TY - JOUR PY - 2015// TI - Neuroanatomical correlates of the income-achievement gap JO - Psychological science A1 - Mackey, Allyson P. A1 - Finn, Amy S. A1 - Leonard, Julia A. A1 - Jacoby-Senghor, Drew S. A1 - West, Martin R. A1 - Gabrieli, Christopher F. O. A1 - Gabrieli, John D. E. SP - 925 EP - 933 VL - 26 IS - 6 N2 - In the United States, the difference in academic achievement between higher- and lower-income students (i.e., the income-achievement gap) is substantial and growing. In the research reported here, we investigated neuroanatomical correlates of this gap in adolescents (N = 58) in whom academic achievement was measured by statewide standardized testing. Cortical gray-matter volume was significantly greater in students from higher-income backgrounds (n = 35) than in students from lower-income backgrounds (n = 23), but cortical white-matter volume and total cortical surface area did not differ significantly between groups. Cortical thickness in all lobes of the brain was greater in students from higher-income than lower-income backgrounds. Greater cortical thickness, particularly in temporal and occipital lobes, was associated with better test performance. These results represent the first evidence that cortical thickness in higher- and lower-income students differs across broad swaths of the brain and that cortical thickness is related to scores on academic-achievement tests.
Language: en
LA - en SN - 0956-7976 UR - http://dx.doi.org/10.1177/0956797615572233 ID - ref1 ER -