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- W2071034262 abstract "The use of stone cutting tools opened a novel adaptive niche for hominins. Hence, it has been hypothesised that biomechanical adaptations evolved to maximise efficiency when using such tools. Here, we test experimentally whether biometric variation influences the efficiency of simple cutting tools (n = 60 participants). Grip strength and handsize were measured in each participant. 30 participants used flint flakes, while the other 30 used small (unhafted) steel blades. Variations in basic parameters of tool form (length, width, thickness, cutting edge length) were recorded for the 30 flint flakes. It was ensured that mean handsize and strength in each participant group were not significantly different to investigate the effect of tool variation. The experimental task required cutting through a 10 mm-diameter hessian rope. Cutting efficiency was measured using both ‘Number of cutting strokes required’ and ‘Total time taken’. Results show that both efficiency measures were significantly correlated with handsize using all 60 participants. However, no significant differences were found between the flake and blade groups in terms of mean efficiency. Nor was any significant relationship found between tool form parameters and efficiency in the flint flake group. We stress that our results do not imply that tool form has no impact on tool efficiency, but rather that – all other things being equal – biometric variation has a statistically significant influence on efficiency variation when using simple cutting tools. These results demonstrate that biomechanical parameters related directly to efficiency of use, may plausibly have been subject to selection in the earliest stone tool-using hominins." @default.
- W2071034262 created "2016-06-24" @default.
- W2071034262 creator A5009259750 @default.
- W2071034262 creator A5090886587 @default.
- W2071034262 date "2011-07-01" @default.
- W2071034262 modified "2023-10-16" @default.
- W2071034262 title "Technology based evolution? A biometric test of the effects of handsize versus tool form on efficiency in an experimental cutting task" @default.
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- W2071034262 doi "https://doi.org/10.1016/j.jas.2011.02.032" @default.
- W2071034262 hasPublicationYear "2011" @default.
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