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