% pubman genre = article @article{item_2455364, title = {{Chimpanzee culture extends beyond matrilineal family units}}, author = {Van Leeuwen, Edwin J. C. and Mundry, Roger and Cronin, Katherine A. and Bodamer, Mark and Haun, Daniel B. M.}, language = {eng}, issn = {0960-9822}, doi = {10.1016/j.cub.2017.05.003}, publisher = {Cell Press}, address = {London, UK}, year = {2017}, date = {2017-06-19}, abstract = {{The {\textquoteleft}grooming handclasp{\textquoteright} is one of the most well-established cultural traditions in chimpanzees. A recent study by Wrangham et al. [1] reduced the cultural scope of grooming-handclasp behavior by showing that grooming-handclasp style convergence is {\textquotedblleft}explained by matrilineal relationship rather than conformity{\textquotedblright} [1]. Given that we previously reported cultural differences in grooming-handclasp style preferences in captive chimpanzees [2], we tested the alternative view posed by Wrangham et al. [1] in the chimpanzee populations that our original results were based on. Using the same outcome variable as Wrangham et al. [1] {\textemdash} the proportion of high-arm grooming featuring palm-to-palm clasping {\textemdash} we found that matrilineal relationships explained neither within-group homogeneity nor between-group heterogeneity, thereby corroborating our original conclusion that grooming-handclasp behavior can represent a group-level cultural tradition in chimpanzees.}}, journal = {{Current Biology}}, volume = {27}, number = {12}, pages = {R588--R590}, }