Knowledge Base

Stimuli and the Stimulus Presentation Tool

Main Topics

• Define Stimuli
• Score Stimuli
• The Stimulus Presentation Tool
• Carry Out a Test with the Stimulus Presentation Tool
• Define a Test
• Specify Connection Settings for the Stimulus Presentation Tool
• Run a Test
• Computer Settings for a Two Computer Setup with Stimulus Presentation Tool
• Create Exceptions in Windows Firewall for Stimulus Presentation Tool
• Synchronize Computers with a Network Time Protocol

Define Stimuli

Aim

To define the Stimuli to show to test participants and, to score them manually, the associated key codes.

Prerequisites

• Your FaceReader license includes the Project Analysis Module.
• You have Stimuli with a fixed duration, for example video fragments.

Procedure

1. Choose Project > Stimulus > Add Stimulus or click the Add Stimulus button on the bottom-left pane.
2. In the window that opens, enter the Stimulus name, for instance, 'Commercial 1'.
3. Under Trigger Key, enter a keyboard key for this Stimulus. If you score the Stimuli manually, press this key when the Stimulus (commercial 1 in this example) starts.
4. Under Color, optionally change the color for the Stimulus and click OK. This color will be used throughout the program for this Stimulus.
5. Select to present either a video, or an image as Stimulus, or no external Stimulus.

If Your Stimulus Is a Video

1. Select the video, for instance, the video with the six commercials which your test participants will watch.
2. Enter the Start Time in video (in hours:minutes:seconds with two decimals). In our example this is the start time of Commercial 1. If this commercial starts half a minute after the start of the video, enter 00:00:30.00. Leave 00:00:00.00 if the video starts with this Stimulus.
3. Enter the Duration (in hours:minutes:seconds.milliseconds). In our example this is the duration of Commercial 1.

If the entire video file is a Stimulus, do not edit Duration.

If Your Stimulus Is an Image

1. Select the image, for example a screen capture of a web page, or a wrapping of a chocolate bar.
2. Enter the Duration (in hours:minutes:stimulusseconds.milliseconds).

If Your Stimulus Is Not a Video or Image

To score an event manually, for example a Stimulus by an external program other than the Stimulus Presentation Tool, or a phase in a test:

1. Select No Media.
2. Enter the Duration (in hours:minutes.seconds.milliseconds).

Note

To delete or edit a Stimulus, open the Stimuli tab at the bottom of the Project Explorer. Right-click the Stimulus you want to delete or edit, and select the option you require.

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