Across
- 1. The result measured in the resident-intruder paradigm. It is how long it takes one rat to attack another. (6,7)
- 3. A hormone that is associated with aggression, competitiveness and social status.
- 6. The "switching off" of specific genes. (4, 8)
- 8. This study compared the aggression of TPH2 knockout mice with another group of mice.
- 9. This experiment had four conditions that compared levels of testosterone and their effect on aggression.
- 10. Having a valid reason to do something. In the case of animal research, it means having a valid reason to study animals.
- 12. An experimental test commonly used on rats and mice to test aggression. It involves one mouse/rat being introduced to the cage of another. (8, 7)
- 13. This study compared the effects of chronic release of cholesterol on the hippocampus with a group that had chronic release of cortisol.
- 14. A specific gene that promotes the conversion of tryptophan into serotonin.
- 16. Removing a part of the brain.
- 17. The sending of a signal from the gene to outside of the cell. It is how genes communicate and affect physiology and behaviour. (4, 10)
- 18. A neurotransmitter that is associated with mood and antisocial behaviour.
- 19. Damaging a part of the brain.
Down
- 1. Taking good care of animals and making sure there is no unnecessary harm or suffering. (6, 7)
- 2. An animal that has had a particular gene switched off.
- 4. The brain's ability to change as a result of experience.
- 5. The use of animals to test or illustrate biological processes and phenomena. (6, 5)
- 7. A stress hormone release in times of stress.
- 11. An amino acid that is turned into serotonin.
- 13. When animals are selected to breed with one another to produce offspring with particular characteristics. (9, 8)
- 15. This experiment from 1956 compared one group of rhesus monkeys who had their amygdalae ablated with another group who had a different part of the brain removed.