Managing large-scale transportation infrastructure projects is difficult due to frequent misinformation about the costs which results in large cost overruns that often threaten the overall project viability. This paper investigates the explanations for cost overruns that are given in the...

Research on 'happiness' suggests that once an average per capitaincome of around US$10,000 is achieved in acountry, further increases in income will not lead to a significantincrease in happiness. Additional income willprobably often be spent on the satisfaction of mainly 'relative'needs, of...