Purposive Sampling as a Tool for Informant Selection
Purposive Sampling as a Tool for Informant Selection
复制标题
DOI：
10.17348/era.5.0.147-158
复制
发表时间：
2007-12
影响因子：
--
通讯作者：
M. D. Tongco
中科院分区：
文献类型：
--
作者：
M. D. Tongco
知情者选择与民族植物学研究高度相关，因为人们不断地寻找知识和信息。目的抽样技术是一种非概率抽样技术，当需要研究某一文化领域时，其中有知识渊博的专家时，它是最有效的。有目的抽样也可以与定性和定量研究技术一起使用。该方法的固有偏差有助于提高其效率，即使在对随机概率抽样进行测试时，该方法也保持稳健。选择有目的的样本对所收集数据的质量至关重要;因此，必须确保提供信息者的可靠性和能力。
Informant selection is highly relevant for ethnobotanical research, as people are constantly looked upon for knowledge and information. The purposive sampling technique is a type of non-probability sampling that is most effective when one needs to study a certain cultural domain with knowledgeable experts within. Purposive sampling may also be used with both qualitative and quantitative research techniques. The inherent bias of the method contributes to its efficiency, and the method stays robust even when tested against random probability sampling. Choosing the purposive sample is fundamental to the quality of data gathered; thus, reliability and competence of the informant must be ensured.