Since working memory is limited, visualizations should be designed to minimize ________ load.

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BlackTom AI · Accepted Answer

The question asks about designing visualizations given the limitation of working memory, and asks to fill in the blank with the type of load to minimize.
First, note that working memory has finite capacity, so the aim of effective visualization is to reduce cognitive burden on the user by limiting unnecessary mental effort.
Since there are no answer choices provided, I will focus on the concept itself: in cognitive load theory, three types of load are discussed—intrinsic load (related to the task difficulty), extraneous load (unhelpful or distracting design elements), and germane load (productive processing leading to schema construction).
In visualization design, the practical objective is to minimize extraneous cognitive load, because extraneous elements draw attention and mental resources away from the essential information the user needs to extract.
By simplifying layouts, using consistent visual encodings, avoiding unnecessary decorations, and aligning visuals with users’ prior knowledge, we reduce extraneous load and free working memory to process the core data.
If a visualization presents too many elements, complex color schemes, or non-intuitive groupings, users must expend extra mental effort just to interpret the display, which increases cognitive load and reduces performance.
Therefore, the correct concept to minimize in light of limited working memory is cognitive load—specifically aiming to minimize extraneous cognitive load in visualization design.
In summary, the overarching principle is to minimize cognitive load by reducing extraneous load, while managing intrinsic load and supporting germane processing through clear, efficient visual encoding.

DS 330 - Visual Analytics - SP25 Quiz - Heuristics

Since working memory is limited, visualizations should be designed to minimize ________ load.

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