Knowledge Base

Observe In The Observer XT And Analyze In FaceReader

Procedure

1. Check the following:

   That your camera is connected to the PC, that it is turned on, and selected as default camera in FaceReader.

   That FaceReader is open and the upper right corner shows the text N-Linx-connected.

   That you selected the data to export in FaceReader.

   Important Select only the data you really need. Data files can become very large when you select many export options. This slows down data import into The Observer XT.

2. Let the test participant take place at the test computer and check that the FaceReader webcam has a proper view of the face.

   See Camera and accessories in Installation

3. Create a new observation in The Observer XT. A new participant is created in FaceReader with a camera analysis.
4. Start the observation in The Observer XT. Dependent on the settings in The Observer XT, the Independent Variables list appears. This list contains the independent variables you created in The Observer XT together with the FaceReader independent variables Age, Gender and ParticipantID. When you enter the values of the user defined independent variables, the observation and FaceReader analysis start.

   See Independent Variables how FaceReader independent variables are imported into The Observer XT.

5. Score data in The Observer XT. FaceReader automatically analyzes the camera images and creates a video file.
6. Stop the observation.

   Classification in FaceReader is automatically stopped. The FaceReader data and videos are automatically imported into the observation. The Expression states are imported as behaviors and the values of the detailed log are imported as external data.

Notes

• If your license for The Observer XT does not include the External Data Module, you must set up The Observer XT to start and stop FaceReader analysis together with an observation.

  See Add a Custom External Device in The Observer XT Help for the procedure.

  Important Importing FaceReader data adds FaceReader elements to the coding scheme. However, these elements cannot be scored manually in a new observation in The Observer XT.

• When you enter a name in the Identify device as field in step 10 of Set up The Observer XT to work with FaceReader, this name is added as a subject to the Coding Scheme. When you now manually score events, The Observer XT expects that for each event you first score a subject and then a behavior. Define a subject in the Coding Scheme. Then choose Setup > Project Settings > Scoring Options and select Auto-record subject. You now have to score the subject only once at the start of the test.

Source: FaceReader 10 Reference Manual (Help), Noldus Information Technology