We evaluate two variants of a school-based, intensive learning camp for pupils who are assessed 'not ready' for further education after compulsory school, using a stratified cluster randomized trial involving 15,559 pupils in 264 schools in Denmark. Next to training pupils in Danish and...

Winning bidders in online auctions frequently fail to complete the transaction. Because enforcing bids usually is too costly, auction platforms often allow sellers to make a "secondchance" offer to the second highest bidder, to buy at the bid price of this bidder, and let sellers leave negative...