Testing with Iterative Design Process:
To test our application of amnesia evaluation, we will set up an experiment with two groups. Each group will contain 25 experimental subjects. The control group will be clinically determined non-amnesia patients and the experimental group will be predetermined clinical amnesia patients. We hypothesize that the score of the evaluation for the control group will be different from the score of the control group. The null hypothesis is there will be no difference in the score of the two groups’ evaluation. We will be using a one-tailed two sample T-test with a significance level of 0.05 and degree of freedom 48, giving us a critical value of – 1.68, figure 2. Our statistics value is the difference of group averages divided by the standard error of the difference. If the value of our statistic is less than the critical value, we will reject the null and accept the alternative hypothesis. We then can conclude that amnesia participants will have a lower score than normal participants. If the value of the statistic is larger than the critical value, we then have to reconsider the evaluation methods. Ideally, the evaluation will be examining the participant’s short-term memory and long-term memory; participants with amnesia should receive a lower score than participants without amnesia. In order to test which part of the evaluation has an error, we will do another experiment that has the participants only do the short-term memory or the long-term memory part of the evaluation. The reason that we combined the evaluation of short term and long term memory evaluation is that in order for memory to be encoded into long term memory, the memory will have to pass through short term memory first and then encode into long term memory (Guillery-Girard et al., 2006). After having the participants finish the evaluation of short term and long term memory separately, we will do the one-tailed two sample T-test again to see which part of the evaluation has an error in and redesign the evaluation’s method or question until the results match with our hypothesis.
If the application fails to test amnesia with the application, we will have to alter the application questionnaire to the Galveston Orientation and Amnesia Test (GOAT). This questionnaire is less conventional than the questionnaire we desire because the answer to these questionnaires needs to be evaluated by a family member or a physician. The GOAT contains 14 questions, points ranging from 2 to 30, a total of 100 possible points. Participants who score 75 or more for two consecutive days are considered not experiencing amnesia; scores between 66 and 75 are borderline status, and below 66 are considered experiencing amnesia (Furbringer e Silva & de Sousa, 2007)