experimental study

简明释义

1. 实验研究; 2. 试验研究;

英英释义

例句

1.The findings of the experimental study revealed significant differences between the control and treatment groups.

这项实验研究的结果显示对照组和治疗组之间存在显著差异。

2.To validate their hypothesis, the scientists carried out an experimental study involving multiple variables.

为了验证他们的假设，科学家们进行了一个涉及多个变量的实验研究。

3.The researchers conducted an experimental study to determine the effects of sleep deprivation on cognitive performance.

研究人员进行了一个实验研究以确定睡眠剥夺对认知表现的影响。

4.An experimental study was designed to assess the impact of different teaching methods on student learning outcomes.

设计了一项实验研究以评估不同教学方法对学生学习成果的影响。

5.In this experimental study, participants were divided into two groups to test the effectiveness of a new drug.

在这项实验研究中，参与者被分为两组以测试一种新药的有效性。

作文

An experimental study is a research method that allows scientists and researchers to test hypotheses and observe the effects of certain variables in a controlled environment. This type of study is fundamental in various fields, including psychology, medicine, and social sciences. The primary goal of an experimental study is to establish cause-and-effect relationships between different factors. For instance, in a clinical trial for a new medication, researchers might conduct an experimental study to determine whether the drug has a significant effect on patients compared to a placebo. By randomly assigning participants to either the treatment group or the control group, researchers can minimize biases and ensure that the results are valid and reliable.One of the key features of an experimental study is the manipulation of independent variables while controlling for extraneous variables. This means that researchers actively change one or more variables to observe the outcome. For example, if a psychologist wants to understand the impact of sleep deprivation on cognitive performance, they might design an experimental study where one group of participants is allowed to sleep normally while another group is kept awake for 24 hours. By comparing the performance of both groups on cognitive tasks, the researcher can draw conclusions about the effects of sleep deprivation.Another important aspect of an experimental study is randomization. Random assignment helps ensure that each participant has an equal chance of being placed in any group, which reduces selection bias and enhances the validity of the findings. In addition to randomization, researchers often use blinding techniques to prevent participants and/or researchers from knowing which group individuals belong to, further minimizing bias.The results obtained from an experimental study can provide valuable insights into human behavior, biological processes, and social phenomena. However, it is important to note that while experimental studies can establish causality, they may not always reflect real-world situations. This limitation is known as ecological validity. For example, a study conducted in a laboratory setting may not accurately represent how people behave in their everyday lives. Thus, researchers often complement experimental studies with observational studies or field experiments to gain a more comprehensive understanding of the phenomenon being studied.In conclusion, an experimental study is a powerful tool in research that allows for the testing of hypotheses and the establishment of causal relationships. Through careful design, manipulation of variables, and randomization, researchers can obtain reliable data that contribute to our understanding of various fields. While there are limitations to experimental studies, their importance in advancing knowledge cannot be overstated. As science continues to evolve, the principles of experimental study will remain crucial in uncovering the complexities of the world around us.

实验研究是一种研究方法，允许科学家和研究人员在受控环境中测试假设并观察某些变量的影响。这种类型的研究在心理学、医学和社会科学等多个领域是基础性的。实验研究的主要目标是建立不同因素之间的因果关系。例如，在新药物的临床试验中，研究人员可能会进行一项实验研究，以确定该药物对患者是否与安慰剂相比有显著效果。通过随机将参与者分配到治疗组或对照组，研究人员可以最小化偏见，确保结果的有效性和可靠性。实验研究的一个关键特征是操纵自变量，同时控制外部变量。这意味着研究人员主动改变一个或多个变量以观察结果。例如，如果一位心理学家想了解睡眠剥夺对认知表现的影响，他们可能会设计一项实验研究，其中一组参与者被允许正常睡眠，而另一组则被保持清醒24小时。通过比较两组在认知任务上的表现，研究人员可以得出关于睡眠剥夺影响的结论。实验研究的另一个重要方面是随机化。随机分配有助于确保每个参与者有同等机会被分配到任何组，从而减少选择偏差，提高研究结果的有效性。除了随机化，研究人员通常使用盲法技术，以防止参与者和/或研究人员知道个体所属的组，从而进一步最小化偏见。从实验研究中获得的结果可以提供对人类行为、生物过程和社会现象的宝贵见解。然而，重要的是要注意，虽然实验研究可以建立因果关系，但它们可能并不总是反映现实世界的情况。这种限制被称为生态效度。例如，在实验室环境中进行的研究可能无法准确代表人们在日常生活中的行为。因此，研究人员通常将实验研究与观察研究或现场实验相结合，以获得对所研究现象的更全面理解。总之，实验研究是研究中的一种强大工具，允许测试假设和建立因果关系。通过精心设计、变量操纵和随机化，研究人员可以获得可靠的数据，为我们对各个领域的理解做出贡献。尽管实验研究存在局限性，但其在推动知识进步方面的重要性不容低估。随着科学的不断发展，实验研究的原则将继续在揭示我们周围世界的复杂性中发挥关键作用。