Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Blinding01:11

Blinding

3.2K
Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
3.2K
Group Design02:01

Group Design

9.7K
The most basic experimental design involves two groups: the experimental group and the control group. The two groups are designed to be the same except for one difference— experimental manipulation. The experimental group gets the experimental manipulation—that is, the treatment or variable being tested—and the control group does not. Since experimental manipulation is the only difference between the experimental and control groups, we can be sure that any differences between...
9.7K
Randomized Experiments01:13

Randomized Experiments

7.9K
The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
Simple randomization
Simple...
7.9K
Controls in Experiments01:13

Controls in Experiments

12.5K
When conducting an experiment, it is crucial to have control to reduce bias and accurately measure the dependent variables. It also marks the results more reliable. Controls are elements in an experiment that have the same characteristics as the treatment groups but are not affected by the independent variable. By sorting these data into control and experimental conditions, the relationship between the dependent and independent variables can be drawn. A randomized experiment always includes a...
12.5K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Visible-Light-Induced Release of Carbon Monoxide: Multifunctionally Treatment for Dry Eye Disease.

Nano letters·2026
Same author

Comprehensive genomic and computational insights into Brucella suis: pan-genome analysis, evolutionary perspectives, and in-silico vaccine design.

BMC genomics·2026
Same author

Death Literacy in a United States Community: A Cross-Sectional Study.

Omega·2026
Same author

Sleep Optimization to Improve Glycemic Targets in Adults With Type 1 Diabetes: A Randomized Controlled Parallel Intervention Trial.

Diabetes care·2026
Same author

Effect of Acupuncture for Chronic Nonspecific Low Back Pain: Study Protocol for a Randomized Double-Blind, Placebo-Controlled Trial.

JMIR research protocols·2026
Same author

Comorbid Conditions of Ehlers-Danlos Syndromes and Vulvodynia: A Latent Class Analysis.

Pain management nursing : official journal of the American Society of Pain Management Nurses·2026

相关实验视频

Updated: Sep 20, 2025

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
09:37

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Published on: July 5, 2015

9.2K

用TED演讲设计一个随机对照试验的注意力控制条件.

Karen A Nelson1, Sahereh Mirzaei1, Judith M Schlaeger2

  • 1University of California Los Angeles, School of Nursing, Los Angeles, CA, USA.

Western journal of nursing research
|May 26, 2025
PubMed
概括

这项研究引入了使用TED Talks进行临床试验的新注意力控制方法,确保了同等的参与者参与和标准化. 这种方法有助于通过控制注意力偏差来准确评估干预效应.

关键词:
在TED上演讲.针是一种针,针是一种针.注意力控制控制的注意力控制避孕药效应对安慰剂的影响随机对照试验是随机对照试验.

更多相关视频

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
13:00

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Published on: January 23, 2017

10.0K
A Dual Task Procedure Combined with Rapid Serial Visual Presentation to Test Attentional Blink for Nontargets
08:45

A Dual Task Procedure Combined with Rapid Serial Visual Presentation to Test Attentional Blink for Nontargets

Published on: December 5, 2014

9.3K

相关实验视频

Last Updated: Sep 20, 2025

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
09:37

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Published on: July 5, 2015

9.2K
Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
13:00

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Published on: January 23, 2017

10.0K
A Dual Task Procedure Combined with Rapid Serial Visual Presentation to Test Attentional Blink for Nontargets
08:45

A Dual Task Procedure Combined with Rapid Serial Visual Presentation to Test Attentional Blink for Nontargets

Published on: December 5, 2014

9.3K

科学领域:

  • 临床研究方法论 临床研究方法论
  • 实验设计 实验设计

背景情况:

  • 在临床试验中,有效的注意力控制至关重要,以将干预效应与参与者的注意力隔离.
  • 设计不良的对照组可能会扭曲结果,高估治疗效率或危及有益的疗法.

研究的目的:

  • 用TED演讲来描述一种新的注意力控制条件的发展.
  • 为在临床研究中设计强大的注意力控制条件提供建议.

主要方法:

  • 选择了24个TED演讲 (共4小时12分钟),涵盖了各种主题.
  • 为每次演讲制定了3-4个基于内容的问题 (真假,多选题).
  • 通过捆绑4-5个视频来匹配干预时间,创建了90分钟的注意力控制会议.

主要成果:

  • 开发的注意力控制条件确保参与者对实验组的注意力相当.
  • 设计保持了参与者的兴趣,并标准化了控制体验.
  • 该协议允许在对照组内评估预期效应.

结论:

  • 一个严格的注意力控制条件可以有效地使用TED Talks开发.
  • 拟议的协议为临床试验注意力控制提供了一种标准化和有吸引力的方法.