Brainstorming vs. NGT vs. Delphi

Attribute	Brainstorming vs. NGT	Delphi
Process	Group idea generation technique	Structured communication method
Participants	Usually a larger group	Can involve a smaller group
Facilitator	May or may not have a facilitator	Usually has a facilitator
Goal	Generate a large number of ideas quickly	Reach consensus on a specific issue
Structure	Less structured	More structured

Introduction

Brainstorming, Nominal Group Technique (NGT), and Delphi are all popular methods used in group decision-making processes. Each method has its own unique attributes and benefits, making them suitable for different situations and goals. In this article, we will compare the attributes of brainstorming, NGT, and Delphi to help you understand which method may be most appropriate for your specific needs.

Brainstorming

Brainstorming is a creative problem-solving technique that involves generating a large number of ideas in a short amount of time. This method is typically used in group settings, where participants are encouraged to share their ideas freely without criticism. The goal of brainstorming is to come up with as many ideas as possible, regardless of their feasibility or practicality.

• Encourages creativity and innovation
• Allows for diverse perspectives and ideas
• Promotes collaboration and teamwork
• Quick and easy to implement
• Can be used in a variety of settings and industries

NGT

NGT is a structured group decision-making technique that aims to prioritize and evaluate ideas generated by group members. Unlike brainstorming, NGT involves a more systematic approach to idea generation and evaluation. Participants are asked to individually generate ideas, which are then shared with the group and ranked based on predetermined criteria.

• Provides a structured framework for decision-making
• Ensures equal participation from all group members
• Helps prioritize ideas based on objective criteria
• Reduces the influence of dominant personalities in the group
• Results in a more focused and efficient decision-making process

Delphi

Delphi is a method used to achieve consensus among a group of experts on a particular topic. This technique involves multiple rounds of surveys or questionnaires, where experts provide their opinions anonymously. The responses are then aggregated and shared with the group, allowing participants to revise their opinions based on the feedback received.

• Allows for input from a diverse group of experts
• Reduces the impact of group dynamics and biases
• Encourages thoughtful and well-informed decision-making
• Can be conducted remotely, making it convenient for geographically dispersed groups
• Results in a more reliable and accurate consensus among experts

Comparison

When comparing brainstorming, NGT, and Delphi, it is important to consider the specific goals and constraints of the decision-making process. Brainstorming is best suited for situations where creativity and innovation are valued, and a wide range of ideas is needed. NGT, on the other hand, is more appropriate when a structured approach to idea generation and evaluation is required, and when objective criteria need to be applied.

Delphi, on the other hand, is ideal for situations where input from a diverse group of experts is needed to achieve consensus on a complex or controversial topic. While brainstorming and NGT are more suitable for group settings, Delphi can be conducted remotely, making it a convenient option for geographically dispersed groups.

Overall, each method has its own strengths and weaknesses, and the choice of method will depend on the specific goals, constraints, and preferences of the decision-making process. By understanding the attributes of brainstorming, NGT, and Delphi, you can make an informed decision on which method is most appropriate for your needs.