differential selection

[‚dif·ə′ren·chəl si′lek·shən]

(statistics)

A biased selection of a conditioned sample.

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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).

Ambiguous solicitation: ambiguous prescription

And although differential selection is operative in each case, the selectivity at issue will vary.

Rescher, Nicholas. Productive Evolution: On Reconciling Evolution with Intelligent Design

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.

Wage penalties and sexual orientation: an update using the general social survey

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.

Effect of self-perception on performance of graduate-level cooperative groups in research methodology courses

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).

Role of anxiety on graduate cooperative groups

Sweeney and Danneberger (1995) favored the explanation that fairway clones had diverged becaue of differential selection pressures.

RAPD marker diversity among creeping bentgrass clones. (Plant Genetic Resources)

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.

ESTIMATING THE UNION EARNINGS EFFECT USING A SAMPLE OF DISPLACED WORKERS

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).

The maintenance of a cline in the marine snail Littorina saxatilis: the role of home site advantage and hybrid fitness

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.

Evaluating the dynamics of coevolution among geographically structured populations

Such systematic differences in behavior may also serve as the basis for differential selection in the context of an ecological process.

Random walks and organizational mortality

Values for differential selection in FHB resistance have not been previously reported.

Heritability of Fusarium head blight resistance and deoxynivalenol accumulation from barley accession CIho 4196. (Crop Breeding, Genetics & Cytology)

conclude that SSD will evolve most rapidly when differential selection pressures and variance dimorphism favoring the same direction of response are found.

Sexual size dimorphism as a correlated response to selection on body size: an empirical test of the quantitative genetic model