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  1. Senior Member
    Student or Learner
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    were omitted or have omitted


    I am having trobule with the underlined part, is that grammatically correct?
    have the emprical models omitted the R&D investment?

    McWilliams and Siegel (2000) argue that empirical models employed in prior research were misspecified and omitted research and development (R&D) investment which they argue is an important determinant of CSR.

  2. Moderator
    Retired English Teacher
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    Re: were omitted or have omitted

    Yes and yes.

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