A paper of mine, The Effect of Casual Teaching on Student Satisfaction: Evidence from the UK, has recently been published in Education Economics.
The paper evaluates the relationship between the proportion of university teaching conducted by individuals on a casual contract (*) and student satisfaction. This is of interest for a number of reasons. Firstly, because students are often seen as consumers in the UK’s higher education sector and often have to pay large fees to attend university. We should therefore hope that such consumers are satisfied with their purchase (in economic terms), or in other words, that students are satisfied with their uni experience. [...]
In this article I will explain how to interpret regression coefficients when dealing with variables that have been logged.
Why would we work with logged variables? Firstly, we might take the log of a non-linear model, to make it linear in parameters, to satisfy the Gauss-Markov assumptions (these are required for the OLS method of estimation to be the BLUE – the best linear unbiased estimator). Secondly, as we will see below, it can sometimes be easier to interpret coefficients which have been logged, as we can talk about percentage changes, which might make more sense than talking about unit changes, in some contexts. [...]
Each product that exists can be classified into a market in which it competes with other products for the attention of consumers. For instance, apples might be considered a snack-fruit and compete with items including pears and bananas. In other words, if the price of apples increased then demand would substitute towards one of these other products. The market for apples, would thus include these other fruits which substitution can easily happen.
Such substitution means that apple producers are restricted in their ability to increase prices. Increasing prices too much would result in this demand substitution towards other products.
On the other hand, other products might have a more restricted market. [...]
This blog posts explores some questions behind an article written by Levy Yeyati and Pienknagura – Wage compression and the decline in inequality in Latin America: Good or bad?“. We summarise the authors claims behind the decline in Latin American income inequality, and explain whether the decline is good or bad for Latin America.
The authors claim that there are 3 possible factors behind the decline in Latin American income inequality: increasing access to education, a decline in the demand for skill-intensive industries or a worsening of the educational system. Before we analyse these effects, it is important to note that the compression of the educational premium only accounts for half of the decline in inequality, so other factors must also be involved. [...]
Standard texts of price discrimination see it as beneficial in a social welfare sense: consumer surplus is transferred to producer surplus, but the fact that quantity increases is good for social welfare (as it reduces the deadweight loss triangle). Interestingly, this isn’t the whole story. Tullock pointed out, a number of years ago, that social welfare loss can originate from the rent-seeking activities of those that are trying to capture these rents.
For instance, in a monopoly setting, standard economic theory would say that the cost of monopolies comes from the reduction in quantity sold (as a result of higher prices), leading to a loss of social welfare. [...]
A paper of mine, “The Adaptive Investment Effect: Evidence from Chinese Provinces“, co-authored with Dr Kamiar Mohaddes, has recently been published in Economic Letters.
In the paper, we outline that the Adaptive Investment Effect (AIE) is the diversion of investment resources from productive to adaptive capital in response to the effects of climate change. We would expect this diversion to reduce the productivity of investment on economic growth.
For instance, we can imagine that climate change might increase temperatures in some areas. It is well known that higher temperatures reduce labour productivity and so to ameliorate this loss in productivity, firms might invest in air-conditioning units in offices. [...]