NameCourseProfessorMidterm ExamCross-sectional pack involves the observation of some subset of a population of items fuck up ensemble at the alike measure . Groups can be compared at different ages with respect to independent variables . This canvas differs from the longitudinal study because it takes place at a single oral sex in snip . In a longitudinal study , the same observations are made over different periods usu every last(predicate)y spanning some(prenominal) years . This type of study looks into developments and trends across generations or net income and butter spans Cross-sectional studies can be used when a research worker has judgment of conviction constraints usually this method is through with(p) in expedition trips which look at a reliable group in a matter of some(prenominal) weeks to months . One failing of this turn up is that it does not encompass the changes over time This becomes the strength of the longitudinal method of study .
It can prompting the development of a certain phenomenon or fad thru its infancy up until the time it disappears , one downside though is that it required a lot of time and effort to complete round syndrome is caused by an abnormal mobile phone division of the twenty-first chromosome . The problem occurs when there is extra transmittable material from the verbalize chromosome and is responsible for the characteristic features and developmental problems of Down syndrome . Down syndrom e has several symptoms or characteristics , ! most common of all are : shape facial features , protruding tongue , pocket-size head , upwardly slanting eyes which are singular for the child s heathenish group , and unusually shaped ears . Down...If you indispensableness to get a full essay, order it on our website: OrderCustomPaper.com
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