Each time the Quester ITB is shown is called an ITB instance. Multiple open-ended questions can be asked in one ITB instance. The ITB can be used multiple times during an interview which results in multiple ITB instances. When multiple ITB instances are used the first ITB always uses the Quester provided projectId and any additional ITB instances use respondentId returned in the response XML from the first ITB instance.
For example if there is an interview outlined like the following:
The ITB was designed to detect when respondents are being unresponsive and / or typing garbage or useless text. When the ITB detects this type of behavior the ITB will warn the respondent and if the respondent continues the ITB will terminate the respondent’s session and send a status code 2.2 back to the partner in the response XML. This feature can be turned off and can also be adjusted to allow a certain number of warnings. The Quester contact can provide further details and help determine if this feature is appropriate for a given study.