We first provide evidence of some retail investors taking real trading (selling) decisions which are clearly sub-optimal even from an ex-ante perspective. We then show that these investors also exhibit stronger investment biases, namely, the disposition effect, underdiversification, preference...

This paper reports the results of a behavioural finance experiment on the ability of Thai individuals to make informed investment decisions under a defined contribution self-management option. Using an asset allocation dataset from members of the Thai Government Pension Fund (TGPF) and a control...

We ask how pension fund trustees deal with the booms and busts that funds encounter, and to what extent the decisions of pension fund trustees are affected by behavioral biases. We examine these issues by using a vignette-method field experiment among Dutch pension fund trustees. We find that...

By comparing the trading behavior of individual investors in different market conditions, this paper tests the theory that attribution bias - inflated confidence in one's own skill - creates overconfident traders. In a bull market, investors incorrectly attribute trading successes (luck) to...

We experimentally test overconfidence in investment decisions by offering participants the possibility to substitute their own for alternative investment choices. Overall, 149 subjects participated in two experiments, one with just one risky asset, the other with two risky assets. Overconfidence...

It is well established that international portfolios are far substantially under-diversified, contrary to predictions of traditional finance theory. Even after controlling for market segmentation and “investability” of foreign markets, portfolio under-diversification remains a puzzle. I...

We show theoretically that the weak transmission of beliefs to actions induces a strong bias in basic asset pricing tests. In particular, expected returns can appear to decline in risk when investors weakly transmit their payoff expectations into willingness to pay. We experimentally test this...