of misclassification depends on individual characteristics. We extend the framework to mul-tiple treatments. We provide results to bound the returns to a number of educational qualifications in the UK semi-parametrically, and by using the unique nature of our data we assess the plausibility for the two biases from

Yahoo Answers (YA) is a large and diverse question-answer forum, acting not only as a medium for sharing technical knowledge, but as a place where one can seek advice, gather opinions, and satisfy one’s curiosity about a countless number of things. In this paper, we seek to understand YA

Bilateral, product-level data exhibit a number of strong patterns that can be used to evaluate international trade theories, notably the spatial incidence of “export zeros ” (correlated with distance and importer size), and of export unit values (positively related to distance). We show

In loving memory of my beloved father, Mr Daniel Zamani Ankut, who left too soon to share the joy of this achievement … and for Hilda and Harrison, my niece and nephew, it is to you, and to the countless numbers of African children that this work is dedicated.

Plant pathogenic fungi are ubiquitous in the environment. 20,000 different species of fungi require a plant host for continuation of their life cycle (Ragsdale et al., 1991). Countless numbers of spores are released by these organisms

Although time is a concept that attracted and occupied the thoughts of a countless number of thinkers and scholars over centuries, its true nature still remains wrapped in a shroud of mystery. Perhaps the main reason why this is so is that there are too many aspects this notion entails. Out

research and outline a more complete theory of romantic attachment. During the past 12 years, attachment theory has become one of the major frameworks for the study of romantic relationships. It has generated hundreds of articles and several books, not to mention countless PhD and MA theses. An in

Rather than being slowly eroded and destroyed, countless numbers of varied forms of life adapt to the diverse aspects of an ever changing environment. However, the amount of variation is maintained at a practical optimum, as too much variation would make the population

The corporation tax is arguably the most well-studied tax found throughout the world. Countless numbers of professionals study the impact of corporate tax law on the affairs of the corporation. Yet, despite considerable resources that are expended on compliance, the tax in many countries raises

spectral resolution enables material identification via spectroscopic analysis, which facilitates countless applications that require identifying materials in scenarios unsuitable for classical spectroscopic analysis. Due to low spatial resolution of HSCs, microscopic material mixing, and multiple