Self-selection

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Related to Self-selecting sample: convenience sample

Self-selection

Consequence of a contract that induces only one group to participate.

Self-Selection

A situation in which only one person or group can take advantage of a contract.
References in periodicals archive ?
He said: "You've basically got yourself a biased, self-selecting sample here.
You may argue that this is a self-selecting sample but you have already identified publicly an increased percentage of schools going into special measures or serious weaknesses and the NAHT survey reflects this.'
Opinion polls do not work as a barometer of views when they rely on respondents returning surveys themselves, which more often than not produces a self-selecting sample who are usually biased in one direction or another.
There are however some drawbacks, including technical incompatibilities; no universal e-mail directory; time delays in completion and return; and low penetration of the population, leading to self-selecting samples. With web surveys there may also be less control over the sample population, with a reliance on the survey being "found" on the website leading to sample bias.