This ethnography describes how persons with dementia interact with cognitively intact persons in housing with care for the elderly. The results, drawing upon 31 observation sessions and nine interviews, are described under the following themes, which were interpreted from the standpoint of social interaction theory: interaction with expression of satisfaction, disorientation, and dissociation. Interaction provided satisfaction, but did not always reflect a positive experience. Awareness in persons with dementia seemed to be greater than others perceived and, as a result, interaction was adversely affected by frequent well-intentioned corrections and comments. Participation in interaction can be encouraged and feelings of indignation avoided by assuming that persons with dementia are aware of their situation and how others behave toward them. Sensitivity is required to interpret individuals' expressions of desire not to participate, while simultaneously it is important to try to interpret why they want to refrain.

Aim.  To develop a test of cognitive performance in persons with moderate-to-severe dementia.

Background.  Various instruments are used to assess the course of dementia and to evaluate treatments in persons with dementia. Most neuropsychological assessments are inappropriate for measuring cognitive abilities in persons with severe dementia, because these persons perform at floor level in such measurements.

Design.  A cross-sectional research design.

Methods.  The test (Clinical Evaluation of Moderate-to-Severe Dementia; Swedish acronym: KUD) was developed from a pool of 25 test items with the final KUD consisting of 15 items. Reliability and validity were established using 220 subjects (with various dementia diagnoses) with scores of Mini-Mental State Examination between 0–20. Approximately two weeks after the first test, 116 of the original 220 subjects were retested.

Results.  A factor analysis with the 15-item scale revealed an interaction factor comprising three items and a cognitive performance factor with 12 items. The internal consistence reliability was 0·93 for the KUD (Cronbach’s alpha). Test–retest reliability was also high (0·92) and correlation between the KUD and the MMSE (≤20) was high (r = 0·80).

Conclusion.  The KUD seems to be a valid, reliable performance-based assessment scale for measuring cognitive performance in persons with MMSE score below 12 or 15 points.

Relevance to clinical practice.  It is of outmost interest that cognitive performance can be easily followed for persons with moderate-to-severe dementia in, for example, drug therapies and other therapies, but also in terms of treatment of and support to the person based on his or her abilities.

The study describes how relationships are created with persons with moderate to severe dementia. The material comprises 24 video sequences of Relational Time (RT) sessions, 24 interviews with persons with dementia and eight interviews with professional caregivers. The study method was Constructivist Grounded Theory. The categories of 'Assigning time', 'Establishing security and trust' and 'Communicating equality' were strategies for arriving at the core category, 'Opening up', which was the process that led to creating relationships. Both parties had to contribute to create a relationship; the professional caregiver controlled the process, but the person with dementia permitted the caregiver’s overtures and opened up, thus making the relationship possible. Interpersonal relationships are significant to enhancing the well-being of persons with dementia. Small measures like RT that do not require major resources can open paths to creating relationships.