The European Community Regulation on Chemicals (REACH) is supposed to be a modern and intelligent regulation. It entered into effect on June 1, 2007 and remains in its implementation phase. The modern and intelligent aspects primarily lie in the way in which self-responsible action on the part...

The paper analyses on an experimental basis the phenomenon of non-optimal under-diversification in portfolio choice decisions and investigates the reasons behind it. The most important obstacles for optimal diversification are studied the correlation neglect hypothesis and the overconfidence...