Twins+Handwriting

=Twin Handwriting Discriminability= Handwriting is influenced by physiology, training, and other behavioral factors. The study conducted by Sargur Srihari, Ph.D.; Chen Huang,  M.S.; and Harish Srinivasan,  M.S. consisting of 206 pairs of twins, each writing a one page sample. The results showed that twins had less disriminable handwriting compaired to non-twins. With an error rate of 12.9% for twins and 3.7% for non-twins. (Error rate with identical twins were higher than fraternal twins.)

1. What is the main idea of the paper?
The study was to examine the indivuality of handwriting compaired with twins and non-twins.

2. What experiment, if any, was performed?
The 206 pairs of twins wrote a one page sample and these samples were examined, scanned, and tested. 1236 verification tests were used. 824 tested the differences of twin handwriting. 1648 tests compaired non-twin handwriting.

3. Was the experiment GS or BS? That is, was there a large sample size, a cause-and-effect relationship, etc.
The experiment had a very large sample size. The authors utilized 206 pairs of twins and a large group of non-twins (general population). There were several tests used in the process and various handwriting samples. The downside are the large error rates. 3.7% error rate in thw non-twin tests, however a 12.91% error rate in the twin handwriting tests.

4. What did the authors determine about forensic graphology?
The test determind the discriminability of twin handwriting is a useful measure of the individuality of handwriting.

5. Name at least five interesting facts from the paper that you think the rest of the class might appreciate.
1. The testing that was conducted to compare the writing sample of same content and different content. The different content had a lower error rate than the same content. 2. The CEDAR-FOX. This program (as seen below) translate handwriting into binary, and then converts that into a colored diagram. This can be used as an easy way to compare gradient, structure, and concavity. 3. Twins unique handwriting. 4. DD,DS,SD technique 5. Error rates.