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Behavior Research Methods

, Volume 48, Issue 4, pp 1580–1590

First Online: 20 October 2015


Vision scientists are increasingly relying on the point-light technique as a way to investigate the perception of human motion. Unfortunately, the lack of standardized stimulus sets has so far limited the use of this technique for studying social interaction. Here, we describe a new tool to study the interaction between two agents starting from point-light displays: the Communicative Interaction Database - 5AFC format CID-5. The CID-5 consists of 14 communicative and seven non-communicative individual actions performed by two agents. Stimuli were constructed by combining motion capture techniques and 3-D animation software to provide precise control over the computer-generated actions. For each action stimulus, we provide coordinate files and movie files depicting the action as seen from four different perspectives. Furthermore, the archive contains a text file with a list of five alternative action descriptions to construct forced-choice paradigms. In order to validate the CID-5 format, we provide normative data collected to assess action identification within a 5AFC tasks. The CID-5 archive is freely downloadable from and from the supplementary materials of this article.

KeywordsCommunicative interaction Point-light Biological motion 5AFC Database Electronic supplementary materialThe online version of this article doi:10.3758-s13428-015-0669-x contains supplementary material, which is available to authorized users.

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Autor: Valeria Manera - Tabea von der Lühe - Leonhard Schilbach - Karl Verfaillie - Cristina Becchio


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