Alzheimer’s disease is classified into three broad stages: (1) preclinical Alzheimer’s disease; (2) mild cognitive impairment (MCI) due to Alzheimer’s disease; and (3) dementia due to Alzheimer’s disease (Albert et al., 2011; McKhann et al., 2011; Sperling et al., 2011). Clinical symptoms are absent in the preclinical stage, but brain pathology may be present. MCI of the Alzheimer’s type involves memory disruption and difficulty in thinking. The progression of dementia due to Alzheimer’s disease ranges from mild to moderate to severe (Albert et al., 2011; McKhann et al., 2011; Sperling et al., 2011). In the mild stage of dementia, individuals suffer from impaired memory and sensory processing but can engage in normal activities with some assistance. Moderate Alzheimer’s dementia includes continued cognitive decline, impaired short- and long-term memory, loss of ability to communicate effectively and complete daily tasks. Individuals with severe dementia show worsening cognitive deficits with pronounced physical decline that includes loss of motor function and inability to eat and drink (Alzheimer’s-Association, 2019). Anxiety and fear are common symptoms of neurodegenerative disorders including Alzheimer’s disease (Chung & Cummings, 2000;
