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Advantages And Disadvantages Of Job Analysis?

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Method Advantages Disadvantages
Observation

* Firsthand information.
* Simple to use.
* Verifies data from other sources.
* Useful for manual and psychomotor tasks.



* Time consuming.
* May bias worker performance.
* Small sample size.
* Requires skilled observer.
* Validity & reliability may be problematic.
* Not useful for jobs consisting of mostly mental tasks.

Interview

* Incumbent describes work.
* Can yield data about cognitive and psychomotor processes difficult to observe.
* Qualitative data can be examined.
* Works well for jobs with long job cycles.



* Requires experienced interviewer and well-designed questions.
* Difficult to combine data from disparate interviews.
* Data gathered is subjective and should be verified.
* May elicit extraneous data.

Critical Incident

* Analysis is based on concrete behavior.



* Scales require some expertise to develop.

Diary

* Collects data as events happen.



* Consistent and continuous entries may be difficult to obtain.
* Data not in standardized format.

Checklist

* Inexpensive.
* Easy to administer.



* May not include all important parts of work.

Questionnaire

* Does not require trained interviewer.
* Relatively less expensive.
* Can reach more workers.
* Data is standardized (structured).



* May be difficult to construct.
* May have low response rate.
* Responses may be incomplete.
* Responses may be difficult to interpret (open-ended).

Technical Conference

* Data from experience is superior to observation.
* Data is comprehensive.
* SME's chosen for expertise and competence.



* SME's may have trouble breaking work into tasks and describing work.
* Time consuming.
* Differences in opinion need to be resolved to consensus.

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