A usable product is a better product.
To help us build better products, we must understand how easy they are to use. Any interface experience requires some level of workload and consequently can be measured. Like other UX metrics and questionnaires, it's ideally used NOT to tell you what to fix, but will help you understand whether changes to an interface improved (or worsened) the workload. Workload, like usability, essentially means the amount of effort people have to exert both mentally and physically to use the interface.
Below are some standardized questionnaires to help gather insights into how our products are performing from the eyes of those using them.
Questionnaires
10 Item questionnaire aimed for measuring the perceived ease of use.
A quick measure of perceived difficulty.
NASA TLX (Coming Soon)
Assessment tool to rate perceived workload using six dimensions.
Goals
Overtime we will strive to develop thresholds that indicate when an experience moves from average to unacceptable. What is an acceptable or unacceptable workload.