Team: Gabrielle Bennett/ Moxue Jia/ Sebastian Ervi/ Zhaolu Song
Brief: Using the taxonomy of behaviour change techniques (BCTs) design a digital system that encourages behaviour change.
Time: 12.03.2021-18.03.2021
Last week, we designed some lo-fi prototypes, and this week we will test these prototypes and iterate.
Testing
Based on the food sharing system we designed last week, we decided to split it into three features, Buddy system for cooked food, Mystery bag for multi-raw food and individual ingredient, and then test separately. At first, I suggested testing ideas with real target users by sticking posters and recruiting users to actually share food, however, it was considered too time-consuming and difficult to execute during the pandemic. Instead, we conducted interviews with friends about hypothetical situations.
Interviews with others. Image by team.
During the interview, I found people do want to share the food they can’t consume instead of wasting it, but they also worried about the safety of meeting other people. It made me feel sad and sorry for our society that people want to do kind things but are impeded by uncertain danger. As designers, the first thing we need to consider is not how to design but external factors that affect people will use a design or not.
Besides, interviewees also pointed some features that need to improve, such as the distance between giver and receiver, the chatbox, expiration food, etc. At first, it was a bit overwhelming for me to solve all the problems, so John suggested us to select some problems which are related and necessary about behavior change to solve.
Reduce BCTs
We applied many BCTs in our design, but some were not used precisely and not impactful. So, we decided to converge BCTs into the five most powerful ones based on our previous research (card sorting, co-design, articles) and the relevance to our design.
BCTs I selected. Image by me.
After discussing with my teammates and consider everyone's opinions, we selected these five BCTs to apply to our design.
1.4 Action Planning
3.2 Social Support (Practical)
5.3 Information about social and environmental consequences
7.1 Prompts/Cues (associated with 8.3 Habit Formation)
13.2 Framing/Reframing
The BCTs I found interesting are 3.2 social support and 5.3 Information about social and environmental consequences, which were also preferred in the previous interview. These BCTs are related to other people who belong to the external environment and our design aims to deliver love to others by sharing food to reduce food waste, so they are compatible in a social way.
Iteration
According to the feedback, we changed our design and focused on the features related to the BCTs we selected.
BCT "7.1Prompts/ Cues + 8.2 Behavior substitution" in Mystery bag.
Design by Moxue and me.
BCT "3.2 Social support" in Mystery bag. Design by Moxue and me.
BCT "10.4 Social reward." in Mystery bag. Design by Moxue and me.
This week, we made big progress in design and got positive feedback. Some said the love in food is back! Alaistair suggested we expand the scope, involve more needed people to share the love. Besides, John advised us to map BCTs in design in an articulated way and think about how to make it replicable to apply that in a different situation.
Next week, we will synthesis these three features and unified the interfaces, and be ready for the final presentation!
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