If there’s one thing you can bet on in horseracing, it’s
this: so-called successful bettors will always think that their little black
books hold superior "inside" knowledge that makes them experts.
However, in the long run, the majority of horseracing
punters will lose money at the track – and there will always be more losers
Serious punters will often keep track of how well they are
doing, in the fond hope of identifying a "winning system". So says Matthew
Browne of CQ University in Australia, whose research group found that the number of wins required to show that one is doing better than chance, is
extremely high. The results are published in Springer’s Journal of Gambling Studies.
Gamblers who participate in skill-oriented games such as poker
and sports betting are motivated to win over the long-term, and some monitor
their betting outcomes to evaluate their performance and proficiency.To investigate what levels of sustained returns would really
be required to establish evidence of skill or expertise, Browne’s team modelled
a random strategy to simulate so-called "naïve" play, in which equal bets were
placed on randomly selected horses using a representative sample of 211 weekend
The results showed surprising volatility, even after a large
number of repeated bets. After adjusting for the house advantage, a gambler
would have to place over 10 000 bets in individual races with net returns
exceeding 9% to be reasonably considered an expert bettor.
This means that for the vast majority of players, their
historic records or data provide surprisingly little information regarding
their chances of making a positive return in the future.
human evolution influences gamblers’ decisions
Browne says that even sophisticated and rational gamblers,
assuming they have achieved moderately good returns over an extended period,
are simply unable to recognise that their historical performance most likely
occurred simply due to chance.
Browne explained, “Imagine you had bet on 1000 separate
races, choosing horses carefully according to their merits, and were 'up' by
20%. It would be easy to conclude you had a winning system, or above-average
skills. But counter to every intuition, you were probably just lucky.”
He ascribes such
false beliefs among horseracing bettors to the combination of cognitive biases,
and the strong volatility intrinsic to returns on race betting, labelling it a "delusion of expertise".
The findings have important implications for problem
gambling, as delusions of expertise are likely to be most prevalent in skill-oriented
games and in serious, otherwise rational, performance-tracking gamblers. Browne
and his team say that the development of such fallacies and biases are shared
between race handicapping and other nominally expert pursuits such as chartist
exchange-rate speculation and professional poker.
“In any game where returns are highly volatile, and there is
a reasonable expectation that skill plays a role, delusions of expertise may
come into play,” comments Browne, who adds, “In horse betting in particular, it
appears that a gambler may easily be misled into believing that an effective
winning strategy had been identified, when in fact it was due to chance alone.”
It seems that it is intrinsically difficult for people to
objectively evaluate their own performance under these conditions. Browne
concludes, “Unfortunately, it appears that historical performance at the track
is often either ambiguous, or positively misleading, for gamblers considering
their own returns.”
Read more on gambling:
• From compulsive gambling to gambling addiction
near-wins motivate gamblers
Browne, M. et al (2013). Delusions of Expertise: The High
Standard of Proof Needed to Demonstrate Skills at Horserace Handicapping,
Journal of Gambling Studies.
(Picture: Horse-racing from Shutterstock)