Cecilien-Gymnasium Düsseldorf (2018)

Second Place of the YES! 2018

“Transactions via the Internet – How Can Trust be Built?”

The main problem, which results in the lack of trust, is “asymmetrical information”. This means that one party might know more about a product (retailer), than the other party (buyer).

We believe that the root of the problem can be found in feedback systems. According to a study from the Hong Kong University, 80% of the customers who plan to buy a product online, consult reviews. Thus our idea focuses on increasing the motivation for reviewing and ensure that the feedback is constructive and trustworthy.

Our solution, “1Feedback”, is an interactive and transparent multi-platform feedback system, which reviews sellers. Online retailers can outsource their feedback system and utilise “1Feedback” as a plug-in on their respective platforms. The users are able to write reviews, but they are also able to up- and downvote reviews and also comment on them. As a security mechanism, users can only access the pages of sellers, from which they already ordered products in the past.

A point system will reward a user depending on the up/downvote balance (=upvotes minus downvotes) and the number of times he reviewed or gave up/downvotes. After a certain threshold, the user rises up, and his profile will be certified as a “Level 2-profile”. If the user continues to advance, he will receive at a certain level a financial reward, for example, discounts, money and etc. Another element of gamification are badges, which a user can get for fulfilling special “quests”.

Our concept has many advantages. “1Feedback” can be implemented with ease and is cost-efficient for online retailers, as it creates synergy effects. But most importantly, the feedback rate will rise, and the reviews will become trustworthy, as the users of “1Feedback’ aspire to get rewards and thus to receive as many upvotes as possible. Effectively, the information gap between buyer and seller shrinks and the Internet will be trustful and a fair place for trading.


“The Market for Lemons”, George A. Akerlof, 1970, Berkeley

“What drives consumers to spread electronic word of mouth in online consumer-opinion platforms”, Christy M.K. Cheung, Matthew K.O. Lee, 2012, Hong Kong

https://www.provenexpert.com/de-de/blog/die-bewertungsquote-zahlen-und-fakten-zu-einem-mysterium-des-e-commerce/ , accessed: 17.07.2018

Photo: (c) YES! / Kai Meinke

The team selected this topic

Transactions via the Internet – How Can Trust be Built? (2018)

For transactions to take place, the market players involved must have a minimum degree of confidence in the respective exchange partner. Only if someone is confident that he or she will receive the desired product or service in a satisfactory quality they will agree to the transaction. That is not to be taken for granted! There are many situations in which one side of the market has more information than the other. A well-known example from the economic literature is a second-hand car market, where buyers cannot identify a car’s quality easily. In the course of digital transformation, this problem seems to be aggravated: Buyers and sellers often remain anonymous. In most cases, there is at least no personal contact that could help building trust. Therefore, it is worth taking a closer look at the solutions that have emerged in the digital world: What do they look like and how well do they work? What other solutions are imaginable?

The Team

This is the introduction of the YES! 2018 team of the Cecilien-Gymnasium Düsseldorf.
Our topic is online transactions and how trust can be established. We look forward to
come up with an innovative solution to this question with the help of Rebekka Rehm and
Clemens Recker, researchers at iwp Institute for Economic Policy at the University of

Photo: (c) Team Cecilien-Gymnasium Düsseldorf

Leontij Potupin, age 16
„The internet changed and improved how humans
interact with each other. Transactions via the internet
and online-shopping make up a great deal of our
economy. Therefore we need to find ways to assure
that quality is sustained by providing more
transparency and enabling trust. The YES! is the
perfect platform for us to voice our ideas and

Photo: (c) Team Cecilien-Gymnasium Düsseldorf

Nick Döring, age: 17
„Hey, my name is Nick Döring. I have always been
interested in economics and innovative ideas for the
future. YES! 2018 gives me the opportunity to
participate actively in the process of creating new
concepts and acquiring deeper insight into the world
of scientific research.
Finding the best ways to ensure trust in transactions
via the internet, is a key factor for establishing a
successful business in that segment.“

Photo: (c) Team Cecilien-Gymnasium Düsseldorf

Bahaeddine Khammari, age: 17
„My name is Bahaeddine Khammari, and I’m
participating in YES 2018, because I want to
contribute to the future of our rapidly-changing
economy and YES offers the perfect platform for this.
The question, how to gain trust in online markets
interests me in particular as it is important to deal with
this sector in the wake of digitisation.“

Photo: (c) Team Cecilien-Gymnasium Düsseldorf

Anton Gloyer, age: 16
„Digitisation causes a constantly developing world and
changes everything we do. Especially transactions via
the internet have become one of the most important
topics of todayʼs economy. Trust and the right
communication are crucial for trade. YES! 2018 gives
us an opportunity to solve problems concerning
digitisation and our future.“

Photo: (c) Team Cecilien-Gymnasium Düsseldorf

Constantin Ballhaus, age: 16
„A market can only be preserved if all players
have trust in one another to negotiate fair
transactions. However, accomplishing this is
challenging for an online market. Consequently,
removing factors such as asymmetrical information,
which gives one party an advantage over the other, is
indispensable for the endurance of said markets.
Through the platform of the YES! we can ideally
present our concepts on how to do just that.“

The Cecilien-Gymnasium is a school with about 1000 students in
Düsseldorf. One of its most important features is its international
orientation: it is a “Europe school”, offers bilingual education and
encourages student exchanges.
There are various societies and competitions in which the students can
engage in and show commitment.
Their team is participating the first time at the Young Economic Summit.

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