Brainstorming¶

Strategy · All strategies
Evidence · no claims cited

Description¶

Brainstorming asks learners to generate as many ideas as possible around a problem or question within a set time, following rules that defer judgment, welcome wild ideas, and build on others' contributions. It is typically used at the start of a project, design task, or inquiry cycle to broaden the solution space before evaluation and selection begin.

Design Implications¶

Brainstorming operationalizes the principle of separating idea generation from idea evaluation: premature criticism suppresses production, while deferred judgment increases both the quantity and, with good facilitation, the quality of ideas [~M]. However, the classic group format carries well-documented productivity losses — production blocking, evaluation apprehension, and free riding mean nominal groups (individuals pooling ideas) typically outperform interacting groups [~S]. Well-designed implementations mitigate these losses through silent individual generation, round-robin sharing, or written formats such as brainwriting.

Context¶

Requirements¶

• A clearly framed, open-ended prompt with a defined problem or question
• Explicit ground rules: no criticism during generation, quantity over quality, building on ideas permitted
• A visible capture mechanism (board, shared document, sticky notes) so ideas persist for later convergence
• A distinct, later phase for clustering, evaluating, and selecting ideas

Constraints¶

• Interactive group brainstorming often produces fewer and less diverse ideas than the same number of individuals working alone, due to production blocking — only one person can speak at a time [~S]
• Evaluation apprehension suppresses idea sharing when learners fear judgment, especially in low-trust or high-stakes classroom climates [~M]
• Without a follow-up convergence phase, brainstorming yields lists rather than decisions and can consume time without advancing the task [~M]
• Highly structured or well-defined problems benefit little; brainstorming is weakest when there is a single correct answer that prior instruction already covers

Implementation Variability¶

• Brainwriting: learners write ideas silently and pass sheets for others to build on, eliminating production blocking [~M]
• Brainstorm-then-vote (nominal group technique): silent generation followed by round-robin sharing and independent ranking
• Electronic brainstorming: parallel anonymous idea entry in shared documents or tools (e.g., Padlet, Miro), which reduces evaluation apprehension and blocking
• Individual-then-group sequencing: solo generation before group sharing increases total idea diversity compared with group-first formats

Target Learners¶

• Learners at the start of open-ended projects (design, writing, inquiry) who need to expand their solution space before committing
• Mixed-ability groups benefit from silent or written formats, which prevent dominant voices from capturing the floor [~M]
• Less useful for novices who lack domain knowledge to generate from — idea generation depends on retrievable prior knowledge; activating prior knowledge first improves output [~M]

Target Learning Goals¶

• Divergent thinking and idea fluency
• Problem framing and scoping before project work
• Collaborative knowledge building and perspective exchange

Instructions¶

1. Frame the prompt and constraints clearly; post the ground rules (defer judgment, go for quantity, build on ideas).
2. Begin with silent individual generation (2–5 minutes) to counter production blocking [~S].
3. Collect ideas round-robin or via a shared board, building without evaluating.
4. Cluster and name idea groups, then move to explicit evaluation criteria and selection — keep generation and judgment in separate phases.
5. Record the final selection and revisit discarded ideas later if the chosen direction stalls.

Related Strategies¶

• Think-Pair-Share — a structured micro-sequence that embeds individual generation before sharing, addressing the same blocking problem
• Case-Based Learning — brainstorming often serves as the opening generative phase before case analysis
• Top scoring: students self-select their top three ideas for a fluency-independent creativity rating

Examples¶

• Design thinking curricula (e.g., the Stanford d.school K-12 Lab resources, https://dschool.stanford.edu) use brainstorming as the ideation stage, with explicit rules and silent "stacking" of sticky notes before clustering.
• Project-Based Learning units (e.g., PBLWorks, https://www.pblworks.org) typically open with a "need to know" brainstorm that generates student questions driving subsequent inquiry.
• Writing workshops use prewriting brainstorms — listing, mapping, freewriting — to generate content before drafting and outlining.

Key Sources¶

• Osborn, A. F. (1953). Applied imagination: Principles and procedures of creative thinking. Charles Scribner's Sons.
• Diehl, M., & Stroebe, W. (1987). Productivity loss in brainstorming groups: Toward the solution of a riddle. Journal of Personality and Social Psychology, 53(3), 497–509. doi:10.1037/0022-3514.53.3.497
• Paulus, P. B., & Yang, H.-C. (2000). Idea generation in groups: A basis for creativity in organizations. Organizational Behavior and Human Decision Processes, 82(1), 76–87. doi:10.1006/obhd.2000.2888
• Nijstad, B. A., & Stroebe, W. (2006). How the group affects the mind: A cognitive model of idea generation in groups. Personality and Social Psychology Review, 10(3), 186–213. doi:10.1207/s15327957pspr1003_1