Effect of Rank on Chimpanzee Gesture Use

The Effect of Rank Nicole Scott & Stuart Semple Roehampton University IPS 2008: Edinburgh, UK Gesture Use of Chimpanzees ( Pan troglodytes ):

Communicating social rank ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Communicating through gesture ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Rationalizing gesture use ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Aim & Predictions ,[object Object],[object Object],[object Object],[object Object]

Predictions (cont.) ,[object Object],[object Object],[object Object],[object Object]

Methods ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Determining rank ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How are gestures used? ,[object Object],High rank Low rank Aggressive gestures Reassurance gestures Submission gestures ‘ Greeting’ gestures Give gestures:

Diversity of gestures ,[object Object],[object Object],[object Object],Males -0.900* 0.037 C.C. Sig. (2-tailed) Aggression 0.667 0.219 C.C. Sig. (2-tailed) Submission -0.300 0.624 C.C. Sig. (2-tailed) Reassurance -0.200 0.747 C.C. Sig. (2-tailed) Greet RANK CONTEXT

In what forms are gestures given? ,[object Object],[object Object],Gestures given : Auditory gestures Social rank

Auditory gestures ,[object Object],[object Object],[object Object],0.861 18 0.044 Females 0.505 5 -0.400 Males Sig. N C.C.

No rank effect - Males No. of interactions

No rank effect - Females No. of interactions

What is their function? ,[object Object],[object Object],Proportion interactions gesture given Difference in rank Same sex interactions :

Distance between ranks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],0.564 17 0.588 Females 0.689 4 0.430 Males Sig. df t

Conclusions ,[object Object],[object Object],[object Object],[object Object]

What does it all mean? ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],Thank You! Any Questions?

Effect of Rank on Chimpanzee Gesture Use

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