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of lithic manufacture (debitage).

The extent of reduction, also known as the retouch intensity, is denoted by a measure of the reduction index. There are many quantitative and qualitative methods used to measure this.

Measuring retouch

Quantitative measurements

There are three indices of retouch that offer significant inferential power in determining the amount of mass lost in the process of retouching. Despite particular weaknesses associated with each method, the following

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