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Design Studies Essay

  • Submitted by: cowgirlvanna05
  • on February 21, 2013
  • Category: Psychology
  • Length: 418 words

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Below is an essay on "Design Studies" from Anti Essays, your source for research papers, essays, and term paper examples.

In Cross-Sectional Study, People of ages 5 and 25 are assessed on one occasion. Cross-sectional design used for research that collects data on relevant variables one time only from a variety of people, subjects, or phenomena. However, it provides a snapshot of the variables included in the study, at one particular point in time. Advantages of   Cross Sectional Studies show similarities and differences among age groups; speedy economical, no problem of attrition or repeated testing, data from a large number of subjects, data on attitudes and behavior, data useful to many different researchers, generates hypotheses for future research.   Cross-sectional study disadvantages includes masks individual differences, can be confounded by cohort effects, Increased chances of error, increased cost with more subjects, increased cost with each location, cannot measure change, cannot establish cause and effect, no control of independent variable, difficult to rule out rival hypotheses, static, time bound.

Longitudinal Design Study collects data over long periods of time. Measurements are taken on each variable over two or more distinct time periods. This allows the researcher to measure change in variables over time. Longitudinal Design study helps researches study the influences between 5 and 25 by studying the same person or group of people more than once, sometimes years apart. They may measure a single characteristic, intelligence, height, or aggressiveness, or they may look at several aspects of development to find relationships among them at their certain age.   Advantages of Longitudinal Studies reveals individual level changes, establishes time order of variables, and can show how relationships emerge. Thus, the longitudinal studies are difficult to show more than one variable at a time, assumes present trends will continue unchanged, needs of qualitative research to explain fluctuations. Furthermore, longitudinal studies generally are repeated testing, where...

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