validity

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validity

[və′lid·əd·ē]
(mathematics)
Correctness; especially the degree of closeness by which iterated results approach the correct result.

validity

the extent to which a measure, indicator or method of data collection possesses the quality of being sound or true as far as can be judged. For example, if a psychological measure, such as an intelligence test, is considered to be valid, this means that it is thought to measure what it sets out to measure. If social survey observations are said to have produced valid data, then they are considered to be true reflection of the phenomenon being studied in the population being studied (e.g. projections of voting behaviour), and the survey method could be said to have validity. Compare RELIABILITY.

In practice, in sociology and the social sciences generally, the relation between indicators and measures on the one hand and the underlying concepts they are taken to represent is often contested (see OFFICIAL STATISTICS, MEASUREMENT BY FIAT).

References in periodicals archive ?
The aims of this study were to develop and validate a Spanish version of the FIQ and to provide empirical evidence of its internal and external validity. Exploratory and confirmatory analyses showed that the FIQ-S has a one-factor structure consistent with that of the original questionnaire (Elphinston & Noller, 2011).
Further evidence for the external validity of MTurk samples can be found in research conducted by Paolacci et al.
Tests of external validity were conducted using the Spiritual Transformation Inventory (ST!; Hall, 2003).
All of these factors indicate that both the internal and external validity of the study are compromised.
However, we came across a problem related to what constitutes an internal versus an external validity violation in this excellent source.
We have other questions about the external validity of RATE: Can these findings generalize to actual classrooms?
Even beyond this requirement of "parallelism" is the need for generalizing behavioral observations from the laboratory to the field, or "external validity." Internal validity can be demonstrated through the evaluation of the design.
External validity is the central component of our recommendations:
This factor has four types: conclusion, internal, construct, and external validity. Conclusion validity refers to the appropriate statistical procedures to detect differences and correlations.
Finally, the relationships between psychological need thwarting and burnout were analyzed in order to provide support for the external validity of the revised scale.
Methodological quality considerations include threats to internal validity and external validity (Gall, Gall, & Borg, 2003; Shadish & Myers, 2001), as well as test score reliability and validity (Messick, 1989).

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