<div dir="ltr"><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130">Dear Matt,</div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130"><br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130">The Pano language family might have candidate examples of this. Some languages are iambic, others trochaic and others mix properties (or are 'incoherent') of iambic and trochaic patterning. If you can read Spanish Carolina Gonzalez wrote an <a href="https://sedyl.cnrs.fr/amerindia/articles/pdf/A_39_05.pdf">overview</a>, but otherwise, just check out the citations. Some Pano languages seem to have no clear evidence for a metrical system - as far as I have been able to discern, despite some early preliminary <a href="https://sedyl.cnrs.fr/amerindia/articles/pdf/A_39_04.pdf">(mis)analysis</a>, you <a href="https://pubmed.ncbi.nlm.nih.gov/32359331/">don't need</a> to analyze Chacobo as metrical. Once you incorporate independently necessary tone sandhi rules + intonation, it seems that the motivation for a metrical analysis disappears (or as suggested by one of our reviewers, the metrical structure is there but displays no empirical signal, which may or may not have been a joke).  <br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130"><br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130">As for the direction of change, I don't know. We haven't been very successful in reconstructing much of anything about Pano prosody to my knowledge. 
If Chacobo represents the older system, the extant iambic/trochaic might have come from something else. 

</div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130"><br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130">On the other hand, I wonder if it is always so obvious that there is one determinate analysis of a system as being one or the other (iambic or trochaic) given</div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130"><br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130"> A. the possibility of throwing in extrametricality (wsws could be <w>sws or wsw<s>...)  <br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130"><br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130">B. the fact that the phonological patterns that the metrical system fits out are an open ended set with no necessary or sufficient conditions, <br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130"><br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130">C. and the general lack of clarity regarding the <i>phonetic signal</i> of the metrical structure (despite some interesting <a href="https://www.journal-labphon.org/articles/10.5334/labphon.42/">studies</a>, it remains totally unclear what types of results would actually falsify the so-called iambic-trochaic law because of a failure of. Also note that there appear to be few cases where claims about the presence of <a href="https://www.degruyter.com/document/doi/10.1515/lingvan-2017-0007/html">secondary stress</a> have actually been corroborated with phonetic studies suggesting that at least some number of patterns might have been hallucinated by the author).</div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130"><br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130">p.s. @Hiroto - wouldn't Iroquian languages be a possible example? </div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130"><br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130">best,<br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130"><br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130">Adam<br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130"><br></div><div class="gmail_default" style="font-family:monospace,monospace;color:#4c1130"> <br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Aug 17, 2021 at 9:08 PM Matthew Windsor <<a href="mailto:matthew_windsor@sil.org">matthew_windsor@sil.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">



















<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif">Dear all,<span></span></p>

<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif">Is anyone aware of a language where metrical/rhythmic structure
has clearly shifted from having right-headed (iambic) feet to left-headed
(trochaic) feet or vice versa? I’m studying a language variety where this seems
to be the case. It’s a quantity-sensitive system, so the change mainly affects
strings of light syllables. Any examples or suggested resources would be
helpful, thanks!<span></span></p>

<p class="MsoNormal" style="margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:"Calibri",sans-serif">Regards,<span></span></p>





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<p><font size="4"><b><span style="font-family:"Garamond",serif;color:black">Matt Windsor</span></b></font></p>

<p><span style="font-size:8pt;font-family:"MS Reference Sans Serif",sans-serif;color:black">Linguistics & Translation Facilitator | SIL </span><span><span><span><span><span><span style="font-size:8pt;font-family:"MS Reference Sans Serif",sans-serif;color:black">Americas, North</span></span></span></span></span></span><span style="font-size:12pt"></span></p>

<p><span><span><span><span><span><span style="font-size:8pt;font-family:"MS Reference Sans Serif",sans-serif;color:black">Cell: 1-807-631-6656</span></span></span></span></span></span><span style="font-size:12pt"></span></p>

<p><span style="font-size:8pt;font-family:"MS Reference Sans Serif",sans-serif;color:black"></span><span style="font-size:12pt"></span></p>

<p style="margin-top:12pt"><span style="font-family:"BJCree UNI";color:rgb(118,113,113)">ᐅᐦᐅᐁᐧ</span><span style="font-family:"BJCree UNI";color:rgb(118,113,113)"> </span><span style="font-family:"BJCree UNI";color:rgb(118,113,113)">ᐃᐦᑭᑐᐃᐧᐣ</span><span style="font-family:"BJCree UNI";color:rgb(118,113,113)"> </span><span style="font-family:"BJCree UNI";color:rgb(118,113,113)">ᑮᐄᐧᔮᐦᓯᐃᐧ</span><span style="font-family:"BJCree UNI";color:rgb(118,113,113)"> </span><span style="font-family:"BJCree UNI";color:rgb(118,113,113)">ᒦᓇ</span><span style="font-family:"BJCree UNI";color:rgb(118,113,113)"> </span><span style="font-family:"BJCree UNI";color:rgb(118,113,113)">ᑭᑮᐱᐄᐧᒋᐊᔮᒥᑯᓈᐣ</span><span style="font-family:"BJCree UNI";color:rgb(118,113,113)">.</span><span></span></p>

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</blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><font face="times new roman, serif">Adam J.R. Tallman</font></div><div dir="ltr"><font face="times new roman, serif">Post-doctoral Researcher <br></font></div><div dir="ltr"><font face="times new roman, serif">Friedrich Schiller Universität<br></font></div><div><font face="times new roman, serif">Department of English Studies<br></font></div></div></div></div></div></div></div></div>