This paper compares the levels of technical efficiency reached by bus transport companies during the period 1989-1996, taking into account the deregulation context in which they operate. The empirical evidence reveals that there are no substantial changes in the use of inputs after the bus...

Purpose – The purpose of this paper is to examine the supernatural punishment theory . The theory postulates that religion increases cooperation because religious people fear the retributions that may follow if they do not follow the rules and norms provided by the religion....