Fig. 3. Glx and behavioral flexibility.

Glx in the dACC is positively related to scores on trait Control-reversed, r = +0.41, unadjusted p = .04, R² = 0.17. The finding did not survive correction using the Holm-Bonferroni sequential method (Holm adjusted p = .258), and thus is considered preliminary. The finding provides evidence of a medium sized relationship between dACC Glx and behavioral flexibility in healthy adults. Glx = Glx complex, corrected for partial volume effects.dACC = dorsal anterior cingulate; voxel size was 15 × 15 × 10 mm (10 mm in SI direction; see Methods for details). Personality was evaluated using the Multidimensional Personality Questionnaire Brief Form (MPQ-BF).gray shading is 95% confidence interval. N = 20 participants with ¹ H MRS data meeting quality control criteria; see Methods section for details.