Knowledge Base

Project Analysis Module

Project Analysis Module

Setup

The general procedure to set up an experiment with FaceReader also applies to the Project Analysis Module. The Project Analysis Module contains the following extra options: 1. Independent Variables - The independent variables Age and Gender are present by default. Choose Project > Independent Variable > Add Independent Variable to add more independent variables, like whether the participants saw the commercial before, or their native language. Double-click Independent Variables under a participant name to score them. Age and Gender can be estimated by FaceReader, or entered manually. 2. Stimuli and Event Markers - Define stimuli or event markers (Project menu) to mark episodes of interest. Stimuli have a fixed duration and can be linked to a video or image to show to the test participants. Project Analysis Module

Stimulus Presentation Tool

Use the stimulus presentation tool to automatically show the stimuli to the test participants and synchronize them with the analyses. important In a two computer setup, synchronize the computer clock times with a time server. See Synchronize computers with a network time protocol in the FaceReader Help how to do so.

On the computer with FaceReader

1. Choose File > Settings > Data Export and under External Communication (API and Stimulus Presentation Tool) select the checkbox Enable External Control.
2. To add tests, open the Tests tab in the bottom pane of the Project Explorer. Then click on the Add test button.
3. Select the camera and the stimuli to show to the test participants. Optionally, choose to let participants enter their own name, age and gender, randomize the presented stimuli, set the stimulus display size and the length of the pause between the stimuli. Project Analysis Module

On the test participant computer

1. Start the Stimulus Presentation Tool and follow the instructions to connect with the FaceReader computer.
2. Select a test and click Start.
3. Fill in the participant details and click Start again, or let the participant do this. The test and analysis start. Project Analysis Module

Analyze

Participants are automatically added when you use the stimulus presentation tool. Also, analyses are automatically carried out. Watch the Model quality bar when the test runs. The bar should cross the dashed line. If this is not the case, improve lighting or reposition your camera. Optionally, score event markers during the analysis.

Output

Apart from the general FaceReader output options (page 14), the Project Analysis Module has the following output: Quick Layouts - This will open a number of charts to give you a first impression of the data. Pie chart, Box plot, Bar chart, Circumplex model or Line chart - Circumplex Model and Line Chart are only available if you scored stimuli in your project. Project Analysis Module Table - To calculate statistics on the analyzed facial expressions and other parameters of all participants, participant groups or single participants. Stimulus - To add your stimulus videos to the visualization. You can play back your stimulus videos together (synchronized) with a Line chart with the facial expressions and other parameters. Participant - To add your participant face video to the visualization. You can play back your participant videos together (synchronized) with the stimulus video and a Line chart with the facial expressions and other parameters. Project Analysis Module Compare - To compare two or more data sets in a chart or table and carry out a t-test to test for significant differences. You can select what data to include in the analysis: Select what parameters to visualize/tabulate. Select a stimulus or event marker to visualize/tabulate the data during this stimulus/ event marker. Select whether you want to visualize/tabulate absolute or relative values of your parameters. Project Analysis Module Select how to aggregate data over time. Select how to aggregate data over test participants. Select which test participants to include in your analysis. Project Analysis Module

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Source: FaceReader 9 Quick Start Guide