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Description: In this study we used a screen-based violation of expectation (VOE) paradigm to investigate whether 9-month-old infants process qualitatively different information about novel objects when an object is introduced in a third-party joint visual attention versus an observed non-joint social interaction context. In 12 test trial videos, an object was shown together with two adults (action phase). The interpersonal sharedness between the two actors was manipulated in a way that they either look at the object together after previous mutual eye contact or they look at it individually without sharing mutual eye contact at any point. After each video, the scene was occluded before it revealed one of three different outcomes: the object infants had just seen in the action phase (no change, baseline), the object they had just seen but at a novel position (location change), or a new object (identity change). By manipulating both the third-party joint attention context and features of the object in the subsequent outcome phase, we aimed to examine whether observed communicative context biases infants to encode surface features which support learning about object kinds (i.e., object identity) over spatial-temporal information (i.e., object location). Note: In the overall study (published in Open Mind: https://doi.org/10.1162/opmi_a_00114), we refer to this project as “Experiment 2”. This OSF project is directly linked to the OSF project " Investigating the Role of Gaze Cues on the Communication-Induced Memory Bias" (https://osf.io/t4yqj/).