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On 1st June 1932, as part of the Scottish Mental Survey, 87,498 Scottish schoolchildren born in 1921 sat the same test of mental ability: the Moray House Test. In 1997, the Universities of Aberdeen and Edinburgh began to search for men and women still living in Scotland who took part in these tests.
On 1st June 1998, about 80 individuals gathered in the Aberdeen Music Hall to re-sit the test exactly 66 years later. Participants were followed-up 5 times over a 10 year period.

Aberdeen University has followed all of the children born in Aberdeen in 1921, 1936 (see Aberdeen Birth Cohort 1936) and 1950-1956 (see Aberdeen Children of the 1950s) as they grow and age.
Collectively these groups are known as the ABERDEEN BIRTH COHORTS, and have helped to advance our understanding of aging well.

Over the years, researchers have linked the results from these tests to health and social information.
The linked data has been used to answer questions like:
Does being born very small affect mental health later in life?
Is the risk of dementia related to childhood intelligence?
What influences quality of life in old-age?
Participants born in 1921 and 1936 have been invited back for a wide variety of studies at the University. Similar research is being started for the Children of the 1950’s group.

On 4th June 1947, as part of the Scottish Mental Survey, every Scottish schoolchild born in 1936 sat the same test of mental ability: the Moray House Test. In 1997, Professor Lawrence Whalley discovered the Scottish Mental Survey test records at the Scottish Council for Research in Education in Edinburgh and began to trace people who had sat the test in Aberdeen.

The British Women’s Heart and Health Study is a prospective cohort study of heart disease in over 4000 British women between the ages of 60 and 79. It is funded by the British Heart Foundation. The Study aims to provide information about existing patterns of treatment of heart disease, and further the understanding of risk factors and disease prevention. We collected our baseline data in 1999-2001, and have been tracking the cohort since. Participants have been re-contacted through questionnaires or assessment in 2003, 2007 & 2010.

This is a feasibility study which has a Longitudinal Cohort design, following up participants at selected time points over a 1 year duration. The study will recruit 2 distinct groups: (1) patients with symptoms of cognitive impairment, and (2) study partners who are cognitively normal. The patients recruited to group 1 will have been recently referred to a Memory Assessment Service by their GP with suspected Mild Cognitive Impairment (MCI) & mild dementia. All patients referred to a Memory Assessment Service for this reason will be potentially eligible for inclusion in the study. Close friends or family members involved in looking after the cognitively impaired participants will also be asked to participate as study partners to attempt to measure the impact that looking after a partner, friend or family member with memory problems can have on a carers Quality of Life and other variables such as financial burden. Both cognitively impaired participants and their study partners will be given the option of additionally participating in two sub-studies:

Mobile data collection: Using a web/mobile app to collect self-reported data on a more regular basis from home

Wearable device: Using a wearable device that looks like a watch to collect information on activity and sleep

For the Esprit study, 1863 non-institutionalized persons aged 65 years and over were randomly recruited in 1999 from the Montpellier district electoral rolls, and re-examined 6-times at 2-3 yearly intervals. Objectives:

1) To determine current and lifetime prevalence as well as incidence of psychiatric disorder in the elderly;
2) to determine the risk factors for these disorders, their relative weight and interactions;
3) to study clinical heterogeneity;
4) to estimate the probability of transition towards a subsyndromic state or a given pathology;
5) to elaborate predictive etiological models.

The main objective of the FINGER study is to find out if a multi-domain intervention could prevent cognitive decline among older people. With this intervention we also aim to investigate the effect of the multidomain intervention on disability, quality of life, depressive symptoms, the use of health care services and vascular risk factors.

Participants of the FINGER study have previously taken part in population-based non-intervention studies. They have an increased risk of cognitive decline. At the beginning of the study they are 60-77 years old. The FINGER study enrols approximately 1200 participants in six centers in Finland: Helsinki, Kuopio, Oulu, Seinäjoki, Turku and Vantaa.

ILSE is an interdisciplinary longitudinal study that offers the opportunity to analyze inter- and intra-individual differences and changes over the life-span as well as relations between environmental factors, behavioral aspects, life-events, health behaviors, mental and physical health and well-being. The bio-graphical approach pursued by the ILSE-study is based on the assumption that the quality of developmental experiences in early life-phases influence the performance and possibilities of adaptation in later life in a unique way.

At the first measurement point, the ILSE sample consisted of 1390 persons from East (re-search centres: Leipzig and Rostock) and West Germany (research centres: Heidelberg, Bonn and Erlangen-Nuremberg). Stratified by sex and cohort membership (born 1930-32 and 1950-52, respectively) the representative ILSE-sample was examined by a interdisciplinary research team. The first round of data collection was conducted between 1993 and 1996, the second round with n = 994 participants from the data collection centres Heidelberg, Leipzig und Rostock (return rate = 90%) was conducted between 1997 and 2000. The third round of data collection which started in January 2005 ended in 2007. A fourth wave was conducted and completed between 2014 and 2016

The longitudinal Study of Cognitive Change in Normal Healthy Old Age (LSCC) is a population study including 6,342 healthy residence of Greater Manchester and Newcastle-upon-Tyne aged from 42 to 92 in 1983. Two different batteries of cognitive tests were alternately administered biennially with additional questionnaires and Dna sample collection until 2003. The aims of the study were to:

to determine sources of variations in rates of cognitive change between individuals
to identify factors that slow or accelerate cognitive ageing and that prolong mental productivity or accelerate decline
to generate and test functional models for the processes of biological ageing, especially of ageing of the brain and the central nervous system
to test whether the neurophysiological and consequent cognitive changes differ in idiosyncratic patterns between individuals

The Maastricht Aging Study (MAAS) was designed to specify the usual and pathological aging of cognitive function. MAAS is devoted to the age-related decline of memory and other cognitive functions in normal people and the factors that may be involved in this process. What determines a decline in memory function? Why do some individuals show a greater decline than others? Over the past years, a host of factors, including biological, medical, psychological and social variables, have been proposed to have an impact on adult cognitive development. MAAS tries to study these factors in an integrative way. This can be achieved only by studying large numbers of normal healthy adults of all ages and by monitoring them for several years.

The Vallecas Project is developed in the Research Unit of the Alzheimer’s Center of the Reina Sofía Foundation by researchers of the CIEN Foundation. Its main objective is to determine a probabilistic algorithm for the identification of individuals at risk of dementia type Alzheimer’s disease (AD) in the course of a few years. This algorithm will be based on the combination of sociodemographic, clinical, neurological, neuropsychological, biological (from blood determinations) and neuroimaging (various 3 Tesla magnetic resonance modalities).

The recruitment phase of the Vallecas Project participants was extended from October 2011 to December 2013. Finally, a total of 1,213 volunteers aged between 70 and 85 and of both sexes were initially evaluated. Once included in the study, it is monitored annually for 5 years in order to assess the evolutionary profile of all participants, specifically identifying those who develop cognitive impairment and / or dementia. The cohort is being followed up annually for 4 years after the baseline.