How Much Can You Keep in Your Head?
Complete one equipment reservation twice. Pay attention to the effort the interface creates, not just whether you can finish.
Your task
Reserve a Camera Kit for a three-person documentary shoot on Thursday morning. Include a tripod and return the kit the next day.
Use fictional information only. This classroom simulation does not submit or save a real reservation.
VERSION A · HIGHER COGNITIVE LOAD
Make a reservation
Choose options for the equipment request.
Version A complete
Your reservation is ready. Notice what you had to remember, where the process felt uncertain, and how the interruption affected you.
Pause before Version B
- What did you have to keep in mind between steps?
- When were you least sure about your progress or next move?
VERSION B · REDUCED COGNITIVE LOAD
Reserve equipment
- Project
- Equipment
- Pickup
- Review
Version B complete
Your reservation is confirmed in this local practice experience. Compare it with Version A.
Compare the experience
- What information did you have to remember in Version A?
- When did you feel uncertain about progress or revisiting a choice?
- Which specific changes made Version B easier?
Usability, cognitive accessibility, and WCAG
Cognitive load is a usability concern; cognitive accessibility is a broader design objective. WCAG defines specific, testable requirements, not a measure of total mental effort.
- 2.4.6 Headings and Labels (AA): headings and labels that are provided describe their topic or purpose. Both versions use descriptive headings and labels, so the harder flow does not demonstrate a failure of this criterion.
- 3.3.2 Labels or Instructions (A): labels or instructions are provided when input is required. The controls in both versions are labeled; confusing terminology elsewhere is not automatically a failure of this criterion.
- 3.3.7 Redundant Entry (A): information already entered or provided that is required again within the same process must be auto-populated or available to select, unless an exception applies. This simulation collects each reservation detail once; memory demands from a task brief do not by themselves demonstrate that repeat-entry condition.
- 3.2.3 Consistent Navigation (AA): repeated navigation mechanisms are in the same relative order across pages in a set. These simulated steps are on one page, so this activity does not test that criterion.
An interface can satisfy applicable WCAG success criteria while still imposing unnecessary cognitive demands on its users.