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How we change what others think, feel, believe and do
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How we change what others think, feel, believe and do |
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Time studies
Explanations > Social Research > Design > Time studies
There are two types of study which take time into account. Longitudinal studyA longitudinal study takes place over a period of time, repeatedly examining the same population or situation to determine how it changes over time. Repeated measuresA repeated measures study typically makes relatively few sets of measurement. This may give reason for a relatively complex or expensive measurement that would be more problematic if repeated more often. Repeated measures may be analyzed with a repeated measures ANOVA. Time seriesA time series study makes many measures over time, possibly in separate surveys. Due to the overall quantity of measurement it is usually easier to keep measures simple in a time series, otherwise it can become difficult to undertake. A trend study selects different samples over time and seeks differences to identify overall population shifts. A panel study selects a single group and gets them to comment about something at different points in time, often done as a discussion. A cohort study selects different samples from the same age group and studies their maturation over time. An approximate longitudinal study compares people of different ages at a single point in time, for example understanding generational differences. Cross-sectional studyA cross-sectional study takes place at a single point in time, typically sampling a population. The study may be complex, time-bound or both. If this study proves interesting, it may be done again later, extending it into a repeated-measures longitudinal study.
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