Table 2.
Descriptive statistics.
| Mean ± SD | CRLB | |
|---|---|---|
| Metabolites | ||
| tNAA | 8.32 ± 0.78 | 3.30 ± 0.80 |
| Glx | 13.13 ± 1.42 | 4.75 ± 1.89 |
| Cho | 1.83 ± 0.18 | 3.10 ± 0.79 |
| tCr | 6.42 ± 0.43 | 2.60 ± 0.60 |
| Ins | 4.84 ± 0.52 | 4.40 ± 1.90 |
| Trait Measures | ||
| Flexibility | ||
| Absorption | 6.5 ± 3.0 | |
| Control-reversed | −8.7 ± 3.0 | |
| Agency | ||
| Social Potency | 6.9 ± 3.3 | |
| Aggression | 1.6 ± 1.1 | |
| Discriminant Validity | ||
| Social Closeness | 9.1 ± 2.9 | |
| Stress Reaction | 4.4 ± 4.1 | |
| Alienation | 1.3 ± 2.0 |
Top rows are descriptive statistics for CSF-corrected metabolite levels in instsitutional units (i.u.). N = 20; see Methods for data quality and exclusions. Leftmost column indicates mean ± standard deviation for CSF-corrected metabolite concentrations in the dACC voxel. Rightmost column indicates mean and standard deviations for CRLB = Cramer-Rao lower bound for each metabolite. tNAA = total N -acetyl-aspartate and N-acetylaspartyl-glutamic acid. Glx = Glx complex. Cho = choline-containing compounds. tCr = total creatine and phosphocreatine. Ins = myo-inositol. Lower rows are d escriptive statistics for self-reports of trait emotion on the Multidimensional Personality Questionnaire Brief Form (MPQ-BF). Measures of Flexibility: Absorption, a measure of the flexibility of emotional engagement. Control-reversed, a measure of the flexibility and spontaneity of behavior. Measures of Agency: Social Potency, a measure of positively valenced agentic emotion. Aggression, a measure of negatively valenced agentic emotion. Measures included for Discriminant Validity: Social Closeness, a measure of affiliative extraversion which is distinct from Social Potency. Stress Reaction, a measure of ruminative distress, which is distinct from Aggression. Alienation, a measure of internal feelings of interpersonal alienation, also distinct from Aggression. N = 20 healthy young adults, see Methods for details.