Joint Activity and Interdependence

The IHMC Team is developing the joint activity interdependence analytic component. This component creates a structured model called a joint activity graph that represents the joint activity of individuals within a team. Using this model, we provide event based measures of joint activity efficiency, hinderance, and redundancy in real-time. These measures can be obtained at all levels of granularity for the joint activity.

Hinderance time refers to the duration during which an individual’s progress is impeded due to a sequential interdependence on another individual.

Joint activity efficiency, in terms of time, is the ratio of time spent actively contributing to the joint activity, to the shortest possible time required to complete the task. It is measured individually for each team member and for the entire team.

The redundancy ratio indicates how much time multiple individuals spend contributing to the same task without any additional benefit to the task.

Additionally, the joint activity model can be used to identify differences in individual experiences and determine if these differences are relevant to the joint activity.

The real-time measures have been found to be correlated with expert assessments of “good” and “bad” teams, as well as with a built-in task metric (score). This suggests that the model is robust and can be used during runtime to infer, assess, and predict team processes and performance.