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Econ Brief

Cutting-edge research from the UCL Department of Economics

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Author: Daniel Lewis

  • The role of relationships in bank lending: a new approach

    Banking & finance

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    3rd September 2026

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    Daniel Lewis

    Firms and the banks that lend to them have unique relationships. Policy-makers who rely on models that ignore these specific links can underestimate the headwinds faced by certain businesses or fail to spot how financial risks are becoming concentrated in specific parts of the market.

    The role of relationships in bank lending: a new approach
  • Ensuring research reliability: a new tool for detecting weak evidence

    Theory & methods

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    2nd February 2026

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    Daniel Lewis

    Karel Mertens

    Policy-makers need to know that the research evidence on which their decisions are based is reliable. A powerful new testing method can assess the strengths and weaknesses of instruments used to analyse complex webs of cause-and-effect relationships – and thereby deliver better-informed advice.

    Ensuring research reliability: a new tool for detecting weak evidence

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