Recall bias, a type of information bias, can occur when individuals with particular adverse health events remember or report their previous exposure differently than do individuals who are not affected.
Recall bias can occur due to distinctive responses to interviews or self-reporting, concerning previous exposures or consequences and therefore, is basically a problem for retrospective researches.
This could happen if the condition due to a particular health event affects the ability of an individual to correctly remember previous exposures. This type of bias can prove to be a specific problem in case-control studies.
Therefore, cases with several experiences of major depression as an adult are more expected to recollect and report childhood abuse as compared to controls, who do not have a history of mental disorders.
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