Why couples click and clash, explained with research

    Research-based guides on how you love, argue and repair. Each article shows its sources and says how strong the evidence is.
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    Start with a topic

    Four topics, each with its sources and an honest evidence rating.

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    17 guides

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    Learn your own pattern, and see how we compare with other tests.

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    How we compare

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    See how you and your partner fit

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    Find our affinity
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