(I would get things like 'gold' or 'turquoise' when I wanted to keep to the 11 'universal' colors). Recognition would be better if I could use the pretrained types Alexa provides (colors, numbers, etc.), but those sets are too large. I did this so I could make specific variants more easily, say for comparing multisyllabic and monosyllabic sets. For example, I have a list of eleven colors for the 'color' type of test. I created a generalized system for allowing the generation of any type of stimulus by creating a list all the possible answers. At this point there aren't any ways around this, although I could monitor these situations and allow continuation with the wake word.Īnother challenge comes from Alexa's models for speech recognition. I got around this somewhat by using a very quiet reprompt, but that only extends the time limit by another 8 seconds to sixteen. If a person is slow in response because they are rehearsing or working some mnemonic, the test will abruptly end. The first challenge with this skill is dealing with Amazon's fixed limit of 8 seconds silence before shutdown. If you have an Alexa enabled device, you can enable it in the Amazon Store Challenges I ran into This allows a more precise calculation of score, although it is not as prevalent in the literature.Īfter completing the test (which takes 7-8 minutes), you will get a score and the option for further testing. A variation suggested by Woods (2011) increases more quickly and will step up for each correct answer and step down (instead of stopping) for two errors. The traditional version as implemented in the Wechsler IQ test gives you two chances at each step and stops when you fail twice for the same span size. I also implemented an option to administer the test using different protocols. Prior research done on letters finds most people have a shorter (worse) letter span than digit span. This accesses memory differently and tests different working memory components.Īlthough digit span is the best known test, I also implemented options to use letters, colors and names as alternatives. After testing this 'forward span', you then are tested on 'backward span' which is a harder test where you have to say the sequence backwards. Memory span asks you to repeat back sequences that the tester says out loud, increasing the sequence length with each success to see the most you can do. Digit span is a very well standardized test used extensively in situations like mental status testing or IQ testing. This page is part of CLOSER’s ‘A guide to the cognitive measures in five British birth cohort studies’.I'm an Alexa developer who previously worked in Psychiatry and evaluated a lot of people's cognitive functions.
0 Comments
Leave a Reply. |