Lion-tailed macaques show a stable direction and reinforcement of hand preference in simple reaching tasks over several years

Title:

Lion-tailed macaques show a stable direction and reinforcement of hand preference in simple reaching tasks over several years

Creator:

Kuběnová, Barbora, Lhota, Stanislav, Tomanová, Veronika, Blažek, Vladimír, and Konečná, Martina

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:dbc59405-69d0-49a6-a27f-45b28ba6ddd8
uuid:dbc59405-69d0-49a6-a27f-45b28ba6ddd8
doi:10.25225/jvb.21076

Subject:

handedness, hand use, laterality, unimanual behaviour, and Macaca silenus

Type:

model:article and TEXT

Format:

počítač and online zdroj

Description:

Research on hand preference in non-human primates provides information about the evolutionary origin of population-level bias of human handedness. Human hand preference has been shown to remain stable throughout an individual's lifespan. However, the stability of hand preference and its change with age in non-human primates remains questionable. We recorded hand use in lion-tailed macaques (Macaca silenus) during simple reaching tasks in three time periods over six years. We tested the effect of age and body posture on the direction and strength of hand preference in 23 observed individuals. In a subsample of 13 individuals followed for two or three subsequent time periods, we assessed the stability of hand preference across study periods. The direction of hand preference was highly stable; we detected no individuals changing from a left- to right-, or right- to left- preference and repeated quantitative measures of hand preference were correlated among subsequent study periods. Hand preference was, however, reinforced in older individuals and an individual's hand preference was stronger in postures with both hands free for foraging. Stable hand preference at an individual level, and its reinforcement over an individual's lifetime, is emerging as a robust finding across the primate order.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

1-13

Source:

Journal of Vertebrate Biology | 2022 Volume:71 | Number:1

Harvested from:

CDK

Metadata only:

false