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Quality of Survey Timings

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3 years 6 months ago #98924 by sterlingbates
I use Limesurvey already for a number of surveys and want to extend it's use.

I am interested in doing surveys using the Harvard Implicit Association style testing.
implicit.harvard.edu/implicit/

This requires split second accuracy on timing.

Does anyone know how the "save timings" is implemented?

Specifically, is it client-side or server-side, ie. is it sensitive to lag and transit time from a client to server?
Or measured client side so the recorded time is not sensitive to lag?

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3 years 6 months ago #98925 by sterlingbates
In case you want more about what "Implicit" measurement is about...
implicit.harvard.edu/implicit/Demo/background/index.jsp

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3 years 6 months ago - 3 years 4 months ago #98945 by tpartner
My solution for IATs has been to use array-text questions with JavaScript to present the terms and record the results. As this is all client-side, there is no noticeable lag.

Here's a screenshot of the concept (the results array would, of course, be hidden in a live survey):


Cheers,
Tony Partner

Solutions, code and workarounds presented in these forums are given without any warranty, implied or otherwise.
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Last Edit: 3 years 4 months ago by tpartner.
The following user(s) said Thank You: sterlingbates

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3 years 5 months ago #99695 by sterlingbates
Anyone else have a solution to using Limesurvey for IAT style testing?

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3 years 5 months ago #99953 by sterlingbates
Anyone have experience implementing IAT style surveys on Limesurvey?

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3 years 5 months ago #99979 by DenisChenu
Not sure if i understand or if i answer to question but ;) :

Did you try manual.limesurvey.org/LimeSurvey_Glossary#Timings ?

Think timing is set in PHP, but not sure.
(have a js timing, but validate in PHP)

Assistance on LimeSurvey forum and LimeSurvey core development are on my free time.
I'm not a LimeSurvey GmbH member, professional service on demand (or search sondages pro).
The following user(s) said Thank You: sterlingbates

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3 years 5 months ago #99989 by sterlingbates
Thanks, I am not sure that information is detailed enough.

In the case of timings measured at the 100th to 1000th of a second, then knowing when the timing starts and when it stops is critical.

Case 1: php timing. Timing starts from when the server sends the page, and then stops when the response is received by the server. This does NOT work for IAT style assessments

Case 2: js timing. Timing starts from when the page is displayed to the user and stops from the moment the person clicks the answer.

While for most survey situations, the difference between Case 1 and 2 is negligible. However, for IAT style testing, the differences are significant.

Does anyone know which timing Limesurvey uses?

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3 years 4 months ago - 3 years 2 months ago #100013 by tpartner
I have added a workaround for an Implicit Association Test (IAT) - manual.limesurvey.org/Workarounds:_Manip...ation_Test_.28IAT.29

Cheers,
Tony Partner

Solutions, code and workarounds presented in these forums are given without any warranty, implied or otherwise.
Last Edit: 3 years 2 months ago by tpartner.
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3 years 4 months ago #100229 by sterlingbates
WOW!

Thank you very much for making that work!

That is way more than I was hoping for and a great example of what makes the limesurvey community great.

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3 years 2 months ago - 3 years 2 months ago #102292 by sterlingbates
Tony, that link seems to go nowhere, can you put that somewhere I can access it?

Nevermind, found a way to get to it:
manual.limesurvey.org/Workarounds:_Manip...ation_Test_.28IAT.29
Last Edit: 3 years 2 months ago by sterlingbates.

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