Field experiment

（重定向自Field experiments）

A field experiment applies the scientific method to experimentally examine an intervention in the real world (or as many experimentalists like to say, naturally occurring environments) rather than in the laboratory. Field experiments, like lab experiments, generally randomize subjects (or other sampling units) into treatment and control groups and compare outcomes between these groups. Field experiments are so named in order to draw a contrast with laboratory experiments, which enforce scientific control by testing a hypothesis in the artificial and highly controlled setting of a laboratory. Often used in the social sciences, and especially in economic analyses of education and health interventions, field experiments have the advantage that outcomes are observed in a natural setting rather than in a contrived laboratory environment. For this reason, field experiments are sometimes seen as having higher external validity than laboratory experiments. However, like natural experiments, field experiments suffer from the possibility of contamination: experimental conditions can be controlled with more precision and certainty in the lab. Yet some phenomena (e.g., voter turnout in an election) cannot be easily studied in a laboratory.

单词	Field experiments
释义	Field experiments 英语例句库 The laboratory and field experiments showed that the green leafhopper had a preference for yellow green and pale green. 室内外试验的结果基本一致，即假眼小绿叶蝉偏嗜黄绿色、浅绿色。 Field experiment was conducted to investigate the effects of treflan injection on dripper clogging and root distribution,yield and quality of winter wheat. 通过田间试验,研究了地下滴灌施加氟乐灵对滴头根系入侵堵塞的控制效应及其对冬小麦产量、品质和根系分布的影响。 A long-term field experiment was carried out to study the effect of fertilization on the organo-mineral complexation and the combined forms of humus of phaeozem in Jilin Province, China. 摘要利用长期定位试验研究了施肥对黑土有机无机复合及腐殖质结合形态的影响。原声例句历年英语专业八级真题听力（专项） Another method of observation with intervention is field experiment. What is a field experiment? 另一种干预观察是现场实验。什么是现场实验？历年英语专业八级真题听力（专项） The essential difference between field experiments and other observational methods is that researchers have more control in field experiments. 现场实验和其他观察方法的本质区别在于，现场实验中研究人员有较大的控制权。历年英语专业八级真题听力（专项） The field experiment represents the most extreme form of intervention in observational methods. 现场实验的干涉形式是所有观测方法中最极端的。历年英语专业八级真题听力（专项） Observation with intervention can be made in at least two ways, participant observation and field experiment. 干预观察可以通过至少两种方式进行，参与性观察和现场实验。科学60秒-科学美国人 2020年11月合集 In a field experiment, Dowdy and his colleague William Conner filmed how five different species of tiger moths responded to bat attacks. 在现场实验中，道迪及同事威廉·康纳拍摄了五种不同种类的虎蛾面对蝙蝠攻击时的反应。环境与科学 If this quotient is exceeded, the manufacturer is obliged to carry out a field experiment under realistic conditions to prove that the product is not harmful. 如果超过这个商数，制造商就有义务在实际条件下进行现场实验，以证明其产品是无害的。历年英语专业八级真题听力（专项） When an observer controls one or more conditions in a natural setting in order to determine the effect on behaviour, this procedure is called field experiment. 观察者控制自然情境中的一个或多个条件，以确定对行为的影响，这个过程称现场实验。 CNN 阅读精选 In another field experiment, a floating garden was installed above a sand bank, to explore if the roots could help stabilize already accumulated sand, and collect more. 在另一个实地实验中，在一个沙洲上安装了一个浮动花园，以探索植物的根系是否有助于稳定已经积累的沙子，并收集更多的沙子。英语百科 Field experiment （重定向自Field experiments） A field experiment applies the scientific method to experimentally examine an intervention in the real world (or as many experimentalists like to say, naturally occurring environments) rather than in the laboratory. Field experiments, like lab experiments, generally randomize subjects (or other sampling units) into treatment and control groups and compare outcomes between these groups. Field experiments are so named in order to draw a contrast with laboratory experiments, which enforce scientific control by testing a hypothesis in the artificial and highly controlled setting of a laboratory. Often used in the social sciences, and especially in economic analyses of education and health interventions, field experiments have the advantage that outcomes are observed in a natural setting rather than in a contrived laboratory environment. For this reason, field experiments are sometimes seen as having higher external validity than laboratory experiments. However, like natural experiments, field experiments suffer from the possibility of contamination: experimental conditions can be controlled with more precision and certainty in the lab. Yet some phenomena (e.g., voter turnout in an election) cannot be easily studied in a laboratory.
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