An investigation in which information is systematically collected but in which the experimental method is not used. A population survey may be conducted by face-to-face inquiry, by self-completed questionnaires, by telephone, by postal service, or in some other way. Each method has its advantages and disadvantages. The ability to generalize from the results depends upon the extent to which those surveyed are representative of the entire population.
Activities with aspects of cognitive and social functioning, including shopping, cooking, doing housework, managing money and using the telephone. See also “activities of daily living (ADLs)”.... instrumental activities of daily living (iadl)
a rolling survey carried out annually (1971–2007) in Great Britain by the *Office for National Statistics. It included questions about the household and questions to be completed by all individuals aged over 16 within the household. It covered a wide variety of topics, such as health, employment, pensions, education, and income. It was succeeded (2007–12) by the general lifestyle survey. See also census.... general household survey
a device, resembling a small hearing aid, that produces sounds of many frequencies at equal intensities and is used in the treatment of tinnitus. Also known as a broad-band sound generator, ear-level sound generator, noiser, or wide-band sound generator, it was formerly known as a tinnitus masker.... white noise instrument
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