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In the growing body of research on sign language linguistics, one area of inquiry considers an important component of all sign languages — handshapes — and whether the use of specific kinds increase in direct relation to the ease of their formation. Author Jean Ann provides significant clarification in her book Frequency of Occurrence and Ease of Articulation of Sign Language Handshapes: The Taiwanese Example.

Ann employs a straightforward methodology in her examination of the use of Taiwan Sign Language (TSL) handshapes in five succinct chapters. In the first chapter, she discusses the two approaches linguists have taken toward understanding languages, and how these theories have influenced sign language researchers’ consideration of the ease of articulation and frequency of handshapes. In her second chapter, Ann delineates the physiology of hands and explains why certain digits move with greater dexterity than others.

Ann applies this physiological information in the third chapter to construct a model for determining the ease of articulation of any logically possible handshape. She divides the handshapes into three categories, ranging from impossible to easy. In the fourth chapter, she applies her model to examine the patterns of TSL, first by describing the 56 handshapes identified in TSL, then determining how often each is used. She then compares the usage data to the handshapes’ ease of formation. The final chapter summarizes her findings and suggests implications of this work that are bound to generate further speculation and study on sign language handshapes in the future.