Browsing by Author "Öberg, Stefan"
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An introduction to using twin births as instrumental variables for sibship size
Öberg, Stefan (2017-04)Some families who experience a twin birth get one more child than they had intended and planned for. This is the reason why twin births are used to create instrumental variables (IVs) for the number of children in a family. ... -
Instrumental variables based on twin births are by definition not valid
Öberg, Stefan (2018-04)Instrumental variables based on twin births are a well-known and widespread method to find exogenous variation in the number of children when studying the effect on siblings or parents. This paper argues that there are ... -
Mortality among European settlers in pre-colonial West Africa: The “White Man’s Grave” revisited
Öberg, Stefan; Rönnbäck, Klas (2016-08)We have created the first longitudinal dataset following European employees of the English Royal African Company during their time in West Africa, 1683–1766. The mortality was catastrophically high with limited geographical ... -
Social Bodies. Family and Community Level Influences on Height and Weight, Southern Sweden 1818-1968
Öberg, Stefan (2014-03-13)This dissertation consists of an introduction, four research papers and one paper describing the data I collected for the studies and how I conducted the study. I collected information on men from conscript inspection lists ... -
Too LATE for Natural Experiments: A Critique of Local Average Treatment Effects Using the Example of Angrist and Evans (1998)
Öberg, Stefan (2019-11)There has been a fundamental flaw in the conceptual design of many natural experiments used in the economics literature, particularly among studies aiming to estimate a local average treatment effect (LATE). When we use ...