BrainChat: Generative Brainstorming for Human-Centered Design (HCD)

Brainstorming Human-AI Collaboration Human-Centered Design

Problem: Traditional brainstorming in HCD is limited by design fixation, subjective bias, and constrained idea exploration.

Solution: BrainChat supports human-AI collaborative ideation through AI personas.

Project cover image

Background

" Ideation plays a key role in modern Human-Centered Design "

Human-Centered Design (HCD)

  • Increasing importance in complex industries and services
  • Growing need for user-centered problem solving
  • HCD process: Empathize → Define → Ideate → Prototype → Test
IDEO's Human-Centered Design Perspectives

Fig.1. IDEO's Human-Centered Design Perspectives

Importance of Ideation

  • Collaborative ideation supports diverse perspectives
  • Agile and iterative methods are increasingly adopted
  • Early-stage ideation plays a critical role in innovation
IDEO's Human-Centered Design Process

Fig.2. IDEO's Human-Centered Design Process

Problem

" Traditional ideation is often constrained by human limitations "

Human Limitation in Ideation

Traditional ideation is often constrained by human cognitive limitations.

Table 1. Human Strengths and Limitations

Strength Limitation
Creative Problem Solving Information Limitation
Empathy Subjective Bias
Flexible Decision-Making Cognitive Fatigue

Goal

" Enhancing ideation by maximizing human strengths and complementing human limitations "

Solution

" Applying human-AI collaboration to brainstorming "

AI-Assisted Ideation

AI supports rapid and diverse idea exploration in early-stage ideation.

Table 2. Advantages of AI in Ideation

Strength Description
Rapid Processing Fast and accurate computation
Repetition & Randomness Diverse and unexpected idea generation
Diverse Knowledge Broad knowledge background and associations

Brainstorming-Based Ideation

  • Free idea generation
  • Perspective expansion
  • Collaborative interaction
  • Early-stage ideation support

Human-AI Collaborative Brainstorming

Persona-based chat interaction was applied to support collaborative brainstorming and idea exploration.

Table 3. Brainstorming-Based AI Strategy

Human Limitation Brainstorming-Based AI Strategy
Information Limitation Data storage and summarization
Subjective Bias Diverse knowledge exploration
Cognitive Fatigue Time-limited sessions
Collaboration Constraint AI persona interaction

Result

Design and Prototype

  • AI persona-based brainstorming interaction
  • Real-time collaborative ideation flow
  • Session-based idea exploration and summarization
  • Human-AI collaborative brainstorming environment
BrainChat System Architecture

Fig.3. BrainChat System Architecture

BrainChat Sequence Diagram

Fig.4. BrainChat Sequence Diagram

BrainChat User Interface Screens

Fig.5. BrainChat User Interface Screens

" The proposed prototype demonstrated the potential of human-AI collaborative brainstorming for flexible and diverse ideation "