SAN FRANCISCO (CBS/AP) — A new study says major technology companies are far more likely to hire Asians as computer programmers than to promote them to become managers or executives.

The analysis released Wednesday uncovered a glaring imbalance between the number of Asian technology workers in non-management jobs and the number in leadership positions in Silicon Valley.

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Ascend, a group focused on Asian business issues, based its findings on 2013 employment data from five Silicon Valley companies: Google, Yahoo, Intel, Hewlett-Packard and LinkedIn.

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The companies didn’t directly respond to Ascend’s report, but say they are trying to diversify.

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Ascend’s findings may raise more questions about ethnic and gender biases in Silicon Valley at a time when the technology industry is already under attack for its hiring practices.

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