| Episode 2: owner, dog and stranger |
The stranger entered the room, sat quietly for 1 min, conversed with the owner for the second minute, approached the dog and attempted to stimulate play during the last minute. At the end of this episode the owner left the room unobtrusively. |
| Episode 3: stranger and dog (1st separation episode) |
The stranger continued to play with the dog if it was willing; if it was inactive or distressed, the stranger attempted to distract it with play or by providing verbal and tactile comfort. |
| Episode 4: owner and dog (1st reunion episode) |
The owner entered the room and greeted and/or comforted the dog as usual after returning from work or shopping. The stranger quietly exited the room. The owner had been told that she/he was free to play with the dog throughout the episode. At the end of this episode the owner left the room. |
| Episode 5: dog alone (2nd separation episode) |
The dog remained alone for 3 min, but was constantly observed by the owner and researchers on the monitor in the adjacent room. |
| Episode 6: stranger and dog |
The stranger entered the room and followed the same protocol as in episode 3. |
| Episode 7: owner and dog (2nd reunion episode) |
The owner entered the room greeted the dog as though he/she had just returned from work or shopping. The stranger left the room unobtrusively. |
| Episode 8: dog alone (3rd separation episode) |
The dog remained alone and was monitored as in episode 5. |
