Abstract
The Importance of Replication in Comparative Psychology: The Lesson of Elephant Quantity Judgments
Highlights
To better understand the issue, it is important to take a step back from the non-verbal numerical systems that are commonly advanced in the literature
Commonly referred to as the “analog magnitude system,” seems to have no upper limit but is subject to a ratio limit in accordance with Weber’s Law, which states that the capacity to discriminate between two quantities becomes more accurate as the ratio between the smaller and the larger quantity increases (Beran, 2007)
While researchers still debate the existence of this small number system, they generally accept the analog magnitude system and use it to explain the full range of numerical competence in non-human animals
Summary
To better understand the issue, it is important to take a step back from the non-verbal numerical systems that are commonly advanced in the literature. Some researchers have hypothesized the existence of a precise mechanism devoted to the processing of small numbers.
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