Website of the Freeplay sandbox dataset (PInSoRo)
Social interactions are annotated using a dedicated annotation tool. The following annotations are made, for each child:

Commonly observed social dynamics are mapped to these constructs. For instance, a sequence during which a child appears to be bored is annotated as passive; an annoyed child would be frustrated, and the child being annoying can be labelled as exhibiting an adversarial behaviour.
Other example include: a gentle hand grabbing would be assertive vs a not-so-gentle hand grabbing that would be adversarial; manipulative or bossy behaviours are labelled as assertive; when children laugh together, they exhibit a pro-social attitude, etc.
We detail hereafter the exact meaning of these categories.
| Construct | Details |
|---|---|
| goal-oriented | purposeful play, implicit action planning, structured play |
| aimless | unstructured play, silly play |
| adult seeking | ask question, seek approval |
| no play | does not perform any obvious activity |
Note that structured play might or might no be be on topic: a structured activity unrelated to the offered touchscreen/drawing activity should still be labelled as goal-oriented.
| Construct | Details |
|---|---|
| solitary play | |
| onlooker | child looking at the other for a prolongated period of time, without engaging |
| parallel play | |
| associative play | |
| cooperative play |
| Construct | Details |
|---|---|
| pro-social | |
| adversarial | |
| assertive | |
| frustrated | |
| passive |