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Contributors:
  1. Jawel Mersali

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Description: The ability to follow nonverbal social cues is impaired in several disorders. Our aim was to collect normative data for the first psychometric test (TooN) that assesses this skill in children. The normative sample consisted of 339 typically developing children aged 6 to 10. TooN is a computerized tool that includes 120 trials in which children must press a button as soon as possible when an object appears on the right or left side of the screen. Each object is preceded by a video of a model gazing and/or pointing to the side where the object appears (i.e. congruent condition) or the opposite side (i.e. incongruent condition). Linear regression analyses were conducted for reaction times (RTs) and for gaze and pointing cuing effects (i.e. the difference between RTs in incongruent and congruent conditions). Regression analyses showed that age, sex and parental education significantly predicted RTs. Age and sex, but not parental education, were significant predictors of gaze cuing effects. However, age was the only significant predictor of pointing cuing effects. Based on these analyses, we provided the equations to calculate the z-scores for RTs and cuing effects. Accuracy scores, stratified by age and/or sex, are reported as percentiles. Based on the performances of typically developing children, we present the normative data of a new psychometric tool designed to assess nonverbal social cue-following. This tool can be valuable for evaluating children with neurodevelopmental disorders. To support this claim, its validity should be tested across various clinical populations.

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