Digital Lexicon Hub

The amount of mental effort a person needs to understand and use an interface or piece of information at a given moment.

When forms, pricing pages or dashboards ask users to read, remember and decide too much, they slow down, make errors or leave. Lower load raises completion rates and cuts support requests, which ties design choices directly to revenue.

A quote form with 18 fields is cut to 7 by dropping fields the CRM can enrich, grouping the rest into two steps and prefilling country from the browser locale; completion is then compared with the old form over 30 days.

Not all load is bad: users still need to absorb new information, and oversimplifying can hide options that expert users need. Load is hard to measure directly, so teams infer it from task time, error rates and self-reported effort.

The concept comes from cognitive load theory in educational psychology, developed by John Sweller, and rests on the limited capacity of working memory. Intrinsic load is the effort needed to take in new information and track goals; extraneous load is processing caused by design that adds nothing to understanding. Designers reduce extraneous load by removing clutter, following familiar conventions, chunking content and using smart defaults, choices that Information Architecture and Usability Testing help validate.