Across
- 3. A common cultural heritage.
- 6. Carries outgoing messages.
- 7. Frightening dreams that occur during REM sleep.
- 9. Difficulty in falling asleep or remaining asleep throughout the night.
- 11. Receptor cells responsible for colored vision.
- 13. Electrically charged particles found in and out of the neuron.
- 14. Biological readiness to learn certain associations because of their survival advantages.
- 16. Center of the visual field.
- 17. The colored part of the eye.
- 20. The Psychological and social meanings attached to being biologically male or female.
Down
- 1. Tangible goods, values, attitudes, behaviors, and beliefs that are passed down.
- 2. Sub-population of a species that is defined according to an identifiable characteristic.
- 4. Smallest unit of the nervous system.
- 5. A reliable relationship between two events.
- 8. Chemically inactive substance.
- 10. Learning that occurs rapidly as a result of understanding all the elements of a problem.
- 12. Vivid visual and auditory experiences that occur during REM sleep.
- 15. Reinforcing successive approximations to a desired behavior.
- 18. Receptor cells responsible for night vision.
- 19. Groups of axons bundled together
