reliability

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A short history of testing

February 18, 2008 in testing | No comments

It is useful to view testing from a historical perspective for two reasons:

  • It enables us to relate current developments in the field to what has preceded them.
  • Methods of testing rarely die out, but are more often than not adapted or continue to exist in modified forms in different parts of the world. Although various stages or periods in the development of testing can be identified, many of the testing techniques associated with these periods remain in use today.

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    Practical Considerations: Reliability, Validity, and Efficiency

    February 18, 2008 in testing | No comments

    These are crucial aspects of testing. There is perhaps a constant dynamic tension and balance between validity and reliability. Validity is perhaps the central quality. Reliability is a necessary but not sufficient condition for validity: valid tests are necessarily reliable, but reliable tests are not necessarily valid.

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