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• Longitudinal_study abstract "A longitudinal study is a correlational research study that involves repeated observations of the same variables over long periods of time — often many decades. It is a type of observational study. Longitudinal studies are often used in psychology to study developmental trends across the life span, and in sociology to study life events throughout lifetimes or generations. The reason for this is that unlike cross-sectional studies, in which different individuals with same characteristics are compared, longitudinal studies track the same people, and therefore the differences observed in those people are less likely to be the result of cultural differences across generations. Because of this benefit, longitudinal studies make observing changes more accurate, and they are applied in various other fields. In medicine, the design is used to uncover predictors of certain diseases. In advertising, the design is used to identify the changes that advertising has produced in the attitudes and behaviors of those within the target audience who have seen the advertising campaign.Because most longitudinal studies are observational, in the sense that they observe the state of the world without manipulating it, it has been argued that they may have less power to detect causal relationships than do experiments. But because of the repeated observation at the individual level, they have more power than cross-sectional observational studies, by virtue of being able to exclude time-invariant unobserved individual differences, and by virtue of observing the temporal order of events. Some of the disadvantages of longitudinal study include the fact that it takes a lot of time and is very expensive. Therefore, it is not very convenient.Longitudinal studies allow social scientists to distinguish short from long-term phenomena, such as poverty. If the poverty rate is 10% at a point in time, this may mean that 10% of the population are always poor, or that the whole population experiences poverty for 10% of the time. It is impossible to conclude which of these possibilities is the case using one-off cross-sectional studies.Types of longitudinal studies include cohort studies and panel studies. Cohort studies sample a cohort, defined as a group experiencing some event (typically birth) in a selected time period, and studying them at intervals through time. Panel studies sample a cross-section, and survey it at (usually regular) intervals.A retrospective study is a longitudinal study that looks back in time. For instance, a researcher may look up the medical records of previous years to look for a trend.".
• Longitudinal_study wikiPageExternalLink midus.wisc.edu.
• Longitudinal_study wikiPageExternalLink growingup.
• Longitudinal_study wikiPageExternalLink www.busseltonhealthstudy.com.
• Longitudinal_study wikiPageExternalLink project_detail.php?id=15.
• Longitudinal_study wikiPageExternalLink www.cls.ioe.ac.uk.
• Longitudinal_study wikiPageExternalLink www.clsa-elcv.ca.
• Longitudinal_study wikiPageExternalLink introduction.asp.
• Longitudinal_study wikiPageExternalLink www.psbh.be.
• Longitudinal_study wikiPageExternalLink wlsresearch.
• Longitudinal_study wikiPageExternalLink www.themegacitiesproject.org.
• Longitudinal_study wikiPageExternalLink index.html.
• Longitudinal_study wikiPageID "1557623".
• Longitudinal_study wikiPageRevisionID "604789550".
• Longitudinal_study hasPhotoCollection Longitudinal_study.
• Longitudinal_study subject Category:Cohort_study_methods.
• Longitudinal_study subject Category:Design_of_experiments.
• Longitudinal_study subject Category:Epidemiology.
• Longitudinal_study subject Category:Nursing_research.
• Longitudinal_study subject Category:Research_methods.
• Longitudinal_study subject Category:Statistical_data_types.
• Longitudinal_study type Ability105616246.
• Longitudinal_study type Abstraction100002137.
• Longitudinal_study type Cognition100023271.
• Longitudinal_study type CohortStudyMethods.
• Longitudinal_study type Know-how105616786.
• Longitudinal_study type Method105660268.
• Longitudinal_study type PsychologicalFeature100023100.
• Longitudinal_study type ResearchMethods.
• Longitudinal_study type Genre.
• Longitudinal_study type MusicGenre.
• Longitudinal_study type TopicalConcept.
• Longitudinal_study type Concept.
• Longitudinal_study comment "A longitudinal study is a correlational research study that involves repeated observations of the same variables over long periods of time — often many decades. It is a type of observational study. Longitudinal studies are often used in psychology to study developmental trends across the life span, and in sociology to study life events throughout lifetimes or generations.".
• Longitudinal_study label "Estudio longitudinal".
• Longitudinal_study label "Estudo longitudinal".
• Longitudinal_study label "Longitudinal study".
• Longitudinal_study label "Längsschnittstudie".
• Longitudinal_study label "Strategia porównań podłużnych".
• Longitudinal_study label "Лонгитюдное исследование".
• Longitudinal_study sameAs Längsschnittstudie.
• Longitudinal_study sameAs Estudio_longitudinal.
• Longitudinal_study sameAs Luzetarako_datuak.
• Longitudinal_study sameAs Penelitian_longitudinal.
• Longitudinal_study sameAs Strategia_porównań_podłużnych.
• Longitudinal_study sameAs Estudo_longitudinal.
• Longitudinal_study sameAs m.05b5xs.
• Longitudinal_study sameAs Q1758614.
• Longitudinal_study sameAs Q1758614.
• Longitudinal_study sameAs Longitudinal_study.
• Longitudinal_study wasDerivedFrom Longitudinal_study?oldid=604789550.
• Longitudinal_study isPrimaryTopicOf Longitudinal_study.