Figure 1

Outline of experimental task. (A) Each trial in this children’s version of the attention networks test is made up of the following: an intertrial interval jittered between 400 to 1,600 ms (pseudorandomly distributed at 200 ms intervals), followed by the presentation of a cue stimulus, then after a 400 ms fixation period, the target alien spaceship appears and remains on screen till the child responds or 3,000 ms has passed. (B) One of four cue types were presented in each trial. (C) The target alien spaceship was centrally presented and could be flanked by other alien spaceships. (D) Attentional indices are calculated from the difference score between pairs of conditions. RT, response time.