Companion animals have the potential to create new meaning and bring comfort in the lives of persons who experience the devastating effects of dementia of the Alzheimer's type (DAT). Research studies conducted using companion animals with persons diagnosed with DAT provide evidence that the presence of a companion animal can increase socialization and decrease agitation behaviors. In addition, caregivers can benefit from reduced physiological stress by petting a companion animal. Using Reisberg's staging system, a caregiver can plan activities with companion animals that correspond to the functional and cognitive ability of the person with DAT.
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