Description

In this task, also commonly known as Matrix Reasoning, children are presented with a visual geometric design in a 3x3 or 4x4 format with a missing piece. Children then select one of four choices to fill in the missing piece and complete the pattern.

The matrix stimuli used here are the MARS-IB items from Chierchia et al. (2019).

Note that this task can be tricky for children, especially younger children, to understand. As currently implemented, the task will replay the instructions if the child gets the first two problems wrong.

Demo

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Try Pattern Matching in English

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Try Pattern Matching in German

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Try Pattern Matching in Spanish

Notes

Adapted from the open-access MaRs-IB item set (Chierchia et al., 2019)
Simple, relatively language-independent pattern recognition task
Ability to shorten/make adaptive
Good test-retest reliability (i.e., Kuwait; A bdel-Khalek, 2005) and external validity (Downey et al., 2014; Green et al., 2017; Pind et al., 2003)

Task Modifiers / Parameters

Audio Feedback	Determines whether audio cues are provided during the task to indicate correct or incorrect responses.
Language	Specifies the language used for instructions and stimuli in the task.
Skip Instructions	Whether the participant can skip instructions or needs to wait for the audio to finish.
Sequential Practice	Determines if practice trials are presented in a fixed order rather than randomized.
Sequential Stimulus	Specifies whether the main task stimuli are presented in a sequential order or randomized.
Corpus	Refers to the set of stimuli or word list used in the task. (Currently not allowing outside corpuses)
Button Layout	Defines the arrangement of response buttons on the screen. Options include default (4 x 1), grid (2 x 2), column (1 x 4), and diamond ◇. Default is default.
Number of Trials	Specifies the total number of trials in the main task.
Number of Practice Trials	Indicates the number of practice trials before the main task begins.
Max Incorrect	Sets the maximum number of incorrect responses allowed before the task terminates.
Key Helpers	Determines whether visual cues for keyboard shortcuts are displayed near response options.
Age	Represents the age of the participant, which may affect task difficulty or stimulus selection. (Currently not in use)
Max Time	Specifies the maximum duration of the task. If the participant does not finish within this time frame, the task is terminated. Default is 100, in minutes.