EDU PSYCH LAB

Educación, Psicología & Ciencia


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From theories to practice: Alex, what does “1”mean ?

Many authors have paid attention to the etiology of dyscalculia (here I use dyscalculia or math disability as equivalent terms, even is not very purist). In this post, we  address some of the most famous theories in this field and how we can link them to the real practice.
Almost everybody agrees with the two most famous theories in this area, which are actually an amazing work in numerical cognition. These theories propose that number troubles come from a weakness in number sense or numerosity coding.

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Mental Number Line

 

  1. The Theory of the Approximate Number System (ANS), and how we use it for representing large and approximate numbers via a mental number line (Dehaene, 2011).
    Is “8” big or small? – If we consider that a number lower than 5 is small.
    Is “6” big or small?
    Probably it´s much easier for a kid to say that 10 is a big number, due to the “mental line distribution”
  2. The Numerosity- Coding Hypothesis proposed by Butterworth (2010), which states that Math Disability is caused by a deficit in the processing of smaller and exact sets of numbers.
    These theories state that we all have a preverbal ability which contributes to the foundation for the Symbolic Number System that we use to learn mathematics.

 

numerosity

Blue or Yellow? – In the easy task, the blue stars are much more salient but in the difficult task, a number of stars are quite similar, thus the RT increases.

 

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Space, Time and Numbers!

As my father says, – Nothing better as calculate accurately the right time you need to rich the precise location where you wanted to be. Punctuality

Is there some relation between how humans perceive the space and time with numbers? Why?

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Photo by Louis Luangkesorn

 

In this post, we will discuss about – magnitude processing (one of my favorite topics in cognitive psychology), and how the brain deals with information about time, space, number and other magnitudes.

During the last two years, I spent a lot of time reading articles about numerical cognition, thus everything I´ll write here is linked to these discoveries and thanks to a hundred of researchers and academics that have been publishing about this topic (and struggling with it).

Rats, chimpanzees and pigeons are gifted at calculations

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A pigeon performing a math test. Willian van der Vliet

– What? That was also my reaction. I am struggling with a derivate and a pigeon understands math. Yes (feed them today!)
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