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The Nun Study of Aging and Alzheimer's Disease is a continuing longitudinal study, begun in 1986, to examine the onset of Alzheimer's disease. [1] [2] David Snowdon, an Epidemiologist and the founding Nun Study investigator, started the Nun Study at the University of Minnesota, later transferring the study to the University of Kentucky in 1990. [3]
The Gesell Developmental Schedule was then able to compare the infant or child's rate of development to a norm that was derived from a previous longitudinal study (see history, above). Accordingly, the scale would purportedly be able to show that infants and young children who demonstrate behaviors or responses more typical of an older ...
A longitudinal study (or longitudinal survey, or panel study) is a research design that involves repeated observations of the same variables (e.g., people) over long periods of time (i.e., uses longitudinal data). It is often a type of observational study, although it can also be structured as longitudinal randomized experiment. [1]
Several longitudinal studies support the conjecture that peer groups significantly affect scholastic achievement, [7] [8] [9] but relatively few studies have examined the effect on tests of cognitive ability. The peer group an individual identifies with can also influence intelligence through the stereotypes associated with that group.
A GWA study of longitudinal cohorts, including the LBC1921 and the LBC1936, found that the APOE E4 allele was associated with deleterious cognitive change. [24] Furthermore, a 2015 meta-analysis of GWA studies in 31 cohorts, including the two Lothian Birth Cohorts, found that the APOE gene as well as SNPs on the APOE / TOMM40 genomic region ...
It is the largest long-term study of brain development and child health in the US. [1] The study collects data on the behavior and brain development of over 11,500 children beginning at age 9-10 and continuing through young adulthood. [2] The study collected data from youth in seven primary domains: physical health, mental health, brain imaging ...
The mini–mental state examination (MMSE) or Folstein test is a 30-point questionnaire that is used extensively in clinical and research settings to measure cognitive impairment. [1] [2] It is commonly used in medicine and allied health to screen for dementia. It is also used to estimate the severity and progression of cognitive impairment and ...
A popular repeated-measures design is the crossover study. A crossover study is a longitudinal study in which subjects receive a sequence of different treatments (or exposures). While crossover studies can be observational studies, many important crossover studies are controlled experiments.