The symmetry-induced numerosity illusion depends on visual attention

<p>For the ST, ST-WD:&nbsp;each file contains a matrix called &ldquo;a&rdquo;. Each row of the matrix &ldquo;a&rdquo; is a trial.&nbsp;</p> <p>The columns contain the following information:</p> <ul> <li>1st: Numerosity of test stimulus</li> <li>2nd: Log10 of numerosity of test stimulus divided by the standard numerosity</li> <li>3rd: Participant response (0 = standard stimulus; 1 = test stimulus)</li> <li>4th: 200</li> <li>5th: Standard numerosity &nbsp; &nbsp; &nbsp;</li> <li>6th: Dots size in pixels</li> <li>7th: 10</li> <li>8th: Condition (0= symmetry condition; 1= random condition)</li> <li>9th: Standard-Test order (1 = standard first; 2 = standard second)</li> <li>10th: Response time</li> <li>11th: -99</li> <li>12th: -99</li> <li>13th: -99</li> <li>14th: 0</li> </ul> <p>For the DT:&nbsp;each file contains a matrix called &ldquo;a&rdquo;. Each row of the matrix &ldquo;a&rdquo; is a trial.&nbsp;</p> <p>The columns contain the following information:</p> <ul> <li>1st: Numerosity of test stimulus</li> <li>2nd: Log10 of numerosity of test stimulus divided by the standard numerosity</li> <li>3rd: Participant response (0 = standard stimulus; 1 = test stimulus)</li> <li>4th: 200</li> <li>5th: Standard numerosity &nbsp; &nbsp; &nbsp;</li> <li>6th: Dots size in pixels</li> <li>7th: 10</li> <li>8th: Condition (0= symmetry condition; 1= random condition)</li> <li>9th: Standard-Test order (1 = standard first; 2 = standard second)</li> <li>10th: Response time to the numerosity task</li> <li>11th: Response to the color-conjunction task (1: target; 0: no-target)</li> <li>12th: code of color-conjuction stimulus presented onscreen</li> <li>13th: Accuracy to the color-conjuction task (1:correct; 0:wrong)</li> <li>14th: 1</li> </ul>