User experience methodologies

An introduction to tree test

Information

Introduction

Tree test is the perfect method to get the insights you need to build an intuitive information architecture. For best results, a card sort should be followed up by a tree test to evaluate the proposed menu structure. A tree test evaluates a hierarchical category structure by having users find the locations in the tree where specific tasks can be completed.

How it works?

To conduct a tree test, you don’t need to sketch any wireframes or write any content. You only need to prepare two things: the tree, or hierarchical menu, and the tasks, or instructions which explain to study participants what they should attempt to find.

When to use?

Although the information that emerges after card grouping is sufficient to create a new information architecture, we need to verify this information with a tree test. While creating the test, it is necessary to create questions for the users in line with the objectives of the project or by addressing the problem areas that arise in the card grouping study.

Mobile Campaign App

Case Study

Test Scope

A Tree Test of 110 people in total was conducted and deficiencies and good points in 3 different information architectures were determined.
By testing these 3 information architectures, availability comparison with the old tree was made.

Preparation

New information architecture has been created in three different concepts, consisting of "for you", "my profile" and "notifications". For each of these concepts, 12 user task questions were created and tested online with 110 people.

Graphics Overview

Overall Time Taken

Lower Observed time:      1.88
Lower Quartile:                  2.50
Median:                               4.13
Upper Quartile:                   8.92
Highest observed time:  32.27

Overall Success

Shows the rate of users marking the correct answer.

Overall Directness

It shows the rate at which users turn to the direct answer or hovering over the answer.

Users who go directly to the correct answer without diverting to other places.
Users who deviate to other places and find the truth after wandering around.
People who browse and look through some places in the menu and then still choose the wrong answer.
Users who go directly to the wrong answer without browsing.
Users who passed the question directly.
Users who remain unstable and pass the question.

Tasks Overview

Task 1: You need a new credit card and you want to do this through the application without going to the branch, how do you follow this process?

Task 2: You want to make a change in your address defined on your credit card, how would you do it?

As shown in the graph, the tree test gives us information about what information users are looking for. In this example, users expect to be able to change their credit card addresses on their credit card settings and the settings page. In information architecture, an action can be located in different areas.

Results

A New Information Architecture
In the tests, the third concept on the navigation bar got the best score with 76% correct answers.
Content Naming
The general search process of users is the same as the word of the action that is sought-considered.
For example, the person who will make a transaction related to a credit card is looking for this action in the field of credit cards or cards.
Numbers talk
The first concept achieved a 58% success rate, the second concept 67% and the third concept 78% success rate in the three information architecture concepts created. In line with these results, new information architecture and flow has been created and application design has been made.

Projects Used In

Tool Kit

Usability hub
Optimal workshop
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