Ambulatory Cognition Tests

We now provide four different cognition tests for integration into questionnaires within our experience sampling platform movisensXS.

If you have a specific test or solution you'd like implemented, please get in touch!





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SART (Sustained Attention to Response Test)

Description:
A single number between 1 and 9 appears on the screen. When a number appears the user must tap on the screen. However, when the number 3 displays the participant shouldn't tap.

Output Parameters:
Omission Errors: The number of times the screen was not tapped when it should have been (excluding when the number 3 was displayed)
Commission Errors: The number of errors where the screen shouldn't have been tapped but was. (The taps occuring on the number 3)
Error Sum: Total number of incorrect actions
Correct Taps: Total number of correct actions




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PVT (Psychomotor Vigilance Task)

Description:
The PVT measures the reaction time of a participant and subsequently evaluates their alertness. This android implementation brings a new objective way to assess and measure alertness in ambulatory settings. Upon a black screen a checkerboard pattern will appear at defined intervals (Inter-Stimulus-Interval ISI). When this pattern appears the user must tap the screen as quickly as possible. After they touch the screen, the pattern alters slightly to display the reaction time in ms for one second. The screen clears and the test starts again from a black display.




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n-Back

Variants:
Neutral N-Back, emotional N-Back, Configurable as 2-Back, 3-Back and 4-Back
Description:
The screen displays two different images one after the other at different postions upon the screen - Letters for Neutral N-Back or Faces for emotional N-Back. The user must decide whether the two images were the same. If the participant thinks that the images were the same, they press the yellow button, when the particpant thinks that they're not the same, then they press the blue button. The users can receive feedback on whether they've answered correctly or not.




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Dual-N-Back

Description:
In this test, letters in a 3 x 3 field of squares display one after the other at different positions, with the corresponding field being simultaneously filled with a color. The user decides whether the current field matches either the position, the letter or both conditions, as n steps before. The respondent selects the appropriate button on the screen.




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Flux

Variants:
Numerical Memory Updating, Spatial Memory Updating
Description:
The Flux test was developed to assess the Working Memory fluctuations of 8 to 10 year old children through either a numerical or spatial task. The test evaluates both the accuracy and the number of responses in a given time window. The tasks are integrated into a child-friendly story centering around a cartoon protagonist called Sascha.

Numerical Memory Updating
The Story: Sascha has pieces of candy in his bag (chocolates, lollipops, etc). He loses some and receives others, and the subject must remember how many of each candy he carries with him by adding or subtracting (adding / subtracting ± 2) until he is asked to name the corresponding number.

Spatial Memory Updating
The Story: Sascha has a radar to follow small figures. He can see their start position in a 4x4 square box and an arrow that indicates the direction that they'll travel. The figures 1 square during the game by 1 box in the direction indicated by the arrow. The subject must remember where the respective started and where it moves until the position of the figure is asked.

Further information on these tests and the Software can be found here: FLUX - Assessing Working Memory in Context




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