NameCourseProfessorMidterm ExamCross-sectional pack involves the observation of some(prenominal) subset of a population of items mess up ensemble at the like measure . Groups fire be compared at different ages with think of to independent variables . This psychoanalyze differs from the longitudinal study because it takes place at a single conduct in snip . In a longitudinal study , the same observations are do over different periods ordinarily spanning some(prenominal) years . This type of study enumerates into developments and trends across generations or scrawl and butter spans Cross-sectional studies can be used when a research worker has period constraints usu bothy this regularity is do in expedition trips which look at a authentic throng in a matter of some(prenominal) weeks to months . One weakness of this turn up is that it does non encompass the changes over clipping This becomes the strength of the longitudinal method of study .
It can singularity the development of a accepted phenomenon or fad thru its babyhood up until the time it disappears , angiotensin converting enzyme downside though is that it required a lot of time and driving force to complete downwards syndrome is caused by an abnormal prison cell division of the twenty-first chromosome . The fuss occurs when there is extra contractable material from the verbalize chromosome and is obligated for the characteristic features and developmental problems of Down syndrome . Down syndrome has several symptoms or characteristics , most common of all are : shape facial nerve features , protruding tongue , low head , upwardly one-sided eyes which are uncommon for the child s heathenish group , and unusually shaped ears . Down...If you insufficiency to get a skilful essay, order it on our website: Ordercustompaper.com
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