Developmental Research
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This document discusses three methods of developmental research: longitudinal, cross-sectional, and cross-sequential studies. Longitudinal studies involve repeated observations of the same items over long periods of time. Cross-sectional studies observe groups at different ages at the same time. Cross-sequential studies combine longitudinal and cross-sectional methods by comparing two separate longitudinal studies covering different time periods. The document outlines advantages and disadvantages of longitudinal and cross-sectional studies, as well as definitions and examples of these research methods.
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Developmental Research
- 2. Methods of developmental research: Longitudinal Cross sectional Cross sequential
- 3. Definition: a correlational research study that involves repeated observations of the same items over long periods of time Usage: 1) in psychology 2) in medicine
- 4. Advantages: Disadvantages: 1) The length of time it takes to complete the study 2) The lack of control, randomization, and standardization 3) Less power to detect causal relationships than do experiments More power than cross-sectional studies by virtue of: 1) Excluding time-invariant unobserved individual differences 2) Observing the temporal order of events
- 5. Some types of longitudinal studies: 1) Panel studies 2) Cohort studies 3) Record linkage studies 4) Retrospective studies
- 6. Cross Sectional Study: Definition: Cross sectional study forms a class of research methods that involves observation of some subset of a population of items all at the same time, in which, groups can be compared at different ages with respect of independent variables. Usage: in most branches of science such as social sciences
- 7. Advantages: simple and quick to perform Disadvantages: the assumptions can be invalid due to the differences between the age ranges
- 8. Difference between cross-sectional and longitudinal study Cross-sectional studies take place at a single point in time Longitudinal study involves a series of measurements taking over a period of time
- 9. Definition: Cross sequential is a comparison of two separate but equivalent longitudinal studies, each covering a different period of time It combines both longitudinal and cross sectional methods in an attempt to both shorten the length of the research and minimize developmental assumptions
- 10. Thanks for your attention