Het Financieel Dagblad besteedt een lang artikel aan de betekenis van het CBF-Keur voor goede doelen naar aanleiding van de vraag: “Waar blijft mijn gedoneerde euro?” Het “keurmerk en boekhoudregels zijn geen garantie voor een zinvolle besteding”, volgens de krant. Verderop in het artikel staat mijn naam genoemd bij de stelling dat het CBF-Keur ‘fraude of veel te hoge kosten niet uitsluit’ en zelfs dat het ‘nietszeggend’ zou zijn.

Update, December 6, 2019: the paper discussed below reports an unlikely large effect size, and is co-authored by a researcher who has been investigated for research misconduct. The report does not mention this particular paper. Breaking news today: the essential amino acid L-Tryptophan (TRP) makes people generous!

Butterfly Blog This article first appeared on the website of the Fundraiser Magazin. Two twin sisters, Clara and Maria, are raised together at the same place, go to the same school, remain both in the same neighborhood. Yet, Clara is donating five times as much as Maria. Why is that? It’s probably because Clara is attending church service almost every week, whereas Maria, by contrast, makes a big circle around Lord’s house.

This post in pdf One day I cycled back home from work when I suddenly found myself in a curious situation. Shimmering in the gutter lay a folded €20 bill. It was just lying there, between the fallen leaves, in front of one of those expensive homes that I passed by everyday. It was as if the bill called out to me: ‘Pick me up!’ I saw nobody coming from the house. But the road was quite busy with cyclists.

This post was published earlier in the newsletter of the European Research Network on Philanthropy The 20 ^th century has seen a tremendous growth of scientific enterprise. The increasing productivity of scientists has been accompanied by a proliferation of academic disciplines.

Diving deep into my archives I recovered an old file in which I describe how I got to study prosocial behavior. The file is dated 21 February 2000. I reproduce it below – and here’s a pdf.

The recent success of the Ice Bucket Challenge for ALS across the world raises numerous questions on philanthropy. In this post I give some background information to answer five of these questions. 1. Where will it end? It is hard to predict how much money will be raised for ALS through the Ice Bucket Challenge.

Here’s CRAP: a new policy regarding review requests I’ve decided to try out. CRAP means Conditional Review Acceptance Policy, the new default response to review requests. I will perform review only if the journal agrees to publish the article in a Free Open Access mode – making the article publicly available, without charging any fees for it from universities, authors, or readers. Here’s the story behind CRAP.

scatterplot I’ve been active on Twitter regarding the well-publicized study that hurricanes with feminine names kill more people than hurricanes with masculine names.

Wereldwijd houdt een toenemend aantal wetenschappers uit zeer uiteenlopende disciplines zich bezig met filantropie. Deze trend zien we ook in Nederland. Wat is er in de wetenschap bekend over de achtergronden en de impact van filantropie? En hoe ziet het Nederlandse academische landschap eruit? In deze bijdrage geef ik een beknopt antwoord op deze vragen.

The PhD project will focus on characteristics of individual crowdfunders and of crowdfunding projects that influence donation behavior. Specifically, the research investigates the effects of online context characteristics on motivations and giving behavior of crowdfunders as well as the organizational arrangements in which crowdfunding campaigns are embedded.