| Abbreviation | Definition |
|---|---|
| DC | Dream Character |
| DCP | Division of Clinical Psychology |
| DD | Dual Diagnosis |
| DDD | Deep Dark Depression |
| DECAP | Doctorate in Educational Child and Adolescent Psychology |
| DECP | Department of Educational and Counseling Psychology |
| DECP | Department of Educational and Counselling Psychology |
| DECP | Division of Education Child Psychology |
| DECP | Division of Educational and Child Psychology |
| DFL | Delusional Falsehoods and Lies |
| DHSM | Default Heterosexual Sado-Masochism |
| DI | Disagreement Index |
| DICE | Deliberate Interpretative Conscious Experience |
| DID | Dissociative Identity Disorder |
| DILD | Dream Induced Lucid Dream |
| DIMH | Deviation from Ideal Mental Health |
| DIR | Developmental Intensive Relationship |
| DISSUB | DIgit Symbol SUBstitution test |
| DLAM | Don't Laugh At Me |
| DMEP | Decision Making and Economic Psychology |