Complex Tasks Force Hand Laterality and Technological Behaviour in Naturalistically Housed Chimpanzees: Inferences in Hominin Evolution

<table>Different tasks performed by some of the chimpanzees at Fundació Mona (Girona, Spain): unimanual spontaneous task, unimanual with precision grip (simple reaching), and bimanual complementary task (hose task) with tool use. (Credit: Miquel Llorente.)</table>

The Scientific World Journal

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Figure 1

Figure 1: Complex Tasks Force Hand Laterality and Technological Behaviour in Naturalistically Housed Chimpanzees: Inferences in Hominin Evolution 