{"id":755,"date":"2021-01-06T11:57:25","date_gmt":"2021-01-06T11:57:25","guid":{"rendered":"https:\/\/artattackk.com\/blogs\/?post_type=uiux&p=755"},"modified":"2024-07-15T15:28:18","modified_gmt":"2024-07-15T15:28:18","slug":"learnability-of-a-user-interface","status":"publish","type":"uiux","link":"https:\/\/artattackk.com\/blogs\/ui-ux\/learnability-of-a-user-interface\/","title":{"rendered":"LEARNABILITY OF A USER INTERFACE"},"content":{"rendered":"

\u201cA user interface is like a joke. If you have to explain it, it\u2019s not that good.\u201d<\/i><\/p>\n

– Martin LeBlanc<\/i><\/p>\n

Usability is the ability of a system to help users achieve their goals effectively, efficiently, and satisfactorily. (<\/span>ISO 9241<\/span><\/a> Part 11)<\/span><\/p>\n

Learnability is the ability of a system to help it\u2019s users accommodate with the system interface measured over a period of time and interactions.<\/span><\/p>\n

In the previous article, we saw how <\/span>Systems Usability Scale<\/span> helps measure the usability of the system. In this article, we intend to learn about the Learnability of a system. (pun intended).<\/span><\/p>\n

WHAT IS LEARNABILITY?<\/b><\/h3>\n

Ideally, people should get accustomed to the user interface and remember it\u2019s functionality on their first interaction with the same.<\/span><\/p>\n

Imagine your users understanding the navigation and the structure of your app on their first use and never have to contact support.<\/span><\/p>\n

This rarely happens in the real world. And, that\u2019s\u2019 where the learnability factor comes in. Learnability helps us understand how users perform a task and accomplish their goals on the first use of the app (or the system) and how many repetitions do they require to be proficient at the same task.<\/span><\/p>\n

LEARNABILITY \u2260 USABILITY<\/b><\/h3>\n

\"LEARNABILITY<\/p>\n

While usability tells us how easy to use a system is, learnability tells us how easy to learn to use the system is.<\/span><\/p>\n

Even if learnability and usability are two different concepts, the high learnability of a system contributes to its usability.<\/span><\/p>\n

That is because a system that\u2019s easy to learn requires low training cost and quick onboarding.<\/span><\/p>\n

HOW TO MEASURE LEARNABILITY?<\/b><\/h3>\n

\"MEASURE<\/p>\n

Measuring learnability requires two parameters. Time and number of repetitions. The graph drawn with the help of these two parameters is known as the learning curve.<\/span><\/p>\n

(This learning curve shows the hypothetical completion time for a backup as a function of the number of task repetitions (or trials). Notice that the time for the first repetition is longest, and then the completion time decreases \u2014 by trial 4, it levels off, reaching the saturation plateau. Although details such as how many repetitions are needed to reach saturation will vary from case to case, this learning curve is representative of all human learning.) (Credits – <\/span><\/i>www.nngroup.com<\/span><\/i><\/a>)<\/span><\/i><\/p>\n

As per <\/span>Alita Joyce<\/span><\/a>, there are 3 aspects of learnability:<\/span><\/p>\n