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The role of retrospective memory in prospective memory is suggested to be minimal, and takes the form of the information required to make plans. According to Einstein & McDaniel (1990) the retrospective memory component of the prospective remembering task refers to the ability to retain the basic information about action and context.
The Prospective and Retrospective Memory Questionnaire (PRMQ) was developed by Smith et al. (2000) [37] to measure self-reports of prospective and retrospective memory in patients with Alzheimer's disease. It is a questionnaire consisting of 16 items; in which participants rank how often memory failure occurs using a 5-point scale (Very Often ...
Alternatively, one could group subjects based on their body mass index (BMI) and compare their risk of developing heart disease or cancer. Prospective cohort studies are typically ranked higher in the hierarchy of evidence than retrospective cohort studies [3] and can be more expensive than a case–control study. [4]
Both the relative risk and odds ratio are relevant in retrospective cohort studies, but only the odds ratio can be used in case-control studies. Although most case-control studies are retrospective, they can also be prospective when the researcher still enrolls participants based on the occurrence of a disease as new cases occur. [citation needed]
Prospective studies usually have fewer potential sources of bias and confounding than retrospective studies. [7] A retrospective study, on the other hand, looks backwards and examines exposures to suspected risk or protection factors in relation to an outcome that is established at the start of the study.
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A "prospective cohort" defines the groups before the study is done, while historical studies, which are sometimes referred to as "retrospective cohort", define the grouping after the data is collected. Examples of a retrospective cohort are Long-Term Mortality after Gastric Bypass Surgery [13] and The Lothian Birth Cohort Studies. [14]
In economics and business decision-making, a sunk cost (also known as retrospective cost) is a cost that has already been incurred and cannot be recovered. [ 1 ] [ 2 ] Sunk costs are contrasted with prospective costs , which are future costs that may be avoided if action is taken. [ 3 ]