1893, John Clark Ridpath, Great races of mankind, It has been claimed by some modern scientists that ambidexterity, or both-handedness, is the natural condition of the race, and that the use of one hand or the other by preference is an acquired habit belonging to the period of development in childhood.
2012, Sally Smith, No Easy Answer: The Learning Disabled Child at Home and at School, Until recently, and even now, both-handedness (ambidextrousness) has been mentioned as a cause of reading difficulties rather than seen as an indicator of immaturity.
2013, Marjorie Garber, Bisexuality and the Eroticism of Everyday Life, The binary nature of the study in effect erases mixed or both-handedness.
The property of involving two sides, approaches, or orientations.
1867, C.H. Spurgeon, The Sword and the trowel, Serving God with one hand and the devil with the other is a style of both-handedness from which we may well pray to be saved.
2011, Nilashis Nandi, Chirality in Biological Nanospaces: Reactions in Active Sites, The opposite-handednesses of the monolayer domains composed of D- and L-enantiomers, presence of both-handedness in racemic domains, ...
2014, D. Stanley-Jones & ‎K. Stanley-Jones, The Kybernetics of Natural Systems: A Study in Patterns of Control, They exhibit accordingly that property of amphi-cheirality or both-handedness which was noted in the laterales nerves of the lamprey, betokening a possible affinity with the circular neural ring of the jelly-fish.
