Bullied preadolescents show larger cortical volumes in left entorhinal, left superior parietal, and right fusiform regions than matched non-bullied peers¶

Claim · All claims
Evidence · 1 study (2 entries) · associational r2 · q3 · i1 small
Currency · newest study 2023 · not yet checked against its sources · not reviewed by a person · recheck by 2028: baselines and conditions change

Subclaims¶

q3 i1 Bullied children had larger cortical volumes in the left entorhinal (d = 0.39), left superior parietal (d = 0.51), and right fusiform (d = 0.60) regions than non-bullied children. → Menken Miriam S. 2023 q3 i? None of these three larger-volume regions affected cognition scores, and no bullying-by-visit interaction was found for left entorhinal volume. → Menken Miriam S. 2023 (2)

Evidence¶

Menken Miriam S. 2023¶

Menken Miriam S., Rodriguez Rivera Pedro J., Isaiah Amal, Ernst Thomas, Cloak Christine C., Chang Linda. (2023). Longitudinal alterations in brain morphometry mediated the effects of bullying victimization on cognitive development in preadolescents. Developmental Cognitive Neuroscience. https://doi.org/10.1016/j.dcn.2023.101247

q3 · i1 · associational · r2

LMM analysis of Desikan-Killiany parcellated cortical volumes in the matched ABCD sample across two visits. The article reports larger volumes in the three named regions in bullied children, with the printed effect sizes including "d=0.39" for the left entorhinal region.

"bullied children had larger cortical volumes in the left entorhinal (d=0.39, P = 0.013), left superior parietal (d=0.51, P = 0.023), and right fusiform regions (d=0.60, P = 0.014) than children in the non-bullied group"

Menken Miriam S. 2023 (2)¶

Menken Miriam S., Rodriguez Rivera Pedro J., Isaiah Amal, Ernst Thomas, Cloak Christine C., Chang Linda. (2023). Longitudinal alterations in brain morphometry mediated the effects of bullying victimization on cognitive development in preadolescents. Developmental Cognitive Neuroscience. https://doi.org/10.1016/j.dcn.2023.101247

q3 · i? · associational · r2

Mediation/association analyses of the three bullying-impacted cortical volume regions against cognitive scores. The article reports no effect on cognition (P range 0.09–0.81); the left entorhinal bullying-by-visit interaction was also not significant (P = 1.00).

"none of the three regions (left entorhinal, left superior parietal, right fusiform) that were larger in bullied children compared to non-bullied children affected cognition scores (P-value range: 0.09–0.81)"

Discussion¶

Related Claims¶

• Bullied preadolescents have larger right hippocampal volumes than matched non-bullied peers, but this does not mediate cognition
• Bullied preadolescents score lower than matched non-bullied peers on reading, processing speed, and inhibitory control/attention over two years
• Sex moderates bullying-related cognitive and brain differences, with effects in boys and girls appearing in different regions and tasks
• Bullied preadolescents show thinner cortices in left-hemisphere temporal, precentral, and right rostral middle frontal regions, and precentral thinning mediates 7% of the bullying effect on inhibitory control/attention
• Larger right fusiform surface area in bullied children partially suppresses the negative effect of bullying on crystallized composite and vocabulary scores
• Bullied girls show lower episodic memory and crystallized composite cognitive scores than non-bullied girls
• Caregiver-reported bullying victimization is associated with higher odds of NSSI/passive suicidality and active suicidality in preadolescent children — related