As at least 40 per cent of us would self-identify as shy, I suspect my deep interest in this subject will be shared by many fellow sufferers.
Psychologists would say it is a temperament trait, one that can induce feelings of social anxiety ranging from mildly distressing to severely debilitating. I have been relieved to discover, though, that shyness is also accompanied by a range of socially useful and positive character attributes.
Part of my research involved interviewing my mother, Melbourne University psychologist Professor Margot Prior, who has been studying temperament for more than three decades. In her view, all children fit somewhere on a spectrum called "approach-withdrawal", ranging from the most engaged and extroverted kids to the most withdrawn, fearful and anxious kids.
For the shy ones among us, this fear comes from our biology, specifically from the reactivity of our nervous systems.
American psychologist Jerome Kagan has studied the physical symptoms of so-called "timid" and "bold" children and found in the timid ones a neural circuitry that is highly reactive to even mild stress.
In short, those children were shown to sweat more and their hearts beat faster in response to new situations. Some kids grow out of shyness but many of us carry this anxiety into adulthood, when this reactivity commonly manifests as blushing, trembling and hyper-ventilating.
I had two shy parents so it is hardly surprising that I inherited a large dose of shyness. As a child and teenager this shyness often got in the way of my initiating social contact for fear of rejection. As an adult I have grappled with social anxiety and been forced to find strategies to overcome my irrational fears.
One such strategy has been to create professional personas for myself, enabling me to function as an apparent extrovert in the workplace. In the memoir I label this persona "Professional Sian" and analyse how she has managed to perform the roles of environment campaigner, choral conductor, opera singer, broadcaster, arts critic and university lecturer.
I now call myself a "shy extrovert". If I was an introvert, I might be quite happy to remain in the background and avoid social situations. Shy people long for social connections but have to fight through a thicket of fears to make such connections.
Managing anxiety often comes at a cost to the shy person's body. Swinburne University psychologist Dr Simon Knowles has studied the "brain-gut axis" and its role in the fraught relationship between anxiety and the gastro-intestinal system.
Many of Dr Knowles' anxious patients present with IBS (irritable bowel syndrome), an inflammatory bowel disease caused by the interaction between the gut's nervous system and the brain. My own digestive system has reacted to decades of nervous stress by developing a range of food intolerances.
While the symptoms of shyness can be difficult to control, the distress of social anxiety can be compounded by feelings of shame and embarrassment. We shy people often feel like incompetent idiots in social situations.
English sociologist Dr Susie Scott believes this feeling of relative incompetence is central to the experience of shyness. But she blames these feelings on what she calls "the illusion of competence": the mistaken belief that we all have to present ourselves as socially competent all the time.
In her 2007 book Shyness and Society: The Illusion of Competence, Dr Scott argues that shy people are perceived as failing to pull their weight in social situations and that, while non-shyness is seen as normal and acceptable, shyness is seen as deviant and undesirable.
The misperception of shyness as rudeness or aloofness plagues shy people, but in fact we long for social inclusion and connection.
But the news is not all bad. According to Macquarie University psychologist Professor Ron Rapee, shyness usually comes with a range of positive attributes, including greater sensitivity and greater levels of honesty.
When I interviewed Rapee, he told me shy people were often reliable, conscientious, and good listeners who demonstrated high levels of empathy. Many shy people can be found in the caring professions, working in roles that are generally non-self-aggrandising and non-domineering.
The social acceptability of shyness is also somewhat dependent on the culture in which you're living. According to Canadian psychologist Xinyin Chen, while North American parents typically react to their children's shy-inhibited behaviour with disappointment, in group-orientated societies such as China, shy-inhibited behaviour may be encouraged because it is conducive to group organisation.
Back in the 1980s the lead singer of British band The Smiths offered a succinct summary of the situation for shy people. In the song Ask, Morrisey sang:
"Shyness is nice, and
Shyness can stop you
From doing all the things in life
You'd like to".
My autobiographical quest to understand shyness has not "cured" me of this temperament trait, as I had hoped. But it has erased my shame and embarrassment about my social anxiety and reassured me that without shy people the world would be a far less compassionate place.
