputs, developing features to maintain narrative consistency across edits, and extending the divergence-convergence support to other creative domains like music composition or image generation. This research offers valuable insights for designing AI tools that empower human creativity while preserving human agency. You can read the full paper here: Scaffolding Recursive Divergence and Convergence in Story Ideation.
