Sam, the toenail-eating dog in Spring 2014, aged 15 years.
Jj is for Jottings 22. Auditory Sequential Memory: Some Useful Figures.
Thinking/cognition involves auditory sequential memory (also referred to as short term auditory processing or short term auditory memory) and visual sequential processing, working memory and executive function.
Auditory and visual sequential processing is how many pieces of information you can take in.
Working memory is how many pieces of information you can take in, hold it in your memory and DO something with it (manipulate the pieces).
Executive function is where you have taken in the information and remembered it, and now you are bringing in other information from long term memory and using visualisation (thinking in pictures) and conceptualisation (thinking in words) to manipulate the information and make associations i.e. think.
Auditory sequential memory is measured quite simply by using digit span – how many single numbers are remembered when presented one second apart. eg. 9-5-2-4. The average adult has a digit span of 7 (but this starts to decline after the late 20’s). At birth the sequential processing is 0. Typically it takes around 15 years to go from 0-7. Here’s a little guide:
Age Number of Digits
3 years 2-3
4 years 3-4
5 years 3,4,5
6 years 5-6
7-15 years 7 Continue reading →