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The first Behavioral Science competition of l.


Behave! Portugal is a challenge centered on applying insights from Behavioral Economics and Behavioral Science,  open to students and graduates of all areas, who are motivated to make impact in human-centered way.
The challenge will take place during the Nudge Week 21' (Nudge – O Poder da decisão), a series of seminars, talks and live events organized jointly by Expresso and Nudge Portugal. 

Apply here ->



Behave! Portugal is the first hackathon directed to graduates of all fields that revolves on using nudges to solve real social and business problems. 
The challenge takes place as part of the second edition of the event Nudge – O Poder da decisão, jointly organized by Expresso and Nudge Portugal: days of conferences that addresses the use of applied behavioural science to different verticals of the Portuguese market. The sponsors, some of the leading organizations of Portugal, research and provide a common hot-topic that is impacting the Portuguese economy the scope of the competition is coming up with solutions. 


Behave! Portugal is a behavioural design and change competition, in which teams develop solutions to real-life issues. In a time-pressured environment, the teams will have to design a creative solution, leveraging behavioural science, that should be: 


  • Applicable: Your solution can and should be easy to implement.

  • Testable: Your solution needs to be robust and testable against the current state of things. 

  • Impactful: Your solution needs to have the potential of having a substantial impact on society. 


The primary purpose of Behave! Portugal is to produce innovative and feasible solutions to a common problem that some of the most relevant companies in Portugal are currently facing across several industries. The value added to behaviourally-aligned solutions is the ease of implementation, the lower cost and the testable impact. 


The competition will have 2 phases:  

  1. Phase 1 (Pre-selection): employ your creativity and skills to address a problem that is afflicting the country. Your goal is to be creative, innovative and behaviourally aligned. Demonstrate that you can harness the power of Nudges!

  2. Final Challenge: A real challenge provided by the partners. You’ll receive support, mentoring and advice on your idea. Divided in steps, and taking place during the Nudge week 21’. Finalists will be broadcasted when presenting their solution!


COMING SOON!! Stay tuned


Fill the form 

The competition is meant to be solved as a team! 
You can participate in teams of 2 to 5 people maximum; in case you want to participate but haven’t got a team yet, you can do the preselection alone nevertheless: we’ll help you match with other participants that passed the preselection! 


Of all the plastic we produced only 9% has been recycled. Furthermore, every year the world is producing more and more plastic. The consequences are severe, from damaging human health by releasing toxic chemicals to contaminating the soil. It has been estimated that more than 100 million tonnes of plastics are produced for single use purposes. There is an increasing trend of consuming food in disposable take-away food packages and one of the most critical environmental aspects related to this type of packaging is waste generation. There is a need to consider alternative solutions to singleuse plastic take-away food packaging. From July of 2021, a new law will be in place in Portugal to help reduce the usage of single use plastic: Any food retailer will be obliged to accept personal containers in a take-away order. Your challenge is to use behaviour science and nudge theory to come up with creative and real solution to increase the usage of personal containers when getting take-away food. This is a global challenge and we do understand that there is no one cure to solve this problem. Nevertheless, facing a large problem is like eating an elephant; You take one bit at a time.
We’re more interested in seeing your creativity and ability to reason under the nudge framework rather than coming up with a complete solution.

Please submit your creative ideas in a video format (no more than 90 seconds), and/or as a PowerPoint presentation (max 3 slides) where you should answer the following points:   

  1. Describe the human behaviour/situation being nudged. 

  2. Describe the intervention and why it may work. 

  3. How would you tested and measure the results?