Beliefs about aging and Alzheimer's disease in three domains.

This repeated measures study examined undergraduate students' beliefs about aging and Alzheimer's disease (AD) in the cognitive, social, and physical domains. Students rated typical 25-year-olds (young target), typical 75-year-olds (old target), and typical institutionalized persons with AD (AD target) on 46 statements about cognitive, physical, and social abilities. Beliefs about aging were found to be generally negative in the cognitive and physical domains but positive in the social domain, consistent with the age-stereotyping literature. Interestingly, by comparing ratings of old and AD targets, beliefs were found to be generally negative in the cognitive and social domains but positive in the physical domain. AD is perceived to be a disease primarily of the mind, but in comparison to differences expected with aging, physical prowess is enhanced. Documenting beliefs, a first step toward modifying stereotyped behaviour, could have significant effects on the health and well-being of older adults and persons with AD.

Broadening the patient safety agenda to include safety in long-term care.

The recent patient safety literature has included less of an emphasis on long-term settings than on research in the acute care sector. Recognizing this knowledge gap in our understanding of safety in the long-term care sector, the Canadian Patient Safety Institute, Capital Health (Edmonton) and CapitalCare (Edmonton) have collaborated to create a research and action agenda for improving resident safety in Canadian long-term care settings. This collaboration resulted in the development of a background paper highlighting the current state of the science and 14 key-informant interviews with stakeholders across Canada. The background paper subsequently informed an invitational round-table discussion. Key findings from the key-informant interviews as well as implications for research are described in this article.

Searching by rules: pigeons' (Columba livia) landmark-based search according to constant bearing or constant distance.

Pigeons (Columba livia) searched for a goal location defined by a constant relative spatial relationship to 2 landmark. For one group, landmark-to-goal bearings remained constant while distance varied. For another group landmark-to-goal distances remained constant while direction varied. Birds were trained with 4 interlandmark distances and then tested with 5 novel interlandmark distances. Overall error magnitude was similar across groups and was large than previously reported for Clark's nutcrackers (Nucifraga columbiana). During training, error magnitude increased with interlandmark distance for constant-bearing but not constant-distance birds. Both groups searched less accurately along the parallel to landmarks than along the perpendicular axis. Error magnitude increased with novel extrapolated interlandmark distances but not with novel interpolated distances. Results suggest modest geometric rule learning by pigeons.