Hi debbie,
The following coefficients are from the publication "Testing and Assessment: an Employer's Guide to Good Practices", Employment and Training Administration, U.S. Department of Labor, 1999,
Reliability coefficients 0.90 and above, excellent 0.80 - 0.89 good 0.70 - 0.79 adequate 0.69 or less, may have limited applicability.
Validity coefficient value interpretation 0.35 and above, very beneficial 0.21 - 0.35 likely to be useful 0.11 - 0.20 depends on circumstances 0.10 or below, unlikely to be useful
Does this help? Psychometric Tests are best used for development puropse. If you want to use them for recruitment then it is better to use the same in conjuction with interview or other data. Regarding Psychometric Instruments...will try to answer your questions...
1) Can these tests be used for recruitment and selection purposes?
Well, According to me, Psychometrc Tests are best used for Development purpose, but if you want to use the same for Recruitment or selection then these instruments are best used as an additional tool to a battery of processes. Maybe, a support for the interview etc.
2) At what all levels ranging from technical executives and middle management to senior management ?
All levels but interpreted accordingly....for that level or future.. lieu
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