Object permanence tests on gibbons (Hylobatidae).

@article{Fedor2008ObjectPT,
  title={Object permanence tests on gibbons (Hylobatidae).},
  author={Anna Fedor and Gabriella Skoll{\'a}r and N{\'o}ra Szerencsy and M{\'a}ria Ujhelyi},
  journal={Journal of comparative psychology},
  year={2008},
  volume={122 4},
  pages={403-17}
}
Ten gibbons of various species (Symphalangus syndactylus, Hylobates lar, Nomascus gabriellae, and Nomascus leucogenys) were tested on object permanence tasks. Three identical wooden boxes, presented in a linear line, were used to hide pieces of food. The authors conducted single visible, single invisible, double invisible, and control displacements, in both… CONTINUE READING