# Spin and Wind Directions I: Identifying Entanglement in Nature and Cognition

arXiv: https://arxiv.org/abs/1508.00434 · HTML: https://mlsanity.com/paper/1508.00434/

## Key facts

- Cited by 4 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 31 Jul 2015.

## Built on by (most cited first, 4 of 4)

- [A Planck Radiation and Quantization Scheme for Human Cognition and Language](https://mlsanity.com/paper/2201.03306/) (2022)
- [Are Words the Quanta of Human Language? Extending the Domain of Quantum Cognition](https://mlsanity.com/paper/2110.04913/) (2021)
- [A quantum semantic framework for natural language processing](https://mlsanity.com/paper/2506.10077/) (2025)
- [The production of meaning in the processing of natural language](https://mlsanity.com/paper/2603.20381/) (2026)

## Abstract (arXiv)

We present a cognitive psychology experiment where participants were asked to select pairs of spatial directions that they considered to be the best example of 'Two Different Wind Directions'. Data are shown to violate the CHSH version of Bell's inequality with the same magnitude as in typical Bell-test experiments with entangled spins. Wind directions thus appear to be conceptual entities connected through meaning, in human cognition, in a similar way as spins appear to be entangled in experiments conducted in physics laboratories. This is the first part of a two-part article. In the second part we present a symmetrized version of the same experiment for which we provide a quantum modeling of the collected data in Hilbert space.