Recursion involves nesting a structure within another structure, or embedding one sequence inside another, whether it's a sequence of words, events, or physical objects.

Ferrigno and colleagues tested recursion in both monkeys and humans. Ten U.S. adults recognized recursive symbol sequences on a nonverbal task and quickly applied that knowledge to novel sequences ...

Monkeys First, Then Crows. In a 2020 study, researchers found that monkeys could generate recursive sequences after training. In the experiment, monkeys and humans were shown symbols, such as ...

A multi-institutional research team found the cognitive ability to represent recursive sequences occurs in humans and non-human primates across age, education, culture and species.

Recursive patterns are fundamental to syntax and semantics in human language. An example is the nominal phrase "the dog of the wife of the pensioner." ... Learning symbol sequences.