Differences

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--- en:create:waves [29.10.2017 20:13] – [Diary Studies] claudia.seifert
+++ en:create:waves [27.05.2024 07:34] (current) – admin
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 ====== Multi-Wave Survey ======
 If you want to survey one and the same respondent over different periods of time, you are usually dealing with a multi-wave survey, a longitudinal study or a diary study which all three face two challenges:
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 When using multiple questionnaires for every completed questionnaire a new dataset (data row) is stored. For matching reasons every data row needs a distinct participant code. By doing the following one can get such a code:
-  * If you send mailings, SoSci Survey automatically stores a distinct personal identification under the variable SERIAL (additional variable in the data output). This is possible also without losing any anonymity. Important: The email must contain the placeholder %link% in order to actually send personalized links.
+  * If you send mailings, SoSci Survey automatically stores a distinct personal identification under the variable SERIAL (additional variable in the data output). This is possible also without losing any anonymity.
-  * You can send personalized links on your own. The identification of every participant then will be passed by a reference or a serial number (see also [[en:survey:url|URL to the Questionnaire]]). A reference will be stored under the variable REF, a serial number will be stored in the variable SERIAL (this one also allows for continuing the questionnaire).
+    * **Important:** The email must contain the placeholder %link% in order to actually send personalized links.
+    * **Important:** All questionnaires must be created within the same survey project. The personal IDs are specific for each project.
+  * You can send personalized links yourself. The identification of every participant then will be passed by a reference or an access code (see also [[en:survey:url]]). A reference will be stored under the variable REF, an access code will be stored in the variable SERIAL (this one also allows for continuing the questionnaire).
   * The participants are asked to create a personal code and enter this to a text gadget (for example with the first letter of their mother's name, the last digit of their birth year and so on). Because of its susceptibility to errors we do not recommend this option. If you want to use such an option it is important to ask the single components of the code in distinct, single text gadgets.
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 Sending an invitation at a previously defined point of time can be obtained directly via the user interface:
-  * At //Invitation Mailings --> Mailings// a new serial email is created.
+  * At //Invitation Mailings --> Mailings// a new mailing is created.
   * If the invitation to the first wave was already done via mailings, this one shall be chosen at the tab reminder/follow-up mail (type of follow-up mail: "New wave") - following this instructions, one can send the new invitation directly to those participants who already participated in the first wave.
   * With the button "Prepare Sending" subsequently the sending will be prepared. You can there choose a date and time at which the invitation shall be sent.
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   * SoSci Survey supports the sending of SMS via the Mailings-function. In case the SMS-function is unlocked, you can leave the text- or html-version of an invitation empty and instead enter some text for an SMS.
   * In case you enter email-text as well as SMS-text, SoSci Survey sends messages via both channels (if both have a valid address or phone-number).
-  * The address list takes email-addresses as well as phone-numbers (instead or additionally).
+  * The **List of Contacts** takes email-addresses as well as phone-numbers (instead or additionally).
   * The Opt-In-question takes email addresses as well as mobile-phone-numbers. For a validation of a number an additional email address is necessary.
   * Important: providers of mobile phone network charge a fee for sending SMS (per SMS costs incur by 0.10 Euros (plus sales taxes).
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   * Questionnaires that were created using SoSci Survey can usually be completed via smartphone, but for a MESM-study it is worth the effort to optimize the questionnaire for smartphones, among others with an optimized layout.
+==== Event-contingent measurement points ====
+The counterpart to experience sampling is that respondents call up a questionnaire independently when a specific event occurs. Ideally, they do not have to enter a personal code each time, but can use a personalized link directly. There are several ways to do this:
+  * You can use mailings ([[:en:survey:mailing]]) to send personalized links that allow multiple completion of a questionnaire. To do this, set the option "Multiple completion with the personalized link allowed" in the //questionnaire link// tab for the //multiple participation// setting in the mail merge.
+  * You can also create links yourself that carry a marker and send them to respondents: [[:en:survey:url#mark_a_link_r|Mark a link]]. Note that in that case the pseudonym will appear in both the invitation and the dataset.
+----
+**Search terms:** panel, panel studies, experience sampling, ambulatory assessment.