This study broaches in a novel way the analysis of cognitive impairment characteristic of the early stages of Alzheimer's Disease (AD). Specifically, we attempt to determine the acoustic speech parameters that are sensitive to the onset of the disease, and their association with the language deficit characteristic of AD. Speech analysis was carried out on 21 elderly patients with AD using Praat software, which analyzes the acoustic components of speech. The data obtained were subjected to stepwise regression, using the overall scores obtained in the test as the criterion variable, and the scores on the frequency, amplitude and periodicity variables as predictors of performance. We found that the percentage of voiceless segments explains a significant portion of the variance in the overall scores obtained in the neuropsychological test. This component seems to be related mainly to the patient's ability in phonological fluency. This finding could permit the creation of a diagnostic test for AD through analysis of the acoustic speech parameters at very low cost in terms of both time and resources.

Objective: To determine the effectiveness of a 13-week individual reminiscence therapy (RT) intervention on cognition, memory, executive function, mood, and quality of life of people with Alzheimer’s disease and vascular dementia. Method: Non-protocolized analysis using data from a larger multicenter, single-blind, randomized, parallel two-arm RCT of RT for people with neurocognitive disorders. A sample of 148 people with probable Alzheimer’s disease or vascular dementia attending 23 Portuguese institutions providing care and support services for older adults were selected. Intervention group (n = 74) received 26 individual RT sessions, twice a week for 13 weeks. Control group (n = 74) maintained their treatment as usual. Outcomes were global cognitive function (MMSE), memory (MAT), executive function (FAB), mood (GDS-15), and self-reported quality of life (QoL-AD). All participants were assessed at baseline (T0) and 15 weeks later (T1). Results: The results showed a significant effect of the intervention on global cognition (Group X Time interaction F(1, 128) = 10.542, p = .001, η_p ² = .076), memory (F(1,128) = 9.881, p = .002, η_p ² = .072), and quality of life (F(1,128) = 0.181, p = .671, η_p ² = .001), with medium effect sizes. A small effect on executive function (F(1,127) = 11.118, p = .001, η_p ² = .080) was also found. No effects were found on depressive symptoms (F(1,128) = 0.181, p = .671, η_p ² = .001). Conclusion: Individual RT may have beneficial effects on cognition and quality of life of people with Alzheimer’s disease or vascular dementia.

Cognitive stimulation is a recommended therapy with positive effects on the cognitive performance of older adults with neurocognitive disorders. However, there are few one-on-one, long-term interventions applied by professionals. The aim of the present study was to determine the effectiveness of 47-week individual cognitive stimulation (iCS) interventions on cognition, mood, instrumental activities of daily living, and quality of life in older adults, with neurocognitive disorders using a single-blind, randomized, parallel two-arm RCT. A sample of 59 older adults with neurocognitive disorders (predominantly Alzheimer’s disease), who were non-institutionalized but socially vulnerable, was selected. The intervention group (n = 30) received 47 iCS weekly sessions. The control group (n = 29) maintained their baseline treatments. Outcomes were global cognitive function, cognitive impairment, mood, instrumental activities of daily living, and self-reported quality of life. All participants were assessed at baseline, 25 weeks, and 50 weeks. The results showed a significant effect of the intervention on MMSE, MoCA, GDS-15. Individual cognitive stimulation may have beneficial effects on the cognitive function and mood of older adults with cognitive impairment.

This study examined the effects of dog-assisted therapy (DAT) on social behaviors, emotional manifestations, and experience during the activity of 3 people with dementia residing in a specialized dementia unit. The study used an A-B-A-B withdrawal single-case experimental design with two 5-session phases, baseline and DAT, replicating the same activities in each phase. The sessions were recorded and 2 independent coders quantified the frequency of social behaviors along with an assessment of the emotional manifestations and experience during the activity. Comparing with baseline sessions, DAT sessions showed an increase in prosocial behaviors (leans, looks, and verbalizations) and a significant impact on emotional manifestations with heightened pleasure. Dog-assisted therapy sessions also led to a better experience, with higher participation, pleasure, and relationship with others, together with lower rejection and displeasure than in the baseline sessions. Dog-assisted therapy seems to be a nonpharmacological therapy with potential to improve quality of life of people with dementia through promoting social behaviors and positive emotional manifestations.

Objective: This study seeks to assess the impact of a pottery workshop as a creative arts programme and discover the extent to which people with dementia taking part in an artistic and creative activity engage with it, experience a feeling of well-being, and improve their mood state. In addition, the study will seek to answer the question of whether taking part in a programme of creative activities improves the self-esteem of people with dementia. Method: The research used an uncontrolled, repeated measures design. Thirty users of the National Reference Centre for Alzheimer’s and Dementia care in Salamanca (Spain) in a moderate to advanced stage of dementia (Global Deterioration Scale 4, 5, or 6) were divided into five intervention groups that received ten 45-minute sessions in which they were helped by facilitators to make different ceramic pieces. The participants were assessed before and after the intervention with a self-esteem scale, and they rated their mood before and after the sessions on a graphic scale. During the art sessions, two observers recorded the presence of multiple indicators of well-being. Results: The intervention was found to have a significant impact on mood and self-esteem that was independent of the participants’ Global Deterioration Scale. Regarding the tool used to observe well-being, the participants scored highly in the domains of sustained attention, pleasure, self-esteem, and normalcy, with low scores in negative affect and sadness. Conclusions: Pottery may be a highly suitable activity for people with dementia, as they may enjoy both the activity and the creative process, with it triggering a positive mood during the sessions, providing psychological well-being and reinforcing their self-esteem.