1. A scientist improves the design of an experiment so that it gives more significant results. Which of the 3Rs does this count as?

2. Routine sterilisation of all materials entering an animal house helps prevent the entry of disease-causing micro-organisms. What does this count as?

3. A neuro-scientist finds that she can use rats instead of non-human primates for a project. What does this count as?

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Reduction
Replacement
Refinement
Reduction
Replacement
Refinement
Reduction
Replacement
Refinement

Yes, Reduction. Well done

Yes, refinement.         Well done

Yes, refinement.         Well done

4. In the survey published in the Aust. Vet. J. what proportion of papers did the statistician think had defects in the design of the experiments?

21-30%
10-20%
31-40%
>40%

5. In the survey of 271 papers, what proportion gave a justification for the sample size which they used?

21-30%
0-20%
31-40%
>40%

Yes, 30%.            Well done

Yes, none.       Well done