This book is written in commemoration of Karel Jansen. It was originally planned as a Liber Amicorum for his retirement in 2011 to honour a valued and productive colleague, teacher and researcher. After Karel's sudden death the contributors decided to do just that and go on with the production...

We collected 95 primary studies that deploy the gravity model and use a dummy for islands as a controlling variable. Our analysis rejects the presence of (publication) bias in the empirical literature. The primary studies reveal a statistically positive and economically meaningful meta effect....