Alzheimer's a funny one

[tazsguineas]

Quick Check for Alzheimer's
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> >
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> > The following was developed as a mental age assessment by the School of
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> > Psychiatry at Harvard University . Take your time and see if you can read
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> > each line aloud without a mistake. The average person over 40 years of
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> > age cannot do it!
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> >
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> > 1. This is this cat.
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> > 2. This is is cat.
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> > 3. This is how cat.
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> > 4. This is to cat.
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> > 5. This is keep cat.
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> > 6. This is an cat.
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> > 7. This is old cat.
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> > 8. This is fart cat.
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> > 9. This is busy cat.
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> > 10. This is for cat.
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> > 11. This is forty cat.
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> > 12. This is seconds cat.
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> >
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> > Now go back and read the third word in each line from the top down