Mental Age Assessment

The following was developed as a mental age assessment by the School
of Psychiatry at Harvard University. Take your time & see if you can
read each line aloud without a mistake. The average person over 40
years of age cannot do it!

1. This is this cat
2. This is is cat
3. This is how cat
4. This is to cat
5. This is keep cat
6. This is an cat
7. This is old cat
8. This is fart cat
9. This is busy cat
10. This is for cat
11. This is forty cat
12. This is seconds cat.

Now go back and read the third word in each line from the top down!