Usability Test

An outline for the usability test for the Walking Stool prototype has been established, to assess its functionality, stability, and user experience. The test is divided into two parts:

Part 1 focuses on objective measurements and functional aspects, such as weight, stability, ease of use, and structural safety to see to what extent the prototype matches the design requirements. These questions will be answered by the designers of the prototype.
Part 2 gathers qualitative feedback from the case owner, evaluating first impressions, clarity of function, and potential areas for improvement.

Part 1: Objective measurements

What is the weight of the product?
- Around 3 kilograms. This is far over the desired weight but was taken into account. With a new prototype a different material should be used to allow more accurate user testing in walking with the stick.
Are there any sharp edges or points that could cause discomfort or injury?
- There are no sharp edges on the prototype.
On a scale of 1-10 how easy is it to complete the task of opening and closing the mechanism?
- The 3d printed closing mechanism is very easy to open and close, so a 7. However, the mechanism used in the metal prototype is harder to open, because the legs will go in every possible direction. There is nothing that keeps the legs in the right place when opening or when it is closed, so it is a 5.
Do the feet of the prototype slide on different surfaces?
- Because of the plastic used the prototype will have less grip on smooth surfaces. This will be resolved in the final product when rubber will be used.
What is the maximum weight the prototype can support?
- A person between 50-70 kg can put their full weight on it for a short period of time. This has to do with the strength of the seams. To resolve this, the seams should be reinforced or a different sewing pattern should be used.
What is the seating height when the seating function is in use?
- The highest point on the end of the poles is around 52 cm high. When the fabric is stretching in the middle the seat the height is 47 cm high. This is a bit lower than the desired height.
Is the product stable on the ground when the seat function is being used?
- Yes, it is stable.
Does the handle provide a comfortable grip?
- The handle is a bit wobbly because it is not attached optimally. Nonetheless, the handle is comfortable because it can be held in different positions. For long periods of time, the handle might get uncomfortable. To find this out more testing needs to be done.

Part 2: Qualitative feedback from co-designer

Introduction

The usability test was conducted in collaboration with the co designer to assess the first impressions, usability, and potential improvements of the prototype of the Walking Stool. The co designer provided feedback on the design and functionality, as well as her general insights. Due to time constraints, this part of the usability test was conducted online. The co designer was provided with detailed pictures of the final prototype and asked to answer the following questions:

What is your first impression of the product?

What did you like about the product?

What did you not like about the product?

Is the function of the product unclear or confusing?

Would you consider going out to the forest with a product like this?

If you could change anything about the product, what would you change?

Do you have any final comments or suggestions?

Key Findings

First Impressions

The co designer expressed strong interest in the prototype and appreciated the combination of a walking stick and a chair. The wood-like finish and the colour choices were details that she mentioned as positive design choices.

Positive Aspects

The dual function (walking stick and stool) was received well and found helpful for extending independent walking distances.
The concept was clear and fulfilled the co designer needs.
The co designer was excited to use the product outdoors, such as in a forest, indicating confidence in its practicality.

Areas for Improvement

Handle Design: The co designer found the handle uncomfortable to hold and aesthetically unappealing. She associated its half-round shape with an older user group.
Additional Cover: A plastic cover for the product, which could be removed while using the seating function, was suggested.

Usability

The case owner found the product intuitive and she understood its function well.
Her willingness to take it on outdoor trips in the forest suggested that the product is perceived as stable and reliable.

Recommendations for Further Improvement

Based on the case owner’s feedback, the following design improvements can be considered:

Redesigning the Handle: Alternative handle forms that provide a more ergonomic design while maintaining a modern and stylish appearance can be explored. Designs that can be associated with an older user group should be avoided.

Removable Cover: Integrating a removable plastic cover, which can be detached when sitting, can be added to the design. This solution would also improve the lifespan of the product, making it last longer without being deformed.

Conclusion

The usability test provided important insights into the product’s strengths and areas for development. The case owner was pleased with the overall concept, she appreciated its aesthetics and functionality. However, redesigning handle ergonomics and aesthetics and additional attachments would further improve usability and user satisfaction. Additionally, stronger and lighter materials should be used for the final product, such as aluminium tubes instead of steel, and Poly Canvas for the seating material.