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Market Reviews
2011
Hard-wired to herd
"I hope Charlie's article below will help your trading. Self awareness and ways to
control emotion are critical to long term trading
success. This article points out why emotion comes into the mix. Pre-planning and
target-setting are ways to help you take out or reduce emotion. If you feel you
need more ideas to help you with boosting the analytical side of trading email john.mcglade@marketspreads.ie
and we'd be delighted to help."
John McGlade,
Sales & Marketing Director, MarketSpreads.
The investment world is one of the few arenas in human life that has the capacity
to make smart people look dumb. Indeed, some of the finest minds through history
have been humbled by the financial markets including the prominent scientist, Sir
Isaac Newton in the 'South Sea Bubble' of 1720, the celebrated author, Mark Twain
in the silver fever of 1863, not to mention the Nobel laureates, Myron Scholes and
Robert Merton, following the collapse of their ill-fated hedge fund, Long-Term Capital
Management, in 1998.
Even some of the most adulated business luminaries in Ireland came unstuck as the
property bubble imploded and levelled both their financial and reputational capital.
How could an entire nation be seduced to participate in such a dangerous and ultimately
damaging love-affair with bricks-and-mortar? The new field of neuroeconomics – a
blend of neuroscience, psychology and economics – provides important clues.
The brain is the most important organ in the human body and is designed to interpret
information and direct activity towards rewards and away from danger. It accounts
for roughly two per cent of the body weight of a typical adult human, yet, despite
its relatively small size, the brain consumes about one-fifth of the oxygen and,
hence, calories in the human body.
It should come as no surprise therefore, that analytical thinking in the conscious
mind burns up neural resources. As a result, the brain has evolved to conserve energy
and thus, resorts to intuitive reasoning or 'gut feel' when making decisions. Almost
all human decision-making takes place unconsciously and analytical reasoning is
employed only when absolutely necessary.
The fact that the brain economises, means that most decisions are made before the
conscious mind is even aware. Indeed, the subconscious mind processes half a million
times more information per second than the conscious mind. Emotions, the subjective
feelings that serve as traffic lights for the brain and elicit rapid stereotyped
behavioural responses, are thus, the brain's default mechanism when humans make
decisions.
The intuitive processing system is the product of millions of years of evolution
such that human emotions and decision-making skills have remained essentially unchanged
for centuries. Indeed, Daniel Goleman, author of the best-selling book, 'Emotional
Intelligence', writes that, “The slow, deliberate forces of evolution that have
shaped our emotions have done their work over the course of a million years; the
last 10,000 years...have left little imprint on our templates for emotional life.”
The glacial pace at which evolutionary change takes place means that intuitive reasoning
is likely to be better equipped to solve the problems that faced hunter-gatherers
in the African savannah 200,000 years ago rather than the complex challenges of
the modern information age. This is particularly true of the investment world where
problems are complex, while information is incomplete, ambiguous and constantly
changing. Under such circumstances, the intuitive system typically overrules even
deliberately formed intentions, leading to sub-optimal decision-making. Individual
decision-making is subject to cues inherited from the ancestral environment but,
one of the most dangerous for the modern investor is undoubtedly the desire to be
part of the crowd. Herding, which in a biological sense is the tendency for some
species to seek safety in numbers, is easy to understand from an evolutionary perspective.
Being part of a group and taking cues from others reduced the risk of falling prey
to a predator on the Serengeti for example, whilst simultaneously increasing the
odds of a successful hunt for meat. Furthermore, monitoring the actions of others
provided vital information not only for survival, but also for the assessment of
mating potential and hence, reproduction.
However, though herding proved beneficial to our ancestors, the same behaviour typically
proves detrimental in the investment world. The human instinct to imitate others
can lead to the mispricing of assets, as individual investors base their decisions
on expert opinion and slavishly make investments simply because the experts say
the uptrend will persist.
Herding can result in a dangerous asset bubble as more and more investors jump on
the bandwagon. However, the collective behaviour of the stampeding crowd causes
a decline in population diversity, such that even a small decline in demand can
have an outsized negative impact on market prices. The inevitable result is a destabilising
crash.
It is clear that the herding phenomenon was an important factor behind the Irish
property bubble and subsequent bust. A dangerous drop in population diversity occurred
in Ireland as expert opinion from the financial institutions to the regulator –
and even political parties – argued that price increases were supported by fundamentals,
and ruled out the possibility of a hard landing.
The instinctive desire to herd was given impetus by such expert opinion, which served
to dull individuals' normal sensitivity to risk or danger. Individual investors'
reward-seeking system, which releases dopamine – the brain's 'pleasure' chemical
– was thus, placed in overdrive with an attendant increase in risk.
The dangers were under-appreciated and, since, simply matching expectations produces
no dopamine kick, more and more risks were taken in the pursuit of ever greater
rewards. In effect, an entire nation began to resemble a cocaine addict that requires
an ever larger 'fix' to increase dopamine levels and create an equivalent high.
The collapse of the Irish property market is obvious in hindsight, but it is important
to note that social exclusion generates activity in the same part of the brain as
physical pain. Individuals participated in the property bubble simply because it
would have hurt not to do so.
The lessons from neuroeconomics are clear. Optimal financial decision-making requires self-awareness and emotional management. Indeed, Socrates, the Greek philosopher, declared, “Know thyself.” Financial spread traders and investors take note.


