In an explanation that is commonly dubbed the "mere exposure effect" or the "familiarity principle, " the more we're exposed to something or someone, the more pleasing and likable it tends to become.
It did not take exceptional levels of exposure to produce an effect - abnormalities were found in women exposed to levels below those found in a quarter of US women.
None of the research groups that have worked on developing these models has felt that it was important to include the much weaker effect of exposure to ETS, even though a number of them have assessed this association.
That small, hazy picture shows a ghostly climber (the effect of the long exposure required) slogging up a snow field on the Wetterhorn.
To isolate the effect of the pesticide exposure on ADHD symptoms, the researchers controlled for a variety of health and demographic factors that could have skewed the results.
There are rumours that Greek banks have also been keen sellers of credit-default swaps on sovereign Greek debt, in effect doubling up on their exposure to a debt crisis.
But exposure to global markets has the necessary winnowing effect.
In contrast, exposure to radiation from standard masts showed no significant effect.
BBC: The location of mobile phone masts has caused controversy
He said it was difficult to estimate the true effect because cancer may develop only years after exposure to air pollution.
Its most serious known effect is liver cancer about 10-15 years after exposure, so it is not exactly a shock anti-personnel weapon.
If phones really do cause cancer, but only at high exposure, employing such a generous definition of regular use means that the effect might be diluted into undetectability.
Exposure to the oil for a prolonged period of time can result in a toxic effect on the skin, and mammals can suffer lung damage or death after breathing it in, Bossart said.
This followed the exposure last year of the covert system of referral fees, under which insurers, in effect, stoke up claims against themselves and thus drive up premiums.
The latest investigation comes after the exposure last year of the covert system of referral fees, under which insurers, in effect, stoke up claims against themselves and thus drive up premiums.
BBC: Car insurance market referred to Competition Commission
The text messages had referred to the bank's losses through exposure to American International Group (AIG), the global insurance giant that was in effect taken over by the American government on September 16th, and Lehman Brothers, the Wall Street bank that collapsed a day earlier.
However, if exposure to silicone is just one of a number of risk factors for contracting a disease, the effect may be too small to detect without looking at enormous numbers of women.
In addition to the bank's European exposure, analysts say that the U.S. Senate money-laundering investigation was also having an effect, and that investors were selling ahead of the company's earnings report.
In the legacy report, non-commercial traders added exposure on both sides of silver, adding 133 gross longs and 657 gross shorts, which had the effect of lowering their net-long to 22, 825 contracts.
FORBES: FOCUS: Speculators Cut Bullish Gold, Silver Positions -- CFTC Data
The researchers said although a causal effect could not be proven, the way they had done the study strongly suggested that it was exposure to alcohol in the womb that was responsible for the differences in child IQ.
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