differential selection

differential selection

[‚dif·ə′ren·chəl si′lek·shən]
(statistics)
A biased selection of a conditioned sample.
References in periodicals archive ?
We do not use any of these data in this article, because the sample size is too small for meaningful distributional analysis (to observe whether the differential selection drew in different people, which then would lead to different analytical results for the Phase 2 games themselves).
And although differential selection is operative in each case, the selectivity at issue will vary.
In contrast to the earlier results, however, correcting for differential selection into full-time work reduces the penalties for gay men and eliminates the entire wage premium for lesbians--actually revealing a sizeable but insignificant penalty for married lesbians.
To minimize any implementation threat to internal validity resulting from differential selection of instructors (Onwuegbuzie, 2003), the same instructor taught all sections of the research methodology course.
The same instructor taught all sections of the research methodology course, thereby minimizing any implementation threat to internal validity resulting from differential selection of instructors (Onwuegbuzie, 2003).
Sweeney and Danneberger (1995) favored the explanation that fairway clones had diverged becaue of differential selection pressures.
Next, following Card (1996) and Hirsch and Schumacher (1998), I estimate separate level and change models for low-, medium-, and high-skilled workers to test for differential selection bias over the observed skill distribution.
Furthermore, at least some species seem to respond to differential selection regimes through phenotypic plasticity rather than by genetic differentiation in phenotypic traits (Appleton and Palmer 1988; Palmer 1990; Gibbs 1993).
Use ecological observations and experiments to identify (1) pairs or groups of species that have the potential to exert reciprocal effects on fitness, (2) the potential sources of differential selection on the interaction among communities, and (3) the conditions favoring coevolution.
Such systematic differences in behavior may also serve as the basis for differential selection in the context of an ecological process.
conclude that SSD will evolve most rapidly when differential selection pressures and variance dimorphism favoring the same direction of response are found.

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