Teenage Depression > Personal Values > Personal Multi-screening Inventory > Psychometric Characteristics
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Psychometric CharacteristicsPsychometric Characteristics
In developing the PMSI scales, it was recognized that any measurement tool that is used to characterize human strengths and problems or to make decisions about themselves must have at least two major characteristics: it must be both reliable, and it must be valid.
However, if a scale is to be used repeatedly with the same client to monitor and evaluate the client's strengths and problems, it must have a number of other desirable characteristics (Hudson, 1982): it must be short; it must be easy to administer; it must be easy to score; it must be easy to understand and interpret; and it must not suffer response decay when used repeatedly over many occasions. The validation study for the PMSI subscales was done on a total sample of 510 respondents, with 159 of these respondents being part of clinical groups who were currently under treatment at the time, for addiction problems and the balance of the sample were supposedly optimal functioning individual. Each of the PMSI subscales meets all of the coefficient Alpha and Standard error measurement standards. Each construct has a high reliability and a low standard error of measurement sores, and they all have good content, criteria, and construct validity. Later chapters of this manual describe each of the PMSI subscales and identifies the currently available psycho social characteristics. Research is currently under way to obtain additional psychometric data for the PMSI and readers should feel free to contact the publisher to obtain updated information and references to that work when it is completed. Registered users of the PMSI will be notified of major updates to this manual and the availability of additional information. |