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In psychiatry, an informant is someone who can report on a case without causing observer effects. [1] For example, informants may be family members or friends of a psychiatric patient. Informants are particularly important when the patient's lucidity is questionable; for example, in cases of dementia , or when the patient is a child.
Informant may also refer to: Informant (linguistics), a native speaker who provides information about their language for linguistics study; Informant (psychiatry), a third party who can report on a psychiatric case for a doctor; Informant (statistics), the gradient of the log-likelihood function, also known as the score (function).
An informant or consultant in linguistics is a native speaker or member of a community who acts as a linguistic reference for a language or speech community being studied. The informant's role is that of a senior interpreter, who demonstrates native pronunciation, provides grammaticality judgments regarding linguistic well-formedness, and may also explain cultural references and other ...
As Allport put it, “a differentiated category is the opposite of a stereotype.” [3] Thus, the more a person learns about a minority category of people, the more differentiated that category is and the more resistant it is to being reduced to a negative stereotype. The Contact Hypothesis has been supported by decades of research.
A representative from the U.S. State Department congratulates and offers a partial payment to a fully disguised informant whose information led to the neutralization of a terrorist in the Philippines Two-page totally confidential, direct and immediate letter from the Iranian Minister of Finance to the Minister of Foreign Affairs (Hossein Fatemi) about creating a foreign information network for ...
[f] For example, a review article that analyzes research papers in a field is a secondary source for the research. [g] Whether a source is primary or secondary depends on context. A book by a military historian about the Second World War might be a secondary source about the war, but where it includes details of the author's own war experiences ...
The Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE) is a questionnaire that can be filled out by a relative or other supporter of an older person to determine whether that person has declined in cognitive functioning. The IQCODE is used as a screening test for dementia. If the person is found to have significant cognitive ...
Open-source intelligence (OSINT) are gathered from open sources. OSINT can be further segmented by the source type: Internet/General, Scientific/Technical, and various HUMINT specialties, e.g. trade shows, association meetings, and interviews.