Theory of mind and executive function during middle childhood across cultures

Theory of mind (ToM) development is critical to effective social functioning and appears to depend on complementary language abilities. The current study explored the mediating influence of language on the development of cognitive and affective ToM. 151 children aged between 5-12 years completed ToM (cognitive and affective) and language assessments, and parents provided ratings of their child’s empathic ability. Results showed that language mediated the relationship between age and both cognitive and affective ToM, but not parent-reported cognitive empathy. Examination of younger and older subgroups revealed that language mediated cognitive and affective ToM differently across developmental periods. Findings highlight the dynamic role that language plays in the development of both cognitive and affective ToM throughout early and middle childhood.

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Impact of Repetitive Transcranial Magnetic Stimulation (rTMS) on Theory of Mind and Executive Function in Major Depressive Disorder and Its Correlation with Brain-Derived Neurotrophic Factor (BDNF): A Randomized, Double-Blind, Sham-Controlled Trial

Brain Sciences ◽

10.3390/brainsci11060765 ◽

2021 ◽

Vol 11 (6) ◽

pp. 765

Author(s):

Jie Tong ◽

Jie Zhang ◽

Ying Jin ◽

Weiqing Liu ◽

Hao Wang ◽

...

Keyword(s):

Major Depressive Disorder ◽

Executive Function ◽

Transcranial Magnetic Stimulation ◽

Theory Of Mind ◽

Depressive Disorder ◽

Magnetic Stimulation ◽

Repetitive Transcranial Magnetic Stimulation ◽

Major Depressive ◽

Double Blind ◽

Perseverative Errors

Background: Studies have implicated hypofrontality in the pathogenesis of impaired theory of mind (ToM) and executive function (EF) in major depressive disorder (MDD). These symptoms are usually resistant to treatment. Repetitive transcranial magnetic stimulation (rTMS) has been shown to reverse hypofrontality. Moreover, BDNF is an effective biomarker of antidepressant effects, but there have been very few studies on the correlation between BDNF and rTMS. We aimed to evaluate the efficacy of 20 sessions of a 10 Hz unilateral rTMS intervention over the left dorsolateral prefrontal cortex (DLPFC) in improving ToM and EF in patients with MDD and its correlation with BDNF. Methods: A total of 120 MDD patients were enrolled in this randomized, sham-controlled, double-blind trial. Each participant received 20 sessions of rTMS at 10 Hz frequency through the active or the sham coil over 4 weeks. ToM was assessed with the facial emotion identification test (FEIT) and hinting task (HT). EF was assessed with the Wisconsin card sorting test (WCST). BDNF assessments were carried out at baseline and 2-, 4-, 12-, and 24-week follow-ups. Results: The improvement in the ToM (FEIT, HT) in the active rTMS group was significantly different from that in the sham rTMS group (F = 18.09, p < 0.001; F = 5.02, p = 0.026). There were significant differences in the WCST (categories completed, response errors, response perseverative errors, non-response perseverative errors) after logarithmic transformation at different time points in the active rTMS group (F = 14.71, p < 0.001; F = 5.99, p = 0.046; F = 8.90, p = 0.031; F = 2.31, p = 0.048). However, there was no significant difference in log transformed BDNF concentration between the two groups (t = 0.07 to t = 1.29, p > 0.05). BDNF was negatively correlated with WCST categories completed at the 24th week (r = −0.258, p = 0.046). Conclusions: The results show that rTMS may improve the ToM and EF of patients with MDD and there was no significant correlation with serum BDNF concentration. RTMS can not only be used for treatment of patients with MDD but also has a positive effect on ToM and EF.

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Social competence, theory of mind, and executive function in institution-reared Turkish children

International Journal of Behavioral Development ◽

10.1177/0165025414556095 ◽

2014 ◽

Vol 39 (6) ◽

pp. 519-529 ◽

Cited By ~ 13

Author(s):

Evren Etel ◽

Bilge Yagmurlu

Keyword(s):

Executive Function ◽

Theory Of Mind ◽

Social Competence ◽

Mental State ◽

Cultural Context ◽

Receptive Language ◽

Scaling Analysis ◽

Turkish Children ◽

The Social ◽

Behavioral Assessments

This study had two aims. The first aim was to measure mental state understanding in institution-reared children by using a theory of mind (ToM) scale, and to examine the role of cultural context in sequencing of ToM acquisition. The other aim was to investigate ToM in relation to social competence and executive function (EF). Due to its pronounced role in mental state understanding and social interactions, we assessed receptive language as well. The participants were 107 institution-reared children aged 3 to 5 years in Turkey. Two visits were held within 2 days for behavioral assessments. In the first visit, the ToM scale was administered; in the second visit, the child was given the language test and the EF tasks. The social competence scales were completed by the child’s primary care provider in the institution. Guttman scaling analysis revealed that an understanding of diverse beliefs developed earlier than knowledge access, favoring the “individualistic pattern.” The regression analysis showed that EF was a significant predictor of ToM, but neither of them was associated with social competence when age was controlled. Receptive language predicted social competence and EF directly, and ToM indirectly through EF, pointing to the importance of this ability for early development.

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