bug in MLU since Sept 3

[Brian MacWhinney]

Dear Info-CHILDES and ChiBolts Readers,

    Leonid just now discovered a bug in the MLU program that was introduced in September 3 of this year.  The bug excludes sentences with final delimiters beginning with a plus.  Of these, the one most commonly used is the +... mark for trailing off.  This means that any analyses of MLU that you may have computed after September 3 would fail to consider utterances with these final delimiters.  Worse still, it counted the words, but excluded the utterances.  So, these MLU numbers are definitely wrong, if you have any utterances in your corpus that terminate with symbols like +...,  +/. and so on.
    There is now a new version of CLAN on the web that corrects this problem.  So, even if you did not compute any MLUs during this period, if you had downloaded a version of CLAN between September 3 and now, then you definitely need to get a new version.
    Our apologies for any problems this may have caused.

-- Brian MacWhinney

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