Standard error of measurement
(SEM) helps to quantify the errors in intelligence tests in order to facilitate the most accurate interpretation and presentation of scores.
To numerically express the accuracy of measurement (reliability) of the used device, we used the typical error of measurement
Statistical analysis was carried out under the guidance of a statistician and involved a number of methods including paired t-tests to determine significant differences between trials for all endpoint data, Pearson's correlations, absolute and relative technical error of measurements
(TEM) (Knapp, 1992), intra-class correlations (ICC)(Vincent, 1995) and limits of agreement (Atkinson and Nevill, 1998; Bland and Altman, 1986), which have been detailed in an earlier publication (Wallman and Campbell, 2007).
The resulting error of measurement
of ~4% in the test is about three-fold more than the ~1-2% usually observed for peak power in incremental tests when there is no pre-load (Hopkins et al.
7 in Lohman and Hagen (2002) shows that the error of measurement
at this score is 14.
Across such verbal ability scales, then, specific error of measurement
is controlled by averaging (or summing) across scales.
Newstead & Dennis argued that the standard error of measurement
is a more useful index of marker (dis)agreement than the reliability coefficient.
Expecting error of measurement
after correction near to 0,01 % of scale, the values [[tau].
Substantial random or systematic error of measurement
The Fourth Circuit responded that, even if the "Flynn Effect" did exist, there was insufficient evidence that the standard error of measurement
, which could lower or raise an IQ test score, actually lowered Walton's IQ score to the requisite degree.
This correlated error of measurement
may be the result of the PIAT protocol which specifies that children who score less than a certain cut off score on Reading Recognition are assigned their Reading Recognition score as their Reading Comprehension score (Center for Human Resource Research, 1993, p.
The standard error of measurement
from these overall reliability estimates was 2.