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A proposed solution to the base rate problem in the kappa statistic.
The shaded area represents types of cases in which the probability of a significant psychopathology during childhood rises significantly above the base rate.
The higher base rate of discord in our control sample could make it more difficult to detect an effect.
If there is a true latent taxon present, then valid indicators should produce consistent estimates of the taxon base rate, regardless of the variable pairings.
The association between victimization and these low base rate internalizing behaviors does not appear to be strong.
They argue that because the base rate lacks reference class specificity its use is negated in these problems.
One of the most widely discussed factors is the base rate, or the frequency with which a disorder presents at a particular setting.
The table relies on published estimates of the base rate from different settings, to offer clinically relevant standards of comparison.
Note that, in theory, the same could be done for the base rate task.
That is, some emphasize the base rate, some emphasize current information, and some appear not to understand the problem.
Consider, specifically, the base rate studies applied to judgments of one's marital prospects, where the divorce rates are to serve as base rates.
The significant subject effect indicates that children vary considerably in their base rate frequency of private speech usage.
Table 3 provides examples of how test performance can vary depending upon the base rate.
The positive predictive power, or true positive rate of a test, can be calculated from the specificity, sensitivity, and base rate.
However, such microlevel analyses are not possible when examining a behavior that has a relatively low base rate.
