[deleted]
Dear Sir,
We fail to understand the rationale behind your groupings. While the definition of Categorization appears correct, the definition of Generalization given by you fails the test of exclusivity needed for differentiating between different groups. In fact it is nothing but Categorization by another name. You define Generalization as: "Drawing conclusions from the shared characterizes of the items within a category", which makes Generalization a subset of Categorization. This is against the literal interpretation and common usage of these terms.
The above two nomenclatures are related to perceptions of different characteristics that define the objects. Since these characteristics have not been described individually, we have to assume that you refer to the totality of the identifying characteristics. This makes your third category redundant. You define "subitization or numerousness" as "The ability to rapidly ascertain if one group of items is larger/smaller than another". The terms "larger/smaller" are used only in dimension related descriptions, such as spread (one dimension), area (two dimensions) and volume (three dimensions) or descriptions related to the numbers associated with those objects. Further, the terms "larger/smaller" imply comparison with other objects, which is nothing but measurement and whose results are always expressed in terms of scalar quantities, which are nothing but numbers. Numbers are the perceived property of objects by which we differentiate between similars. After we perceive an object, if there are no similar perceptions, we designate the number associated with that object as one. If there are other similar perceptions, depending upon their sequence, we give each a name. These are the number sequences. You also appear to admit it when you say: "children, even babies have this ability", because even babies perceive, though they cannot use number sequence effectively. But then you contradict yourself when you say: "Numerals are not required."
If "subitization or numerousness" is related to numbers as described above, then it becomes one of the identifying characteristic of the objects and thus a subset of the earlier categories making its separate classification redundant.
Tallying is nothing but comparison, which is nothing but measurement and whose results are always expressed in terms of scalar quantities, which are nothing but numbers. Yet, you say "tallying does not require numerals, a mark or notation suffices" without realizing that it is a self contradictory statement. Numerals are nothing but notations. In fact you go on to support this view while arriving at an opposite conclusion.
When you say: "While subitization can help explain counting up to 4 and possibly 5, something else is required to count beyond that", you have unknowingly referred to a very important mechanism. After the perception of one, the perceptions of two and three arise very rapidly. Hence these are so named in Sanskrit. For this reason, even many animals show this prowess of counting up to three. The perception of four requires higher intelligence. But still it is not very difficult. The perception of 5 onwards requires definitely higher intelligence not only about numbers, but interactions. Use of fingers is nothing but a type of notation. Hence the reference to parietal lobe is without much significance. What you appear to be hinting at is the difference in the mechanism of perception of numbers up to 3 and may be 4 and the other numbers. You call the first category subitization. This classification reminds us of an anecdote related to Einstein:
Einstein had two dogs: one big and one small. He wanted to have a box for them to protect them from cold. He called a carpenter and told him to prepare the box with two doors for entry of the two dogs. The carpenter said that there is no necessity for two doors and one will suffice. Einstein said that two are needed because the big dog cannot enter through the small door. The carpenter replied that the small dog could enter through the big door. At this Einstein is reported to have said: Since the carpenter solved a problem which a Nobel Laureate like him could not solve, he deserved a Nobel Prize. It appears you are talking like Einstein and we are talking like the Carpenter.
Kindly review you article based on the above observation. The descriptions of historical developments by you are o.k.
Regards,
basudeba