Increase Your Sales With Usability Tests

UX Design | 03th June 2017

The digital reality in which we live in is something that provides the users with an ever-growing number of options to choose from, and foster a wide number of competitors who offer the same product or service just a click away. For these reasons, provide the best user experience is a market differential and a way to nurture loyalty among your customers.

When it comes to mobile apps, for instance, it is acknowledged that a negative experience is what it takes for them to never be used again. For instance, solely 16% of the interviewees, of this TechCrunch research, have said that they go back to an app after having endured a poor experience with it.

Usability is defined by the “extent to which a product may be used by specific users to reach specific targets with effectiveness, efficiency and satisfaction within a context of a specific use” (standard ISO 9241-11).

In addition to all these, there are two strong reasons that should make you take usability into account, right from the project’s beginning:

  • Cost reduction and development time, due to predictability
  • ​An increase in user and customer attraction and retention, due to a good experience

How can one analyze the usability of a product/service?

Here at Hi INTERACTIVE, the most common methods to assess the usability of a digital interface (application, site, system, app, etc.) are the expert analysis and the user interview.

The first is the Heuristic Analysis, where one of our usability experts conducts an analysis of the interface to be developed, assessing it based on the presence or absence of some heuristics, which are regarded as appropriate for each project. The second is to request real users to conduct certain tasks in contexts of specific use.

Each of these approaches has their pros and cons, with user testing being the option that provides the most comprehensive results, attuned to the real user needs. Nonetheless, this requires a higher workload, which is reflected in a slightly longer deadline. ​

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What is a Heuristic Analysis?

The Heuristic Analysis is an acknowledged and thorough practice which adds a great value to the project in a short period of time (although lacking the depth and the insights that are gathered when in touch with real users).

It is possible to outline good usability interfaces based on the outcomes of a Heuristic Analysis. However, since the user experience is quite encompassing, the ideal would be that each project had its own period devoted to research with real users, whilst having tests conducted with a mixed user group – which depict the product’s real target audience. All this should be developed under the supervision of a usability expert, which will translate the reactions, feelings, resourcefulness, struggles, conveniences and questions of the users, gathered in a list made of issues to be solved and opportunities for improvement.

In an even more positive scenario, this work is carried before the launch of the IT Development. This makes it possible to identify all insights before one devotes tons of hours to development purposes, hence allowing the execution of the identified changes without causing a major impact on the project’s budget.

How should one carry out the tests?

The specific goal of each test depends on components which need to be individually analyzed, for each project, and that should create a balance between:

users – goals – context of use

A common question, which ends up emerging, is related to the number of participants needed to perform a test. According to Jacob Nielsen, testing with 3 to 5 individuals (representative of each profile on the target audience) is the best cost-benefit ratio when the project does not have a budget to accommodate more comprehensive tests. Having in mind this indication, we usually suggest the participation of around 10 participants for each test, to make sure that at least 3 different participant profiles are analyzed.

Usability problems found x number of user tests
Why you only need to test with 5 users

When are the tests deployed?

The tests can be directly performed in the user’s real environment (real context of use) – if they allow so – or at the headquarters of Hi INTERACTIVE. Usually, when performed in the company’s office, users have the tendency to mask negative reactions, something that ends up impairing the test’s final result.

What sort of tests can be applied?

There are several sorts of approaches to conduct user tests:

  • Pre-project user testing
  • Pre-development user testing
  • Pre-launch tests user testing
  • Post-launch A/B testing  

Each project will be better addressed, within their own technicalities, if one of these options is met or if a combination of some of them is used.

What sort of benefits can I have if I decide to invest in these tests?

The number one benefit of these user tests is the chance to argue and make decisions based on facts and not on the opinion of every stakeholder. Furthermore, it allows ascertaining beforehand if what one is offering is actually what the customer is willing to use (and pay for), along with the opportunity to have a better knowledge of your customers, to know how they think, to how they use the interface and their relationship with the technology.

This concentrated effort to understand your real needs usually has a quite singular return on investment, since your customers will be more engaged, as well as a lower development and maintenance cost, reducing the changes identified only through customer complaints.

Studies prove the high financial return when one effectively relies on usability. Therefore, investing in UX is not only for “major companies” or more “advanced” projects, rather a proper advantage for any project regardless of its size.


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