Interpersonal Competence in Young Adulthood and Right Laterality in White Matter
De Pisapia, Nicola
Bornstein, Marc H.
Date of Issue2014
College of Humanities, Arts, and Social Sciences
The right hemisphere of the human brain is known to be involved in processes underlying emotion and social cognition. Clinical neuropsychology investigations and brain lesion studies have linked a number of personality and social disorders to abnormal white matter (WM) integrity in the right hemisphere. Here, we tested the hypothesis that interpersonal competencies are associated with integrity of WM tracts in the right hemisphere of healthy young adults. Thirty-one participants underwent diffusion tensor imaging scanning. Fractional anisotropy was used to quantify water diffusion. After the scanning session, participants completed the Adolescent Interpersonal Competence Questionnaire. Fractional anisotropy was subsequently correlated with Adolescent Interpersonal Competence Questionnaire scores using tract-based spatial statistics. Higher interpersonal competencies are related to higher WM integrity in several major tracts of the right hemisphere, in specific the uncinate fasciculus, the cingulum, the forceps minor, the infero-fronto occipital fasciculus, the inferior longitudinal fasciculus, and the superior longitudinal fasciculus. These results provide the first direct analysis of the neuroanatomical basis of interpersonal competencies and young adult self-reported skills in social contexts.
White matter (WM) integrity
Journal of Cognitive Neuroscience
© 2014 Massachusetts Institute of Technology Press (MIT Press). This paper was published in Journal of Cognitive Neuroscience and is made available as an electronic reprint (preprint) with permission of Massachusetts Institute of Technology Press (MIT Press). The published version is available at: [http://dx.doi.org/10.1162/jocn_a_00534]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.