Psychology Crossword Puzzle

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Across
  1. 2. Vivid disturbing dreams during REM Sleep
  2. 5. Determining Dream's Meaning
  3. 6. A theory suggesting humans dream to learn to defend themselves
  4. 8. Symbols appearing in dreams
  5. 9. Hidden Level of Content in a Dream
  6. 12. Control/Realization of Dreams
Down
  1. 1. Surface Level of Content in a Dream
  2. 3. REM
  3. 4. 3 Non-Rem and Rem
  4. 7. Electrical and chemical signals for transmitting information, thoughts etc
  5. 10. a sleep disorder characterized by episodes of extreme fear
  6. 11. Pertaing to Biology or living organisms