Why The Most Important Idea In Behavioral Decision-Making Is A Fallacy This thread is a followup to a bullpen post:
https://mutualfundobserver.com/discuss/discussion/40777/is-loss-aversion-a-mythThat post links to a column that in turn cites the paper that the Scientific American piece linked here is summarizing. How's that for circular references :-)
That column argues that loss aversion is still real, though it suggests a refinement to the concept.
My question is: if investors do not weigh losses more heavily than gains (i.e. are averse to losses), then why do so many people here keep looking at Sortino ratios and maximum draw
downs? Why don't we have maximum gain data as well?
That's not a joke. I'm as concerned when a fund I have performs way out of line with my expectations on the upside as when it underperforms.
I owned a legacy fund that had originally been an income oriented sector fund that evolved into a respectable broad based large cap value fund. I had been considering selling it for a variety of reasons. What finally made me pull the trigger was one year when it wound up as the top performing LCV fund (can't verify, but M* says it was in the top
1%).
The fund was so volatile that even with top quartile returns for the past 3, 5, and
10 years, it had a
1* rating. Yet the last straw for me was the
upside risk.
So, why all these biased metrics? Junk statistics, or do investors really care more about their risk of loss then their risk of gain?
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Why The Most Important Idea In Behavioral Decision-Making Is A Fallacy Conclusion: “In sum, our critical review of loss aversion highlights that, even in contemporary times, wrong ideas can persist for a long time despite contrary evidence, and therefore, that there is a need to critically assess accepted beliefs and to be wary of institutional consensus in science and otherwise. While loss aversion has frequently been cited to explain why people are biased toward the status quo, perhaps fittingly, the case of loss aversion illustrates the importance of challenging science’s status quo.”
Sounds like somebody trying to impress their college prof.
I don’t know. If everyone were more concerned about possible loss than possible gain, you’d think that ...
- Sports betting would cease
- Casinos would close / State lotteries would go bust
- Motorists would typically drive 10 mph under posted limits
- Manias and bubbles in assets (like stocks and real estate) would never exist