Eight photographs of a room with two easy chairs, a low table and some toys on the floor. A child is in each photograph, sometimes with a mother figure, sometimes with a stranger and sometimes either alone or with both people. The captions describe what is happening in each photograph:

1. After a mother and infant have settled, a stranger enters and sits quietly on the free chair.
2. After an interval, the stranger starts talking with the mother and, after a while, starts to play with the child.
3. Then a little later, the mother gets up and leaves the room.
4. The stranger stays and tries to interact with the child.
5. After a period, the mother then re-enters. The stranger leaves.
6. After a further interval, the mother leaves again, leaving the child alone.
7. After a period, the stranger enters, offers comfort to the child if necessary, and tries to play with the child.
8. The mother returns, the stranger leaves, and the mother and child remain in the room for a few minutes.