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...

Einzeltitelempfehlungen von Banken oder Fachzeitschriften treffen in den vergangenen Jahren bei der Investorenschaft immer häufiger auf Misstrauen. Zunehmende Aufmerksamkeit wird hingegen indexbasierten aktiven Portfoliomanagement-Strategien gewidmet. Trotzdem werden nur selten Prognosen zur...

Traditionally economic theory assumes that preferences are stable facilitating positive predictions of economic policy. While there is conflicting experimental evidence on the temporal stability of cooperation preferences in public goods provision, surprisingly little is known about their...