The design process of the probes was iterative with field tests involving people with
mild to moderate dementia. These included, on the one hand, usability tests with
small groups (e.g. three people tested the controls for Chrono TV). On the other hand,
exploratory field studies were done, where we either deployed an artifact in the real
context and reactions of people with dementia were observed (e.g. the Memory Window
was placed in the common room of a care home, and groups of 3-5 users with
mild to moderate dementia were observed throughout the day), or the artifact was
actively integrated in a group activity (e.g. the Chrono TV in a dementia support
group with six men with mild to moderate dementia). In addition, we organized a 2
hour-workshop at a care home where all six probes were set up in the common room
for residents to be tried out. About 20 people were present including residents (about
8 with dementia), relatives and caregivers. We collected written field notes.