The Influence Mechanism Of Color On Attention Bias Of ADHD Children

This study consisted of two substudies,involving children with attention deficit hyperactivity disorder(ADHD)and normal children.The first study consists of two experiments.The cue paradigm is adopted to explore the characteristics of attention preference of ADHD children and normal children to color stimuli by changing the types and properties of color stimuli.Study ii consists of two experiments.The cue paradigm and task detection paradigm are used to study the influence mechanism of color on the target attention bias and coding of ADHD children and normal children by changing the color of interference stimuli.The results of experiment 1 indicate that:1)attention orientation level of ADHD children is lower than attention orientation level of normal children;2)in the attention bias,there is no obvious difference in the color effect magnitude of red,yellow and blue colors between the two group;3)red has the best color effect quantity and the greatest influence on attention bias,followed by yellow and blue.The results of experiment 2 manifest that:1)the attention-biased effect amount of the ADHD group was overt lower than that of the normal group;2)the attention-biased effect amount of the high attribute stimulus was distinct higher than the attention-biased effect amount of the low attribute stimulus;3)the color effect amount of the normal group under the condition of high attribute was larger than that under the condition of low attribute,while the color effect amount of the ADHD group under the condition of high attribute was not significantly different.The results of experiment 3 indicate that:1)when color stimulus and black stimulus are presented at the same time,for ADHD children,color stimulus has interference effect on attention bias of black target stimulus,and has promoting effect on normal children.2)for ADHD subjects,the color interference effect was mainly limited to red,while yellow and blue did not produce significant interference effect.3)for normal subjects,the promotion effect of color mainly lies in red and yellow,while blue does not produce significant promotion.The results of experiment 4 manifest that:1)the amount of interference effect in the ADHD group was outstanding higher than that in the normal group;2)red had the largest amount of interference effect on the subjects,followed by yellow and finally blue.To sum up,the conclusions of this study are as follows:1)ADHD children tend to pay less attention to stimuli than normal children;2)in the attention bias,red has the largest color effect,followed by yellow,and blue is the worst.3)high attribute stimulus is more likely to attract attention bias than low attribute stimulus.4)color stimulation has a disturbing effect on ADHD children's attention to target stimuli,which continues to the later stage of visual coding.