This paper examines variability and the emergence of the Howiesons Poort within the Middle Stone Age lithic technologies of Klasies River Mouth. Here I present a pattern recognition study using multivariate statistical techniques examining the data presented by [Singer, R., Wymer, J.J., 1982. The Middle Stone Age at Klasies River Mouth in South Africa. Chicago University Press, Chicago]. Using this model, the Middle Stone Age (MSA) lithics from Klasies River Mouth load on three main factors: (1) a Levallois flake manufacture factor, (2) a blade manufacture factor, and (3) a worked point factor. The MSA I assemblage from Cave I and the MSA 11 assemblage from Shelter I a correlate strongly with the worked point factor, the MSA 11 assemblage from Cave I correlates strongly with the Levallois factor, and the Howiesons Poort assemblage from Shelter I a correlates strongly with the blade factor. The Howiesons Poort from Shelter I a is differs more from all other industries than the remaining industries do from each other. In addition, the Howiesons Poort from Cave 2 groups closely with the MSA III assemblage from Shelter la due to similarities in raw material frequencies. (c) 2006 Elsevier Ltd. All rights reserved.