behavioural research lab

Field Experiment at World Youth Event 2023

August 20, 2023


During the World Youth Event 2023 in Lisbon, at the Forgiveness Park, the research team composed of Sandra Maximiano (ISEG), João Pereira dos Santos (ISEG), António Silva (ISEG) e Susana Peralta (NOVA SBE), conducted a field experiment with the pilgrims.

To incentivize the behaviour of the participants in the experiment, we promised to select 22 lottery winners: 11 individual prizes and 11 NGO prizes. The winners of NGO prizes will be announced on September 20th on the xlab website.

On the 18th of August, we selected the winners of the individual lottery. The first 10 winners won a voucher of 50 euros each and the 11th winner won a voucher of 500 euros. Participants´ lottery number appears on the card they received at the end of the experiment. The winners are posted in the order that they were drawn:

Winners of the 50 euros vouchers: P949, P349, P679, P971, P536, P1386, P680, P1129, P1320, P1271

Winner of the 500 euro voucher: P979

Many thanks to all participants and congratulations to the winners!

If you are one of the winners, please send an email to passda.xlab@gmail.com with a photo of the card that you received at the end of your participation.

Watch the video of the Individual Winners Lottery!


Forever Young, by Carlos Lourenço

April 11, 2022

From brands to colleges to charity organizations or even political parties and politicians, nowadays virtually all those who need to reach an audience often employ modern communication strategies that include video ads featuring music, in particular, excerpts of songs that were popular at some point during the target audience’s coming-of-age period, the developmental stage that goes from adolescence to early adulthood.

But how does this strategy work? And, does it always work?

The much-promised effectiveness of such widespread practice aimed at grabbing the attention of video ad viewers is anchored on research in social and economic psychology, marketing, and related fields showing that consumers have strong preferences for information and cultural goods they first experience or are exposed to during their coming-of-age.

For instance, popular songs that hit the charts and that individuals listen to during that formative period appear to remain preferred throughout life. Past studies have suggested that these peaked preferences for popular songs are associated with those songs’ ability to evoke strong autobiographical memories and their accompanying emotions.

In a series of multi-method experimental studies that collected not only self-reported ad- and brand-attitudes but also actual brand name recall and blood oxygenation of brain areas, our team has challenged this simple view and has proposed and validated a more nuanced process by which coming-of-age songs in video ads may enhance their effectiveness.

Specifically, we have shown that song-evoked coming-of-age memories and emotions — and brand recall — are not affected by a video ad’s “coming-of-age song” — one that became popular when the video ad viewer was an adolescent to an early adult — directly or per se, but through the greater familiarity with that song that makes viewers like that song more.

In other words, an unfamiliar song, even if it became popular when a video ad viewer was coming-of-age, will not do.

Our studies have also revealed other limits to the coming-of-age music-based communication strategies. Specifically, video ads that play treasured coming-of-age songs but have a poor production that makes it blatant what their strategy is, have no greater effectiveness among viewers of the same age than video ads that play popular songs from other time periods.

Consumers’ acceptance of online pension investment advice relies on firm characteristics

May 15, 2019

While accounting for interaction satisfaction and demographics, C. Lourenço, B. Dellaert, and B. Donkers find that consumers’ perceptions of trust in and expertise of a firm providing online pension investment advice are important drivers of advice acceptance, and that these two constructs are clearly influenced by two key firm characteristics, profit orientation (for-profit vs. not-for-profit) and role in the sales channel (product provider vs. advisor-only).

Interestingly, and according to the data from large-scale survey-experiments, a ‘for-profit’ orientation can be seen as a double jeopardy for advisors because it negatively impacts consumer perceptions of both expertise and trustworthiness.

Find out more here.

Women earn more than men in a matrilineal society

May 14, 2019

This is one result of the paper “On the Cultural Basis of Gender Differences in Negotiation” by S. Andersen, S. Ertac, U. Gneezy, J. A. List, and S. Maximiano, recently published in Experimental Economics. The authors use data from a lab in the field experiment and a natural field experiment to explore the negotiation culture in matrilineal and patriarchal societies, and to study how culture and social structure influence bargaining behaviour across gender. Paper available here.