. . "000253594600002" . "P(GD206/05/H012), V, Z(MSM6007665801), Z(MZE0002701402)" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Although head rotations are frequent patterns in play behavior in many mammalian species and differ from head movements used in other contexts, they have not been quantitatively described and their function remains unclear. The head rotations of free-ranging Hanuman langurs (Semnopithecus entellus) were described. Two hypotheses about their function were tested. Either the head rotations serve to create unexpected situations and should therefore occur in both solitary and social play and be very variable or they serve as play signals and should therefore occur only in social play and are ritualized. If head rotations have both functions, they should be less variable in social play. The results do not support the function of head rotations as play signals but, rather, suggest that head rotations may serve to create unexpected situations in play."@en . "RIV/00027014:_____/08:#0000810!RIV09-MZE-00027014" . . . . "Head Rotation in the Play of Hanuman Langurs (Semnopithecus entellus): Description and Analysis of Function" . . "RIV/00027014:_____/08:#0000810" . "Head Rotation in the Play of Hanuman Langurs (Semnopithecus entellus): Description and Analysis of Function" . "Petr\u016F, M." . . "play; head rotation; self-handicapping; communication; Semnopithecus entellus"@en . . . . "Rota\u010Dn\u00ED pohyby hlavy p\u0159i h\u0159e u hulman\u016F posv\u00E1tn\u00FDch (Semnopithecus entellus): Popis a anal\u00FDza funkce"@cs . . . . "Rota\u010Dn\u00ED pohyby hlavy p\u0159i h\u0159e u hulman\u016F posv\u00E1tn\u00FDch (Semnopithecus entellus): Popis a anal\u00FDza funkce"@cs . "Head Rotation in the Play of Hanuman Langurs (Semnopithecus entellus): Description and Analysis of Function"@en . "Although head rotations are frequent patterns in play behavior in many mammalian species and differ from head movements used in other contexts, they have not been quantitatively described and their function remains unclear. The head rotations of free-ranging Hanuman langurs (Semnopithecus entellus) were described. Two hypotheses about their function were tested. Either the head rotations serve to create unexpected situations and should therefore occur in both solitary and social play and be very variable or they serve as play signals and should therefore occur only in social play and are ritualized. If head rotations have both functions, they should be less variable in social play. The results do not support the function of head rotations as play signals but, rather, suggest that head rotations may serve to create unexpected situations in play." . "\u0160pinka, Marek" . "1" . "Head Rotation in the Play of Hanuman Langurs (Semnopithecus entellus): Description and Analysis of Function"@en . "Journal of Comparative Psychology" . . . . "122" . "3"^^ . "0735-7036" . . "Rota\u010Dn\u00ED pohyby hlavy, kter\u00E9 se \u010Dasto vyskytuj\u00ED v r\u00E1mci hrav\u00E9ho chov\u00E1n\u00ED u mnoha sav\u010D\u00EDch druh\u016F a li\u0161\u00ED se od pohyb\u016F hlavy , kter\u00E9 p\u0159ich\u00E1zej\u00ED v jin\u00FDch souvislostech, nebyly dosud kvantitativn\u011B pops\u00E1ny a jejich funkce z\u016Fst\u00E1v\u00E1 nejasn\u00E1. V t\u00E9to pr\u00E1ci jsou pops\u00E1ny rota\u010Dn\u00ED pohyby hlavy u voln\u011B \u017Eij\u00EDc\u00EDch hulman\u016F posv\u00E1tn\u00FDch (Semnopithecus entellus). Byly testov\u00E1ny dv\u011B hypot\u00E9zy funkce rota\u010Dn\u00EDch pohyb\u016F: slou\u017E\u00ED bu\u010F k vytv\u00E1\u0159en\u00ED ne\u010Dekan\u00FDch situac\u00ED a pak se budou objevovat p\u0159i samot\u00E1\u0159sk\u00FDch i spole\u010Dn\u00FDch hr\u00E1ch a budou velmi variabiln\u00ED, nebo signalizuj\u00ED hru a pak se budou objevovat jen p\u0159i spole\u010Dn\u00FDch hr\u00E1ch a budou ritualizov\u00E1ny. Pokud maj\u00ED rota\u010Dn\u00ED pohyby hlavy ob\u011B funkce, budou p\u0159i spole\u010Dn\u00FDch hr\u00E1ch m\u00E9n\u011B variabiln\u00ED. V\u00FDsledky nepotvrdily, \u017Ee by rota\u010Dn\u00ED pohyby hlavy signalizovaly hru, sp\u00ED\u0161e nazna\u010Duj\u00ED, \u017Ee rotace hlavy m\u016F\u017Ee slou\u017Eit k vytv\u00E1\u0159en\u00ED ne\u010Dekan\u00FDch situac\u00ED p\u0159i h\u0159e."@cs . "1"^^ . . . . "10"^^ . "[87AD66C57BB8]" . . "369864" .