Diagrama de Causa-Efecto (Espina de pescado o Ishikawa)

What is a Cause and Effect Diagram?

Overview of the Cause and Effect Diagram

• The cause and effect diagram, also known as a fishbone diagram due to its skeletal appearance, was developed by Kaoru Ishikawa in 1943.

• This strategy aids in analyzing problems through data collection, allowing for the identification of causes and their effects.

Purpose of the Cause and Effect Diagram

• It enhances analytical skills related to problem-solving by identifying causes and effects.

• The diagram helps structure, prioritize, differentiate, compare, classify, categorize, sequence, group, and organize large amounts of documents effectively.

• It serves as a valuable tool for teamwork by fostering a common understanding of issues among team members.

How to Create a Cause and Effect Diagram

Steps to Construct the Diagram

1. Draw the Head: On the right side of a sheet, draw an oval representing the "head" where you write down the specific problem being analyzed.

2. Create the Backbone: Draw a line intersecting with the oval; this will serve as the backbone of your fishbone diagram.

3. Add Categories: Atop each "spine," label categories or areas relevant to the problem for easier identification later on.

4. Brainstorm Causes: Conduct brainstorming sessions to list potential causes under their respective categories; this step is crucial for identifying root causes effectively.

5. Detail Secondary Causes: For each spine on your fishbone diagram, add secondary causes if applicable before presenting and discussing your findings with others.