Advantages and disadvantages of observational research
Observations may lack depth and qualitative richness.
Advantages and disadvantages of questionnaires
All these help him a lot to form a hypothesis on them. Examples include monitoring for long-term adverse events that did not appear during the time interval over which the RCT was conducted, or to assess whether the trial findings apply to a different population excluded from the trial due to younger or older age, gender, presence of comorbid conditions, or other factors. The event may take place in the absence of the observer. Whereas the unstructured form of observation is conducted for unspecified categories or collecting every event that occurs. So it can be said that observation done with the help of the eyes acts as a most trustworthy medium for making an observation. Direct study — Observation is a very vital scientific method that helps a lot in the collection of the primary information that is reliable in nature in which direct study of the situation is involved. Observation involves a lot of time as one has to wait for an event to happen to study that particular event. Related Articles:. Very direct method for collecting data or information — best for the study of human behavior. Two persons may judge the same phenomena differently.
One of the major advantages of the recording done by a tape or a video camera is that the chances of going wrong i. As a common method, it is very easily followed and accepted. One person may find something meaningful and useful from a situation but the other may find nothing from it.
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Unstructured - Can give detailed descriptions of behaviours rather than simple category totals which means that they give a more complete picture of the situation. It sometimes reduces the interest of both observer and observed to continue their observation process. Planning — The value of an observation in an operation is only if it is done properly — in a planned manner as, if it is done in a careless sense then the chance of making such an observation again may come or not.
Although scientific controlled observation requires some technical skill of the researcher, still it is easier than other methods. Non participant- If observers are covert, for example hidden behind a one way screen data recording equipment would be used which means that the research could be more accurate.
based on 65 review