The WEF surveys 90 different factors, including hard data such as gross domestic product and softer factors like perceived level of bribery and ethical behavior.

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The researchers, who used a questionnaire designed exclusively for the study, found no significant change across the cycle in how the women perceived their level of commitment to the relationship or, at least initially, in their satisfaction with it.

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The system is modeled after military base security protocols in which a color code signifies the level of precaution and perceived threat, according to two officials involved in developing it.

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On a more personal level, one person might calculate that it would be in their perceived benefit to initiate a divorce, and that this process would be helped further by lying in court.

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And at the macro level, I know it makes sense to shape the delivery of advertising around the perceived needs of customers.

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How she perceived herself and how others perceived her could not have been more askew, and it was affecting her ability to perform at a high level.

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Similarly, when less risk and uncertainty is perceived, price-earnings ratios rise and investors are willing to pay a much larger amount for a given level of earnings.

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