Segal Dorit, Shalev Lilach, Mashal Nira
School of Education, Hebrew University of Jerusalem.
School of Education, Tel Aviv University.
Neuropsychology. 2017 Sep;31(6):636-647. doi: 10.1037/neu0000370. Epub 2017 Mar 30.
To characterize the hemispheric processing of metaphors in adults with ADHD compared to controls.
We investigated the hemispheric processing of metaphors in 24 adult participants diagnosed with ADHD and 24 control participants. The hemispheric processing was examined using a divided visual field paradigm, in which different kinds of metaphors as well as literal word pairs and unrelated word pairs were presented either to the right visual field/left hemisphere (RVF/LH) or to the left visual field/right hemisphere (LVF/RH).
Control participants processed metaphors more efficiently when presented in the LVF/RH than when presented in the RVF/LH, whereas participants with ADHD demonstrated attenuated asymmetry of hemispheric processing. Furthermore, asymmetry of hemispheric processing, together with sustained attention, contributed significantly to the prediction of self-report of ADHD symptoms.
Our results suggest that the hemispheric processing of adults with ADHD is less lateralized than the hemispheric processing of control participants. Moreover, the diminished lateralization of metaphor processing along with deficient sustained attention may reflect distinct cognitive mechanisms underlying ADHD and as such our results support multiple pathway models of ADHD. (PsycINFO Database Record
与对照组相比，描述患有注意力缺陷多动障碍（ADHD）的成年人对隐喻的半球加工情况。
我们调查了24名被诊断患有ADHD的成年参与者和24名对照参与者对隐喻的半球加工情况。使用分离视野范式检查半球加工，在该范式中，不同类型的隐喻以及字面词对和不相关词对被呈现给右视野/左半球（RVF/LH）或左视野/右半球（LVF/RH）。
与呈现给RVF/LH时相比，对照参与者在LVF/RH呈现隐喻时加工效率更高，而患有ADHD的参与者表现出半球加工不对称性减弱。此外，半球加工的不对称性与持续注意力一起，对ADHD症状的自我报告预测有显著贡献。
我们的结果表明，患有ADHD的成年人的半球加工比对照参与者的半球加工更少地偏向一侧。此外，隐喻加工的偏侧化减弱以及持续注意力不足可能反映了ADHD潜在的不同认知机制，因此我们的结果支持ADHD的多途径模型。（PsycINFO数据库记录）
