﻿<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>Millisecond Forums » Millisecond Forums » Inquisit 5  » Data problems when running multiple research participants simultaneously</title><generator>InstantForum 2017-1 Final</generator><description>Millisecond Forums</description><link>https://forums.millisecond.com/</link><webMaster>Millisecond Forums</webMaster><lastBuildDate>Sat, 19 Sep 2026 04:23:39 GMT</lastBuildDate><ttl>20</ttl><item><title>Data problems when running multiple research participants simultaneously</title><link>https://forums.millisecond.com/Topic26773.aspx</link><description>Hello,&lt;br/&gt;We have started to run multiple research participants at one time using the same experiment file on different computers, and have found that the summary data file is full of errors. There is data in the wrong columns and it seems to be unusable. Has anyone run into this issue before, and is there a solution that doesn't involve making a new script file for each participant so they can all be neatly in one summary data file?&lt;br/&gt;&lt;br/&gt;Thank you very much!</description><pubDate>Wed, 10 Apr 2019 11:19:44 GMT</pubDate><dc:creator>inquisituser22</dc:creator></item><item><title>RE: Data problems when running multiple research participants simultaneously</title><link>https://forums.millisecond.com/Topic26775.aspx</link><description>&lt;div data-id="26774" class="if-quote-wrapper" unselectable="on" data-guid="1554920382328"&gt;&lt;a class="quote-para" unselectable="on" style="display: none;" href="#" data-id="26774" title="Move Cursor Below" contenteditable="false"&gt;&lt;span unselectable="on"&gt;+&lt;/span&gt;&lt;/a&gt;&lt;a class="quote-delete" unselectable="on" style="display: none;" href="#" data-id="26774" title="Delete Quote" contenteditable="false"&gt;&lt;span unselectable="on"&gt;x&lt;/span&gt;&lt;/a&gt;&lt;span unselectable="on" class="quote-markup"&gt;[quote]&lt;/span&gt;&lt;div unselectable="on" class="if-quote-header" contenteditable="false"&gt;&lt;div unselectable="on" class="if-quote-toggle-wrapper"&gt;&lt;a class="if-quote-toggle quote-link" href="#" data-id="26774" title=" "&gt;&lt;/a&gt;&lt;/div&gt;&lt;span unselectable="on" class="quote-markup"&gt;[b]&lt;/span&gt;Dave - Wednesday, April 10, 2019&lt;span unselectable="on" class="quote-markup"&gt;[/b]&lt;/span&gt;&lt;/div&gt;&lt;div class="if-quote-message if-quote-message-26774"&gt;&lt;div class="if-quote-message-margin"&gt;&lt;div data-id="26773" class="if-quote-wrapper" unselectable="on" data-guid="1554920382328"&gt;&lt;a class="quote-para" unselectable="on" style="display: none;" href="#" data-id="26773" title="Move Cursor Below" contenteditable="false"&gt;&lt;span unselectable="on"&gt;+&lt;/span&gt;&lt;/a&gt;&lt;a class="quote-delete" unselectable="on" style="display: none;" href="#" data-id="26773" title="Delete Quote" contenteditable="false"&gt;&lt;span unselectable="on"&gt;x&lt;/span&gt;&lt;/a&gt;&lt;span unselectable="on" class="quote-markup"&gt;[quote]&lt;/span&gt;&lt;div unselectable="on" class="if-quote-header" contenteditable="false"&gt;&lt;div unselectable="on" class="if-quote-toggle-wrapper"&gt;&lt;a class="if-quote-toggle quote-link" href="#" data-id="26773" title=" "&gt;&lt;/a&gt;&lt;/div&gt;&lt;span unselectable="on" class="quote-markup"&gt;[b]&lt;/span&gt;inquisituser22 - Wednesday, April 10, 2019&lt;span unselectable="on" class="quote-markup"&gt;[/b]&lt;/span&gt;&lt;/div&gt;&lt;div class="if-quote-message if-quote-message-26773"&gt;&lt;div class="if-quote-message-margin"&gt;Hello,&lt;br/&gt;We have started to run multiple research participants at one time using the same experiment file on different computers, and have found that the summary data file is full of errors. There is data in the wrong columns and it seems to be unusable. Has anyone run into this issue before, and is there a solution that doesn't involve making a new script file for each participant so they can all be neatly in one summary data file?&lt;br/&gt;&lt;br/&gt;Thank you very much!&lt;a class="if-quote-goto quote-link" href="#" data-id="26773"&gt;&lt;span class="goto"&gt;&lt;/span&gt;&lt;/a&gt;&lt;/div&gt;&lt;/div&gt;&lt;span class="quote-markup"&gt;[/quote]&lt;/span&gt;&lt;/div&gt;&lt;br/&gt;You should not try and have data from multiple participants written to the same data or summary data file stored on some network share -- this will inevitably lead to data file corruption. This can and will lead to problems exactly as you described. Instead have each run write a separate &amp;lt;data&amp;gt; and/or &amp;lt;summarydata&amp;gt; file by setting /separatedata = true in the &amp;lt;data&amp;gt; and/or &amp;lt;summarydata&amp;gt; element. You can easily merge those files at a later point: &lt;a href="https://www.millisecond.com/support/docs/v5/html/howto/howtocombinedata.htm"&gt;&lt;a href="https://www.millisecond.com/support/docs/v5/html/howto/howtocombinedata.htm"&gt;https://www.millisecond.com/support/docs/v5/html/howto/howtocombinedata.htm&lt;/a&gt;&lt;/a&gt;&lt;br/&gt;&lt;a class="if-quote-goto quote-link" href="#" data-id="26774"&gt;&lt;span class="goto"&gt;&lt;/span&gt;&lt;/a&gt;&lt;/div&gt;&lt;/div&gt;&lt;span class="quote-markup"&gt;[/quote]&lt;/span&gt;&lt;/div&gt;&lt;br/&gt;Thank you!!</description><pubDate>Wed, 10 Apr 2019 11:19:44 GMT</pubDate><dc:creator>inquisituser22</dc:creator></item><item><title>RE: Data problems when running multiple research participants simultaneously</title><link>https://forums.millisecond.com/Topic26774.aspx</link><description>&lt;div data-id="26773" class="if-quote-wrapper" unselectable="on" data-guid="1554919923328"&gt;&lt;a class="quote-para" unselectable="on" style="display: none;" href="#" data-id="26773" title="Move Cursor Below" contenteditable="false"&gt;&lt;span unselectable="on"&gt;+&lt;/span&gt;&lt;/a&gt;&lt;a class="quote-delete" unselectable="on" style="display: none;" href="#" data-id="26773" title="Delete Quote" contenteditable="false"&gt;&lt;span unselectable="on"&gt;x&lt;/span&gt;&lt;/a&gt;&lt;span unselectable="on" class="quote-markup"&gt;[quote]&lt;/span&gt;&lt;div unselectable="on" class="if-quote-header" contenteditable="false"&gt;&lt;div unselectable="on" class="if-quote-toggle-wrapper"&gt;&lt;a class="if-quote-toggle quote-link" href="#" data-id="26773" title=" "&gt;&lt;/a&gt;&lt;/div&gt;&lt;span unselectable="on" class="quote-markup"&gt;[b]&lt;/span&gt;inquisituser22 - Wednesday, April 10, 2019&lt;span unselectable="on" class="quote-markup"&gt;[/b]&lt;/span&gt;&lt;/div&gt;&lt;div class="if-quote-message if-quote-message-26773"&gt;&lt;div class="if-quote-message-margin"&gt;Hello,&lt;br/&gt;We have started to run multiple research participants at one time using the same experiment file on different computers, and have found that the summary data file is full of errors. There is data in the wrong columns and it seems to be unusable. Has anyone run into this issue before, and is there a solution that doesn't involve making a new script file for each participant so they can all be neatly in one summary data file?&lt;br/&gt;&lt;br/&gt;Thank you very much!&lt;a class="if-quote-goto quote-link" href="#" data-id="26773"&gt;&lt;span class="goto"&gt;&lt;/span&gt;&lt;/a&gt;&lt;/div&gt;&lt;/div&gt;&lt;span class="quote-markup"&gt;[/quote]&lt;/span&gt;&lt;/div&gt;&lt;br/&gt;You should not try and have data from multiple participants written to the same data or summary data file stored on some network share -- this will inevitably lead to data file corruption. This can and will lead to problems exactly as you described. Instead have each run write a separate &amp;lt;data&amp;gt; and/or &amp;lt;summarydata&amp;gt; file by setting /separatedata = true in the &amp;lt;data&amp;gt; and/or &amp;lt;summarydata&amp;gt; element. You can easily merge those files at a later point: &lt;a href="https://www.millisecond.com/support/docs/v5/html/howto/howtocombinedata.htm"&gt;https://www.millisecond.com/support/docs/v5/html/howto/howtocombinedata.htm&lt;/a&gt;&lt;br/&gt;</description><pubDate>Wed, 10 Apr 2019 11:15:35 GMT</pubDate><dc:creator>Dave</dc:creator></item></channel></rss>