Facial expression

An ability to 'read' and interpret the facial expressions of your partner will improve your chances of successful flirting, as will awareness of what you are signalling with your own expressions.

Some expressions can be effective even from a distance, as in the 'across a crowded room' encounter with a stranger. The 'eyebrow-flash', for example, which involves raising the eyebrows very briefly �?for about one-sixth of a second �?is used almost universally as a long-distance greeting signal. When you see someone you know, but are not near enough to speak, the eyebrow-flash shows that you have noticed and recognised them.

We all use this non-verbal "Hello!" in situations where we cannot use the verbal equivalent, either because of distance or social convention. Watch a video of Andrew and Fergie's wedding, for example, and you will see that Fergie performs frequent eyebrow-flashes as she walks down the aisle. Social etiquette does not allow a bride to call out cheery greetings to her friends and relations during the ceremony, but the highly sociable Fergie is clearly unable to refrain from signalling the same greetings with her eyebrows.

If you are desperate to attract the attention of an attractive stranger across a crowded party, you could try an eyebrow-flash. This should make your target think that you must be a friend or acquaintance, even though he or she does not recognise you. When you approach, your target may thus already be wondering who you are. You can, if you are skilful, use this confusion to initiate a lively discussion about where you might have met before. Such conversations inevitably centre on possible shared interests or friends or habits, and invariably involve mutual disclosure of at least some personal information. As you will learn from the 'Verbal flirting' sections of this Guide, these are essential ingredients of successful flirting. So, assuming your target finds you attractive, an eyebrow-flash with appropriate follow-up could leapfrog you into instant intimacy.

Two warnings are necessary here: 1) If your target does not find you attractive, the eyebrow-flash strategy may backfire, as the confusion over whether or not you already know each other will be experienced as unpleasant and annoying, rather than amusing. 2) Do not use the eyebrow-flash in Japan, where it has definite sexual connotations and is therefore never used as a greeting signal.

If your target is attracted to you, this may be more evident in facial expressions than in words. Studies have found that women are generally better than men at reading these expressions, but that both sexes have equal difficulty in seeing through people's expressions when they are controlling their faces to hide their real feelings.

The problem is that although faces do express genuine feelings, any facial expression that occurs naturally can also be produced artificially for a social purpose. Smiles and frowns, to take the most obvious examples, can be spontaneous expressions of happiness or anger, but they can also be manufactured as deliberate signals, such as frowning to indicate doubt or displeasure, smiling to signal approval or agreement, etc. Feelings can also be hidden under a 'social' smile, a 'stiff upper lip' or a blank, 'inscrutable' expression.

Despite this potential for 'deceit', we rely more on facial expressions than on any other aspect of body language. In conversation, we watch our companions' faces rather than their hands or feet, and rely on their facial signals to tell us what effect we are having, and how to interpret what they say. Although people are better at controlling their facial expressions than other aspects of body language, there is still some 'leakage', and the following clues will help you to detect insincerity.

Let's say your target smiles at you. How do you know whether this smile is spontaneous or manufactured? There are four ways of telling the difference. First, spontaneous smiles produce characteristic wrinkles around the eyes, which will not appear if your target is 'forcing' a smile out of politeness. Second, 'forced' or 'social' smiles tend to be asymmetrical (stronger on the left side of the face in right-handed people and on the right side of the face in left-handed people).The third clue to insincerity is in the timing of the smile: unspontaneous smiles tend to occur at socially inappropriate moments in the conversation (e.g. a few seconds after you have made a funny remark, rather than immediately). Finally, there is a clue in the duration of the smile, as a manufactured smile tends to be held for longer (what is often called a 'fixed' smile) and then to fade in an irregular way.

When observing your target's facial expressions, it is important to remember that although an expressive face �?showing amusement, surprise, agreement etc. at the appropriate moments �?may indicate that your target returns your interest, people do naturally differ in their degree and style of emotional expression. Women naturally tend to smile more than men, for example, and to show emotions more clearly in their facial expressions.

You are also likely to interpret expressions differently depending on who is making them. Experiments have shown that people may read the same expression as 'fear' when they see it on a female face, but as 'anger' when it appears on male face. There are also cultural and even regional differences in the amount of emotion people express with their faces. Oriental people are more likely than Westerners to hide their emotions under a 'blank' expression or a smile, for example, and American researchers have found that in the US, Notherners smile less than people from the South.

If an attractive stranger smiles at you, it could be that he or she finds you attractive, but he or she could also be an outgoing, sociable person from a culture or region in which smiling is commonplace and not particularly meaningful.

These factors must also be taken into account when considering the effect of your own facial expressions. People tend to be put off by levels of expressiveness that are considerably higher or lower than what they are used to, so it could help to try to 'match' the amount of emotion you express with your face to that of your target.

As a general rule, however, your face should be constantly informative during a flirtatious conversation. Unexpressiveness �?a blank, unchanging face �?will be interpreted as lack of interest when you are listening and an absence of facial emphasis when you are speaking will be disturbing and off-putting. You need to show interest and comprehension when listening, and to promote interest and comprehension when speaking, through facial signals such as eyebrows raised to display surprise, as a question mark or for emphasis; the corners of the mouth turning up in amusement; nodding to indicate agreement; frowning in puzzlement; smiling to show approval, or to indicate that what you are saying should not be taken too seriously, and so on.

Fortunately, most of these facial signals are habitual, and do not have to be consciously manufactured, but some awareness of your facial expressions can help you to monitor their effect and make minor adjustments to put your target more at ease, for example, or hold his or her attention, or increase the level of intimacy.

Finally, remember that your target is unlikely to be scrutinising you for tiny signs of insincerity, so a 'social' smile will be infinitely more attractive than no smile at all