Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach04:35

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach

3.7K
Mixed-effects models are flexible and useful tools for analyzing data with a hierarchical stochastic structure in forestry and could also be used to significantly improve the performance of forest growth models. Here, a protocol is presented that synthesizes information relating to linear mixed-effects...
3.7K
Analysis and Specification of Starch Granule Size Distributions08:46

Analysis and Specification of Starch Granule Size Distributions

5.6K
Presented here is a procedure for reproducible and statistically valid determinations of starch granule size distributions, and for specifying the determined granule lognormal size distributions using a two-parameter multiplicative form. It is applicable to all granule sizing analyses of gram-scale starch samples for plant and food science research.
5.6K
Factors Affecting Dissolution: Particle Size and Effective Surface Area01:23

Factors Affecting Dissolution: Particle Size and Effective Surface Area

1.6K
Dissolution kinetics, an essential aspect of oral drug delivery, is significantly influenced by the drug's particle size. According to the Noyes-Whitney dissolution model, the dissolution rate correlates directly with the drug's surface area. The larger the surface area, the higher the drug's solubility in water, leading to a faster drug dissolution rate. Reducing particle size increases the effective surface area, enhancing the dissolution process. Micronization and nanosizing are...
1.6K
Demonstration of the Power Law Model Through Extrusion10:22

Demonstration of the Power Law Model Through Extrusion

11.2K
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA
Polymer melts are often formed into simple shapes or "extrudates", such as cylindrical pellets, flat sheets, or pipe, using an extruder.1 Polyolefins are among the most common extrudable polymers. Extrusion involves transporting and melting solid feed, which is sometimes mixed with non-polymeric materials, and the pressure build-up and transport of the melt or...
11.2K
Nanoparticle Tracking Analysis for the Quantification and Size Determination of Extracellular Vesicles09:19

Nanoparticle Tracking Analysis for the Quantification and Size Determination of Extracellular Vesicles

9.6K
We demonstrate how to use a novel nanoparticle tracking analysis instrument to estimate the size distribution and total particle concentration of extracellular vesicles isolated from mouse perigonadal adipose tissue and human plasma.
9.6K
A Simple Critical-sized Femoral Defect Model in Mice09:41

A Simple Critical-sized Femoral Defect Model in Mice

15.7K
Animal models are frequently employed to mimic serious bone injury in biomedical research. Due to their small size, establishment of stabilized bone lesions in mice are beyond the capabilities of most research groups. Herein, we describe a simple method for establishing and analyzing experimental femoral defects in mice.
15.7K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

On the Construct Validity of Performance-Based Emotion Recognition Tests: Correlations with Social-Emotional Functioning and Cognitive Skills.

Psychologica Belgica·2026
Same author

Compliance modulation of a soft robotic atrioventricular model of heart failure with preserved ejection fraction.

Nature communications·2026
Same author

Hemi-ECMO: A Novel Method of Left Ventricular Afterload Reduction for Venoarterial Extracorporeal Membrane Oxygenation (VA-ECMO).

Bioengineering (Basel, Switzerland)·2026
Same author

Adding volition to word processing: Expected utility norms for 80,000 English words and multiword expressions.

Behavior research methods·2026
Same author

The formaldehyde dispute - Part B: scientific critique of EPA's formaldehyde occupational exposure values (OEVs) and proposed alternative occupational exposure limits (OELs).

Critical reviews in toxicology·2026
Same author

The formaldehyde dispute - Part A: acute and chronic inhalation toxicity and the evolution of scientific knowledge.

Critical reviews in toxicology·2026
Same journal

Orthographic Neighbourhood Size Effects in Chinese Character Recognition: Small, Inconsistent, and Theoretically Ambiguous.

Journal of cognition·2026
Same journal

The Role of Different Thoughts in Tacit Coordination and Its Malleability by Interventions.

Journal of cognition·2026
Same journal

The Impact of Prior Beliefs about Volatility on Adaptive Behavior.

Journal of cognition·2026
Same journal

Proactive Control of Emotional Information in Adult ADHD.

Journal of cognition·2026
Same journal

Knowledge Gap Illustrations Spark Curiosity.

Journal of cognition·2026
Same journal

Centre-of-Mass Confounds Contribute to Familiar Size Stroop Effects with Boger and Firestone's 'Visual Anagrams'.

Journal of cognition·2026
See all related articles

Related Experiment Video

Updated: Jan 19, 2026

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach
04:35

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach

Published on: July 3, 2020

3.7K

Power Analysis and Effect Size in Mixed Effects Models: A Tutorial.

Marc Brysbaert1, Michaël Stevens2

  • 1Department of Experimental Psychology, Ghent University, Henri Dunantlaan 2, B-9000 Gent, BE.

Journal of Cognition
|September 14, 2019
PubMed
Summary
This summary is machine-generated.

Replication rates in psychology are low. Properly powered studies, especially in cognitive psychology reaction time experiments, require at least 1,600 observations per condition to ensure reliable findings.

Keywords:
F1 analysisF2 analysiseffect sizemixed effects modelspower analysisrandom factors

More Related Videos

Analysis and Specification of Starch Granule Size Distributions
08:46

Analysis and Specification of Starch Granule Size Distributions

Published on: March 4, 2021

5.6K
Nanoparticle Tracking Analysis for the Quantification and Size Determination of Extracellular Vesicles
09:19

Nanoparticle Tracking Analysis for the Quantification and Size Determination of Extracellular Vesicles

Published on: March 28, 2021

9.6K

Related Experiment Videos

Last Updated: Jan 19, 2026

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach
04:35

Development of an Individual-Tree Basal Area Increment Model using a Linear Mixed-Effects Approach

Published on: July 3, 2020

3.7K
Analysis and Specification of Starch Granule Size Distributions
08:46

Analysis and Specification of Starch Granule Size Distributions

Published on: March 4, 2021

5.6K
Nanoparticle Tracking Analysis for the Quantification and Size Determination of Extracellular Vesicles
09:19

Nanoparticle Tracking Analysis for the Quantification and Size Determination of Extracellular Vesicles

Published on: March 28, 2021

9.6K

Area of Science:

  • Psychology
  • Cognitive Psychology
  • Research Methodology

Background:

  • Replication crisis in psychology: published findings are less successful than expected.
  • Current replication rates are below 40%, significantly lower than the expected 80% for properly powered studies.
  • Cognitive psychology researchers face challenges in power estimation due to complex study designs involving stimuli and participants.

Purpose of the Study:

  • To address the limitations in power estimation for cognitive psychology studies.
  • To provide practical recommendations for achieving adequate statistical power in reaction time experiments.
  • To inform meta-analytic practices regarding the influence of stimulus numbers on effect size reporting.

Main Methods:

  • Literature review on power analysis and study design in psychology.
  • Application of recent software packages to analyze data from two high-powered masked priming studies.
  • Analysis of power estimation and reduction strategies for reaction time experiments.

Main Results:

  • Properly powered repeated-measures reaction time experiments require a minimum of 1,600 observations per condition (e.g., 40 participants, 40 stimuli).
  • This recommended sample size is substantially larger than current common practice.
  • Effect sizes reported in meta-analyses are dependent on the number of stimuli, necessitating inclusion of observation counts.

Conclusions:

  • Researchers should increase sample sizes in reaction time experiments to ensure replicability.
  • New methods and software can aid in accurate power estimation for complex cognitive psychology designs.
  • Standardized reporting of observation numbers in meta-analyses is crucial for accurate effect size interpretation.