Longitudinal Cross Sectional

A longitudinal study like a cross sectional one is observational.

Longitudinal cross sectional. Cross sectional longitudinal sequential designs. Advantages disadvantages 6 02 go to research methods and the study of adult development and aging ch 4. Longitudinal study and cross sectional study are two such examples.

In muscle physiology physiological cross sectional area pcsa is the area of the cross section of a muscle perpendicular to its fibers generally at its largest point. There are no alteration or changes in the environment in which the participants exist. Longitudinal and cross sectional study are two types of research studies between which a key difference can be identified.

While cross sectional studies collect data from many subjects at a single point in time longitudinal studies collect data repeatedly from the same subjects over time often focusing on a smaller group of individuals that are connected by a common trait. Despite this marked similarity there are distinctive differences between both these forms of study. The researcher who decides to conduct research on a particular subject can use many research designs.

Both types of study can prove useful in research. Cross sectional and longitudinal approaches are both essential for studying human development. So once again researchers do not interfere with their subjects.

If investigators want to discover whether intelligence test scores change with age or remain stable they need to observe the same children at different times. While longitudinal studies repeatedly observe the same participants over a period of time cross sectional studies examine different samples or a cross section of the population at one point in time. However in a longitudinal study researchers conduct several observations of the same subjects over a period of time sometimes lasting many years.

The main difference between longitudinal and cross sectional study is that longitudinal studies look at variables repeatedly over a period of time while cross sectional studies look at variables at a particular point in time. It is typically used to describe the contraction properties of pennate muscles. For some questions a longitudinal approach is necessary despite the time and cost involved.