Related Experiment Video
Updated: Mar 26, 2026

Accuracy in Dental Medicine, A New Way to Measure Trueness and Precision
Published on: April 29, 2014
Direction Of Measurement And Profile Similarity
Abstract:
Recently, Tellegen (1965), in his discussion of the influence of direction of measurement on the analysis of test characteristics, pointed out that similar problems can exist in the assessment of profile similarity. This paper reports two empirical analyses which demonstrate that the correlations between personality test profiles are meaningfully affected by decisions concerning direction of measurement. Reflection of scales in a profile can alter the mean (elevation), variance (scatter), and manifest shape of each profile in a way which yields nonpredictable variations in the person correlation matrix. It is shown that these variations may alter estimations of factor structure, cluster composition, indices of discrimination, and retest stability. c.
Related Concept Videos
Profile Leveling and Cross Sections
Design Example: Measuring Distance Between Two Points with Obstructions
Factors Influencing Attraction III: Similarity
The Dot Product
Differential Leveling
Beams with Unsymmetric Loadings
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...

