| SMG | Sad Music Group |
| HMG | Happy Music Group |
| MLQ | Meaning in Life Questionnaire |
| PHQ | Patient Health Questionnaire |
| GGM | Gaussian Graphical Model |
| EBIC | Extended Bayesian Information Criterion |
| CI | Confidence Interval |
| CS-coefficient | Correlation Stability Coefficient |
| BH | Benjamini–Hochberg |