What are the 29 Dimensions of Compatablity? You have heard the commercials but no one ever tells us what the 29 Dimensions of compatibility are. We are not psychologists nor smart enough to develop the algorithms needed to match similar people. However the components can be broken down into basic subsets.

The eHarmony technology is focused specifically on enhancing the online dating experience. One such technology is eHarmony’s patented scientific matching system called Compatibility Matching System. This system uses “29 dimensions” of each customer’s personality to find his/her match.

These dimensions are split into two categories: core traits (such as temperament and style) which “are defining aspects of who you are that remain largely unchanged” and vital attributes (such as values, beliefs, and experiences) that “are based on learning and experience, and are more likely to change”.

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The system requires customers to answer 436 questions and matches them with others based on their responses. This software is valuable and rare and therefore differentiates eHarmony from its other competitors, helping it to maintain its competitive advantage.