Knowledge Base

Visualize FaceReader Data in The Observer XT

State Expression Values

State Expression values are imported into the observation as a separate event log. When you open the coding scheme, you will see that a behavioral group Dominant Expressions has been added with the six basic expressions, Contempt (optionally), the Neutral state plus Unknown and Not Analyzed as behaviors. Unknown is the expression that is logged when FaceReader cannot find or model the face. See the figure below for a visualization of imported State log values.

Event Markers and Stimuli

Event Markers and Stimuli are imported as separate event logs into the observation. They are added to the Coding Scheme as behavior groups Event Markers and Stimuli. See the figure below for an example of a visualization of imported Event Markers and Stimuli.

Facial States and Global Gaze Direction

If you imported Facial States or Global Gaze Direction in The Observer XT, the new observation contains an extra Event log: Facial States. The behavioral group Facial States has been added to the coding scheme containing the states as State Events with modifiers. For example the State Left eye has the modifiers Open and Closed.

Consumption Behavior Data

If you imported a Detailed log file with Consumption Behavior events in The Observer XT, the new observation contains an extra Event log: Consumption Behavior. The behavioral group Consumption Behavior has been added to the coding scheme containing the states as State Events.

Continuous Data

Continuous data are shown as a continuous graphs when you use FaceReader and The Observer XT 13 or higher versions with N-Linx, or imported the detailed log as external data into The Observer XT. Your license for The Observer XT must include the External Data Module.

Action Unit Intensities as Continuous Data

This option is only available if your FaceReader license includes the Action Unit Module. In addition to this, you chose to export Action Units as continuous values in the Data export tab of the FaceReader Settings window (File > Settings).

You imported the detailed log into The Observer XT as external data. The Action Unit intensities are displayed as continuous graphs.

Action Units as Observational Data

This option is only available if you have the Action Unit Module in FaceReader. If you imported the detailed log as odx file, or used FaceReader and The Observer XT with N-Linx, the Action Units are imported as a separate event log in the observation. The Coding Scheme contains a behavior group Action Units with the modifier group Activation intensity that contains the intensities A to E. See the figure below for an example of a visualization. Click the + sign next to an Action Unit to visualize its intensity values (A, B,...).

Custom Expression Intensities as Continuous Data

This option is only available if your FaceReader license includes the Action Unit Module. You imported the detailed log into The Observer XT as external data (either via the N-Linx protocol or manually). The Custom Expression intensities are displayed as continuous graphs.

Expressions from Voice Intensities as Continuous Data

This option is only available if your FaceReader license includes the Voice Analysis Module. You imported a detailed log file into The Observer XT (either via the N-Linx protocol or manually). The Expressions from voice are displayed as continuous graphs, one for each expression and graphs for Valence from voice, Arousal from voice, Loudness and Speech rate.

Data Selection and Statistical Analysis

You can use the imported data for data selection and statistical analysis. For example to select the time period over which Stimulus 1 was scored and to analyze the facial expressions over this time period. For more information on Data selection and statistical analysis, see The Observer XT Help.

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