Re-designing Slack on Mobile: Simplifying Cognitive Load and Improving User Experience

Re-designing Slack on Mobile: Simplifying Cognitive Load and Improving User Experience

In the world of software design, one of the key principles is to make things intuitive and easy to use. This is particularly important when it comes to mobile applications, as users often have limited screen space and attention spans. In this article, we will explore the concept of cognitive load and its impact on user experience, using the re-design of Slack on mobile as an example.

Cognitive load refers to the amount of information that a user needs to keep in their head at any given time to complete a task or make a change. High cognitive load can be overwhelming and lead to frustration and errors. Therefore, reducing cognitive load is crucial for creating a smooth and enjoyable user experience.

The team at Slack Design recognized the importance of reducing cognitive load when re-designing their mobile app. They understood that users should not have to spend excessive mental effort to understand and navigate the application. By streamlining the design and making it more intuitive, they aimed to improve the user experience and make the app more user-friendly.

One of the strategies employed by Slack Design to reduce cognitive load was to keep the modules cohesive. This means that each module should have a clear purpose and function, making it easier for users to understand its role and navigate through the app. By organizing the features and functionalities into cohesive modules, users can quickly grasp the structure of the app and access the information they need without confusion.

Another approach taken by Slack Design was to make the design more declarative. Instead of relying on complex and convoluted logic, they simplified the relationship between actions and data structures. This simplified approach not only makes it easier to understand the app's functionality but also allows for more flexibility and adaptability when changes are required. By reducing the complexity of the design, the cognitive load on users is significantly decreased.

Additionally, the team at Slack Design emphasized the importance of good comments and documentation. By documenting high-level decisions and providing clear explanations of the code, developers can better understand the reasoning behind certain design choices. This not only helps to reduce cognitive load for developers but also ensures that future updates and modifications can be made more efficiently.

When it comes to reducing cognitive load and improving user experience, there are three actionable pieces of advice that can be applied to any software project:

1. Keep modules cohesive: Organize your codebase in a way that each module has a clear and specific purpose. This will make it easier for users to understand and navigate through the application.

2. Simplify the design: Aim for a declarative design that focuses on the relationship between actions and data structures. By simplifying the design, you can reduce cognitive load and make the app more adaptable to future changes.

3. Document decisions: Take the time to document high-level decisions and provide clear explanations of the code. This will not only help developers understand the rationale behind the design but also make future updates and modifications more efficient.

In conclusion, re-designing an app like Slack on mobile requires careful consideration of cognitive load and its impact on user experience. By focusing on reducing cognitive load through cohesive modules, a simplified design, and thorough documentation, the team at Slack Design was able to create a more intuitive and user-friendly app. These principles and strategies can be applied to any software project to improve the overall user experience and make the application more accessible to users.