Paul's main interests lie in how socio-economic variables affect the human life experience and the 'unanswerable' economic mysteries in life.
His research projects include: Happiness projects (death, satisfaction, expectations, health satisfaction, job satisfaction, income); Labour market projects (labour supply, discrimination, search efficiency, entrepreneurs, education) and Development projects (social capital, relational capital, creative destruction, economic development, rural-urban migration in China and Indonesia).
Paul has also written on diverse and popular science projects such as cultural convergence, Pandora’s Box, the Golden Age of Humanity and God’s Phone Number.