In other words, DNA methylation turns genes off. Although the exact purpose of methylation is unknown, it's vital to embryonic development, genomic imprinting, chromosome stability, and more. One study sought to discover whether DNA methylation is an accurate way of predicting age by gathering 8, samples of 51 different tissues and cells.
Some didn't. The study found that certain parts of the body age faster than others. For example, breast tissue is some of the oldest tissue in the body.
The research found that even healthy breast tissue can be as much as three years older than the rest of a woman's body. If healthy breast tissue exists near cancerous tissue, it's an average of 12 years older.
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Shammas MA. Telomeres, lifestyle, cancer, and aging. Telomeres in neurological disorders. Adv Clin Chem. Physical activity and telomere length: Impact of aging and potential mechanisms of action. Horvath S. DNA methylation age of human tissues and cell types. Genome Biol. Castillo, S. These results indicate that the four dimensions of our cognitive age variable are capturing aspects of age that are not adequately reflected in an individual's chronological age.
Moreover, the analysis reveals the importance of examining each of the four cognitive age dimensions, for the composite measure that combines the dimensions is likely to mask some of the differences reflected by each of dimensions. Still further, the four age dimensions related to each other and to chronological age in a manner quite similar to patterns found by Kastenbaum and his associates It is our feeling that the cognitive age variable, as well as other nonchronological age measures, will enrich the process of studying the impact of age on consumer behavior and vice versa.
Also, it is likely that nonchronological age variables will provide information not generally possible when chronological age is related to consumer behavior. The present results also provide additional support for the increasingly popular view that the elderly should not be viewed as if they are a single group or market segment, with uniform attitudes and behavior.
For instance, a consumer who is in her sixties might perceive of herself as being in her forties and identify with role models of that age. In such a case, the possibility exists that she really belongs to a different target market than indicated by her chronological age; that is, if she perceives herself to be younger, she actually might belong to a younger target market, even though her chronological age is older.
It would seem desirable that research be undertaken to examine the relationship between cognitive age and chronological age and a cross-section of different product categories some likely to be age sensitive and some not to see if the product category makes a difference in terms of age-related appeals and age-related role models. Of course, the cognitive age variable should be employed in studies that do not solely focus on the elderly; that is, it should be used in studies that concentrate on other age groups, as well as a cross-section of age groups.
For example, this research could include investigations of age perception among teenagers as compared to the elderly. Teenagers might like to perceive of themselves as being older than their chronological age, while the elderly perceive of themselves as being younger than their chronological age.
As a final suggestion, the cognitive age measure should lend itself to cross-cultural consumer behavior studies. Specifically, studies that explore the scope and nature of cultural differences in the perception of age, and how these differences influence various aspects of consumer behavior. It would also be desirable to assess the effect of subcultural and situational factors on the response to the cognitive age measure.
Most people seem to have other 'ages' besides their official or 'date of birth' age. The questions which follow have been developed to find out about your 'unofficial' age. Please specify which age group you FEEL you really belong to: twenties, thirties, forties, fifties, sixties, seventies, or eighties. Bengston, Vern L. Binstock and Ethel Shanas, Eds. Bitten and K. Warner Schaie, eds. Birren, James E. Birren and K. Blau, Zena S.
Bromley, Dennis B. Hendricks, C. Gubrium, ed. Jarvik, Lissy F. Lawrence, J. Neugarten, Bernice L. Peters, G. Roscoe, Jr. Marvin, LeClaire, Jr. How did Alfred Binet determine mental ages? What do you mean by mental age? How do you calculate IQ? What is IQ and how is it calculated?
Is my 2 year old advanced? How many words should a child say at 2? Abstract : The current study examines the concept of self-perceived age in the Middle Eastern market through the use of the cognitive age construct.
The results of a survey of respondents in the Kuwait market reveal that the five-item cognitive age measure scored 0. The results also indicate that the differences between chronological age and cognitive age vary across lifecycle age groups.
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