Some researchers have developed a probabilistic model, a traffic multiplication term, for conflicts at urban uncontrolled intersections. However, such estimates lack theoretical bases and depend only on researchers' professional judgements. Few researchers have empirically observed the behaviour...

The small extant literature on the working hours of self-employed workers is deficient, because it often lacks a clear theoretical underpinning and suffers from three common mistakes: including the hourly wage as an explanatory variable, controlling for input factors of production, and not...

The small extant literature on the working hours of self-employed workers is deficient, because it often lacks a clear theoretical underpinning and suffers from three common mistakes: including the hourly wage as an explanatory variable, controlling for input factors of production, and not...

Granger and Sims noncausality (GSNC), a concept frequently applied in time series econometrics, is compared to noncausality based on concepts popular in microeconometrics, program evaluation, and epidemiology literature (potential outcome noncausality or PONC). GSNC is defined as a set of...

Granger and Sims non-causality (GSNC) are compared to non-causality based on concepts popular in the microeconometrics and programme evaluation literature (potential outcome non-causality, PONC). GSNC is defined as a set of restrictions on joint distributions of random variables with observable...