Andreas Bergh is associate professor in Economics at Lund university and fellow at the Research Institute of Industrial Economics in Stockholm.

His research concerns the welfare state, institutions, development, globalization, trust and social norms.

He has published in journals such as European Economic Review, World Development, European Sociological Review and Public Choice. He is the author of 'Sweden and the revival of the capitalist welfare state" (Edward Elgar, 2014).

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nov022013

Om 3:1 kvoten som kan förändra ditt liv

Här är en festlig sajt om en flygplatsbok med två tydliga varningstecken:

1. Den bygger på en skum matematisk konstant som ska förklara något beteende

2 Författaren skriver ut PH.D. i versaler på omslaget.

image

Mycket riktigt: Här är en synnerligen välskriven artikel om en student vid namn Nick Brown som fick höra om positivitetskvoten och tänkte att det måste vara bull-shit.

Ett utdrag:

“For me, the real question is not about Fredrickson or Losada or Seligman,” Sokal says. “It’s about the whole community. Why is it that no one before Nick—and I mean Nick was a first semester part-time Master’s student, at, let’s be honest, a fairly obscure university in London who has no particular training in mathematics—why is it that no one realized this stuff was bullshit? Where were all the supposed experts?”

“Is it really true that no one saw through this,” he asks, “in an article that was cited 350 times, in a field which touts itself as being so scientific?”

Jodå, studenten slog sig ihop med ingen mindre än Alan Sokal (och Harris Friedman) och skrev en artikel som hävdar att denna PH.D. Fredrickson använt differentialekvationer för att ge trovärdighet åt sin teori om att man mår bäst om kvoten mellan antalet positiva och negativa tankar ligger mellan 2.9013 och 11.6346 (wiki)

Ur abstract till Brown, Sokal & Friedman (2013):

We examine critically the claims made by Fredrickson and Losada (2005) concerning the construct known as the “positivity ratio.” We find no theoretical or empirical justification for the use of differential equations drawn from fluid dynamics, a subfield of physics, to describe changes in human emotions over time; furthermore, we demonstrate that the purported application of these equations contains numerous fundamental conceptual and mathematical errors.

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