Lars P. Syll

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Getting causality into statistics Because statistical analyses need a causal skeleton to connect to the world, causality is not extra-statistical but instead is a logical antecedent of real-world inferences. Claims of random or “ignorable” or “unbiased” sampling or allocation are justified by causal actions to block (“control”) unwanted causal effects on the sample patterns. Without such actions of causal blocking, independence can only be treated as a...

If you can’t devise an experiment that answers your question in a world where anything goes, then the odds of generating useful results with a modest budget and nonexperimental survey data seem pretty slim. The description of an ideal experiment also helps you formulate causal questions precisely. The mechanics of an ideal experiment highlight the forces you’d like to manipulate and the factors you’d like to hold constant. Research questions that cannot be answered by any...

The Rivers of Belief .[embedded content]

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The Keynes-Tinbergen debate on econometrics It is widely recognized but often tacitly neglected that all statistical approaches have intrinsic limitations that affect the degree to which they are applicable to particular contexts … John Maynard Keynes was perhaps the first to provide a concise and comprehensive summation of the key issues in his critique of Jan Tinbergen’s book Statistical Testing of Business Cycle Theories … Keynes’s intervention has, of...

The randomization tools economists use Preference-based discrimination is based on the fact that, for example, employers, customers, or colleagues have a dislike for those who belong to a certain group. Such discrimination can lead to wage differences between discriminated and non-discriminated groups. However, competition can undermine these wage differences, as non-discriminatory employers will make greater profits and drive discriminatory employers out...

He ain’t heavy, he’s my brother (personal) .[embedded content] In loving memory of my older brother Peter Pålsson (1955-2001) But in dreams, I can hear your name. And in dreams, We will meet again. When the seas and mountains fall And we come to end of days, In the dark I hear a call Calling me there I will go there And back again.

Contrary to the tenets of orthodox economists, contemporary research suggests that, rather than seeking always to maximise our personal gain, humans still remain reasonably altruistic and selfless. Nor is it clear that the endless accumulation of wealth always makes us happier. And when we do make decisions, especially those to do with matters of principle, we seem not to engage in the sort of rational “utility-maximizing” calculus that orthodox economic models take as a...