The value and practicality of deliberate sampling for heterogeneity: A critical multiplist perspective
The value and practicality of deliberate sampling for heterogeneity: A critical multiplist perspective
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DOI：
10.1016/s1098-2140(99)80214-8
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发表时间：
1998-09-01
影响因子：
1.7
通讯作者：
Blankertz, L
中科院分区：
文献类型：
--
作者：
Blankertz, L
本文描述了使用临界多重性来评估随机抽样和故意抽样异质性的优点和缺点，根据每种类型的抽样能力（1）帮助建立因果关系;（2）生成准确的总体参数描述。有必要评估随机抽样的替代办法，因为采用这种方法往往不可行。异质性的刻意取样本身可以被看作是临界多重性的一种应用。当总体参数未知时，提出了一个利用有意抽样的异质性模型。该模型，沿着与关键的多元化，是应用在心理社会康复劳动力的研究。这些数据表明，故意抽样异质性可能是更有用的理论和假设比生成准确的估计人口参数。
This paper contains a description of the use of critical multiplism to evaluate the advantages and disadvantages of random sampling and deliberate sampling for heterogeneity, according to the ability of each type of sampling to (1) aid in establishing causal relationships; and (2) to generate accurate descriptions of population parameters. It is necessary to evaluate alternatives to random sampling because it is often not feasible to apply this methodology. Deliberate sampling for heterogeneity can itself be seen as an application of critical multiplism. A model is suggested for utilizing deliberate sampling for heterogeneity when the population parameters are unknown. The model, along with critical multiplism, is applied in a study of the psychosocial rehabilitation workforce. The data suggests that deliberate sampling for heterogenity may be more useful for generating theories and hypotheses than for generating accurate estimates of population parameters.