The Interdependence category contains five task types that Steiner describes as combinatorial strategies illustrating how the individual contributions of members of a group can be combined in different ways.
[2] Examples provided in Forysth's summary of Steiner's work include shovelling snow and pulling a rope (tug of war).
[2] Examples provided in Forsyth's summary of Steiner's work include estimating the weight of an animal or averaging a job applicant's ratings.
[2] Examples provided in Forysth's summary of Steiner's work include climbing a mountain and eating a meal as a group.
[2] Discretionary tasks allow members of the group to determine which way they will use and/or combine individual contributions.