Measurement invariance of a one-factor model of effortful control (EC) was tested for 853 low-income preschoolers (M age = 4.48 years). Using a teacher-report questionnaire and seven behavioral measures, configural invariance (same factor structure across groups), metric invariance (same pattern of factor loadings across groups), and partial scalar invariance (mostly the same intercepts across groups) were established across ethnicity (European Americans, African Americans and Hispanics) and across sex. These results suggest that the latent construct of EC behaved in a similar way across ethnic groups and sex, and that comparisons of mean levels of EC are valid across sex and probably valid across ethnicity, especially when larger numbers of tasks are used. The findings also support the use of diverse behavioral measures as indicators of a single latent EC construct.
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http://dx.doi.org/10.1007/s10862-009-9164-y | DOI Listing |
Alzheimers Dement
December 2024
EQT Life Sciences Partners, Amsterdam, 1071 DV Amsterdam, Netherlands.
Background: Alzheimer's disease (AD) trials report a high screening failure rate (potentially eligible trial candidates who do not meet inclusion/exclusion criteria during screening) due to multiple factors including stringent eligibility criteria. Here, we report the main reasons for screening failure in the 12-week screening phase of the ongoing evoke (NCT04777396) and evoke+ (NCT04777409) trials of semaglutide in early AD.
Method: Key inclusion criteria were age 55-85 years; mild cognitive impairment due to AD (Clinical Dementia Rating [CDR] global score of 0.
Background: Alzheimer's disease (AD) is the most prevalent cause of dementia accounting for an estimated 60% to 80% of cases. Despite advances in the research field, developing truly effective therapies for AD symptoms remains a major challenge. Sweet almond contain nutrients that have the potential of combating age-related brain dysfunction, by improving learning, memory and neurocognitive performance.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Yonsei University, Incheon, Incheon, Korea, Republic of (South).
Background: As amyloid-β (Aβ) aggregates are considered as the biomarkers and key factors in the pathology of Alzheimer's disease, there has been extensive investigation into Aβ-targeting compounds for the development of diagnostics and drug discovery related to the disorder. However, the polymorphic and heterogenous nature of Aβ aggregates impedes the structural understanding of their structure. Consequently it is a major challenge to develop new diagnostic and therapeutic development of AD and to study the mechanism of Aβ-targeting compounds.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Center for Health + Technology, University of Rochester Medical Center, Rochester, NY, USA.
Background: To bolster clinical trial infrastructure, there is a need to develop novel, valid, and reliable patient-reported outcome (PRO) measures capable of tracking clinically-relevant changes in Alzheimer's disease (AD), Mild Cognitive Impairment (MCI) and dementia over time. This research describes the development and validation of the Alzheimer's Disease-Health Index (AD-HI) as a tool to measure how patients feel and function in response to therapeutic intervention.
Method: We previously conducted semi-structured qualitative interviews and a national cross-sectional study with individuals with AD, MCI and dementia to ascertain the most prevalent and impactful symptoms identified by the participants.
Alzheimers Dement
December 2024
University of Virginia, Charlottesville, VA, USA.
Background: Hispanic/Latinx older adults have increased risk of developing Alzheimer's disease, poor access to timely and quality dementia care, as well as limited access to caregiver support and interventions. We addressed these structural barriers at a local level in central Virginia in order to improve disparities in risk, early detection, and care.
Method: Systematic expansion of services was undertaken by establishing a Spanish neuropsychological clinic, providing personalized scheduling services by providers to ensure appropriate follow-up after referral is received, engaging in dementia specific community talks through a broader health system initiative (UVA Latinx Health Initiative), and facilitating dementia care coordination services for caregivers.
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