Decision matrices can be used in many disciplines, from design to engineering, and can also be a useful tool for making personal decisions. Having a manageable list of options and criteria is essential for harnessing the power of a decision matrix. So, if there are a lot of options, or if there is a high number of criteria, eliminate some choices and then use the matrix to reach a final decision. Below is an overview of some of the more well-known decision-making methods.
Kepner Tregoe Method
Created by Charles Kepner and Benjamin Tregoe, this option provides a methodology for gathering, evaluating, and prioritizing information to identify the root cause of a problem and prevent it going forward. It includes four major steps:
- Appraise the Situation: Outline concerns and choose a direction.
- Analyze the Problem: Define the problem and its root cause.
- Analyze Decisions: Identify alternatives and perform a risk analysis for each by using a weighted decision matrix.
- Analyze Potential Problems: Further examine the best alternatives in an effort to expose potential issues, and look for ways to mitigate the problems and minimize risk.
Multi-Attribute Utility Theory
This method is a mathematical concept that quantifies how people choose an option when there are more than one variable affecting their decision. In other words, it’s the theory behind such tools as a decision matrix. The mathematically inclined can read more here.
Multiple-Criteria Decision Analysis
Also called multiple-criteria decision-making, this method is an operations research discipline that evaluates conflicting criteria in decision making. Because decision matrix criteria should not overlap, this discipline doesn’t really impact decision matrices.
Quality Function Deployment
A method that helps transform qualitative customer feedback (often called Voice of the Customer) into quantitative and actionable data. Also used in Six Sigma, quality function deployment can have some impact on decision matrices if the data derived from it become criteria or options used in a matrix.
Critical Analysis
Use critical analysis when analyzing and critiquing each relevant factor to help form an objective judgement. You can use a decision matrix as part of the critical analysis process.
Belief Decision Matrix
Similar to a decision matrix, a belief decision matrix uses a belief distribution instead of assigning a single value for each criteria. A belief distribution provides a range of values for each criteria, based on the certainty or uncertainty of the rating, or the subjective judgement of the person or group making the decision.
Decision Tree
A more visual way to guide decisions, a decision tree represents a list of previously-identified decisions that guide a user to the best resolution of the problem. A well-known simple (and humorous) example is embedded at the upper right in this blog post.
Brainstorming
A well-known method of generating ideas in a group setting, brainstorming encourages members to throw out ideas that are later winnowed down to a more focussed list. This can be a useful tool to come up with criteria to judge the options.
HIPPO (Highest-Paid Person’s Opinion) Method
In short, the boss decides what’s best. Hopefully a decision matrix can help the person at the top come to an objective decision.
Compare and Contrast
You probably used compare and contrast when writing a book report in junior high. Using this tool might be a good way to narrow down a long list of possible criteria.
Consider All Factors (CAF) Method
Another way to shorten a list, use this method to look at the pros and cons of all possible criteria, as well as alternatives, to determine which are the most important.
Plus, Minus, Interesting (PMI) Technique
As an alternative to a decision tree, the PMI technique examines options and list the pluses, minuses, and interesting facts about each. Use that data to guide the final decision. This method is more subjective than a decision matrix.
Stacked Ranking
Also called forced distribution or a vitality curve, stacked ranking is a way evaluate employees. The method requires placing a certain percentage of employees into predefined categories (20 percent are top performers, 70 percent are adequate, and 10 percent are non-performers). You can easily adapt this method to other decision making scenarios, particularly when needing to narrow lists of criteria.
Rank Order
Another way to sort possible criteria, use a rank order to put items in order of preference.
Multivoting
Multivoting is another technique that allows groups to decide among alternatives or winnow down the number of criteria before using the decision matrix. In this method, everyone is given a fixed number of votes (e.g. 10 per person), and allowed to assign them to the options. Each person can assign all their votes to one option, assign one vote to many, or anything in between. The options with the highest number of votes win.