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The Decider


The decision-support system, The Decider, is a human-emotional interface intended to help people find their true opinion through supporting rationalization or enhancing intuition.

Since my friends and family members often consult me on their decision-making processes, I had the idea to develop a tool for this specific task.

It is generally not easy for us humans to make decisions and there are many decision-support systems (DSS) to facilitate this process already. Interestingly, when I looked around for potential competition for my product idea, I noticed that most apps for this purpose either don’t work well or have a terrible interface. Another issue was that it was difficult to understand how the DSS functioned. As a result, I concluded that the challenge of such a product is to be functional for the user while also being understandable and intuitive.

During my studies in cognitive science I had already dealt with the processes of human decision-making in detail. With this background, I was fortunately able to quickly gain an overview of the complexity of decision-making and break it down into smaller aspects to work with further.

There are two approaches for us humans to make a decision: the rational and the intuitive way. Both have their advantages, disadvantages and factors that influence the process.

rational decision-making


  • only if an optimal solution is possible
  • fact driven approach: minimizing biases, enhancing objectiveness

  • not a very human approach
    due to our lack of cognitive capacities and optimization
    (motivation ends as soon as a sense of satisfaction is reached -> no ongoing optimization)
  • time consuming
  • limits of information / knowledge / anticipation
    quantity, quality, accuracy and integrity of information are often missing
  • cause-effect relationships are not clearly discernible

intuitive decision-making


  • good for low value decisions
  • speed
  • a certain degree of intuition is required
    (more difficulty in decision making -> less intuition).
  • ability that can be improved through learning

  • inaccurate, insufficient, unreliable and unrelated information is indistinguishable
  • inappropriate application possible (example: overconfidence)
  • short term emotional bias
    (even experts can be influenced by unrelated emotions)
  • bias due to prejudice (example: lack of openess)
  • insufficient consideration of alternatives – limits of information
    (intuition relies on pattern-recognition -> limiting options)
  • heuristics and habits

So how does one choose the right approach for an upcoming decision?
To answer this question, I have compiled some (certainly not all) decisive factors.

How much time can be invested in the decision-making process? More time -> more effective analysis of situation possible. (Risk of overanalyzing -> analysis paralysis.)

What is the motivation behind the decision? A decision that deals with the fear of losses is something completely different from a decision about possible gains.

Always play a role. The question is which.

Importance of the decision result. Higher value -> requires more consultative / collaborative approach.

How to define the optimal solution? Is a satisfactory outcome sufficient, or is maximization/optimization of the solution required? (Risk of moderate solution bias, criterions for quality could be: level of action, social harmony, self-actualization.)

Commitment to implementation
Are the options of the decision realistically implementable? -> Many decisions fail at this point because the acceptance / commitment is too low.

Relationship impact
If the decision is embedded in a social context -> decision-making approach should include social factors.

Are the options imaginable without additional help? Is the decision comprehensible?

Both deicision-making approaches contain sources of bias -> How to deploy bias filter?

With my theoretical findings in mind, I began to design a process for my app that incorporates both rational and intuitive decision-making approaches, as well as methods for filtering biases.

The procedure is split up into three sections:

1. Identifying the problem
2. Getting into the decisive mood
3. Reevaluation of the decision

Then I started designing the wireframe in my sketchbook and moved on to Figma once my visual concept was clear.

Currently, I’m working on the prototype.

Ultimate Battle Dice

Photoshop, Blender, Unity

Sprites and UI design for a game that my friend developer Superschnitzel and I are working on.

alien enemy
12/2022 Blender