Availability bias

As explained in Collaborative Software Design: How to facilitate domain modeling decisions

A cognitive bias in which information that is easy to recall is judged as more important or valuable than less readily recalled alternatives.

Availability bias treats easily recalled information as more important or valuable than alternatives that are harder to retrieve. In collaborative modeling, participants may mistake “easy to come up with” for “good.” section 7.1.2 section 7.2.4

Use collaborative modeling to expose and counter the bias:

• Generate multiple designs instead of accepting the first plausible idea. section 7.2.4
• Evaluate designs for suitability rather than rewarding the one that required less effort. section 7.2.4
• Compare subgroup outputs and use sensemaking to reveal repeated assumptions and similar examples. section 7.1.2

Movie scheduling model

A first design represented a schedule through movies with a name, duration, and playtime. A later design introduced a movie showing. The first design was favored because it was easier to create, not because it better represented the concept. section 7.2.4

Figure 7.1 Sensemaking exercise to demonstrate cognitive bias during collaborative modeling

Use the sensemaking exercise to compare subgroup outputs and make availability-driven similarities visible during collaborative modeling. section 7.1.2

How Collaborative Software Design: How to facilitate domain modeling decisions covers it

How deep it goes

Defines the shortcut, demonstrates its decision effect, and recommends comparing multiple designs before choosing; it does not formalize a measurement method.

Examples

Demonstrates the bias through subgroup Example Mapping and competing movie and movie-showing models.

What it assumes

Assumes participation in collaborative modeling and introduces the distinction between automatic System 1 and effortful System 2 thinking.

What you can do after

Evaluate designs by suitability, compare alternatives, and use collaborative sensemaking to question easily recalled solutions.

How it connects

Connects availability bias with cognitive bias, collaborative modeling, architecture, Example Mapping, and System 1 and System 2 thinking.

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Related concepts

• cognitive biaskind of · A cognitive bias is a systematic tendency in human perception, judgment, or reasoning that can distort how information is evaluated and decisions are made.
• collaborative discovery and modelinguses · Collaborative discovery and modeling is a group technique in which stakeholders jointly create and refine representations to establish shared understanding of a domain or system.
• model fittingproduces · A software design practice of deforming a problem domain by adding or omitting elements so that it conforms to an existing model, metaphor, or architecture.

This explainer was generated by Manning's knowledge graph from the text of Collaborative Software Design: How to facilitate domain modeling decisions. The section links point to the parts of the book it draws on.