Vahid Aryadoust, PhD

@UCfu2GCdjq50W-kL-cv3rcLw - 23.2K subscribers

Hi there! Welcome to Statistics and Theory, a YouTube channel dedicated to promoting and propagating anything scientific about language in general and quantitative and assessment methods in particular. You will find a range of videos on topics such as language comprehension, language production, quantitative techniques, and language testing methods that will be of interest to the general public and/or specialists. In addition, there are three types of memberships available. Through your membership, you will support the channel and have a better chance to discuss your research questions, study design, and publication questions with us. As always, please free to contact me if you have any questions :-) Best wishes, Vahid Aryadoust Statistics & Theory

Home Videos Live Playlists

Invariance in the Rasch model explained: The Andersen's likelihood test in Jamovi

Invariance in the Rasch model explained: The Andersen's likelihood test in Jamovi Vahid Aryadoust, PhD

254 views - 2 weeks ago

Testing unidimensionality in the Rasch model via the Martin-Löf test | Jamovi

Testing unidimensionality in the Rasch model via the Martin-Löf test | Jamovi Vahid Aryadoust, PhD

367 views - 3 weeks ago

Setting up our Generative AI and sensor technology lab

Setting up our Generative AI and sensor technology lab Vahid Aryadoust, PhD

309 views - 1 month ago

The GPT-Powered Speaking Examiner: LLM-based spoken dialogue systems in language assessment

The GPT-Powered Speaking Examiner: LLM-based spoken dialogue systems in language assessment Vahid Aryadoust, PhD

937 views - 5 months ago

Pausing, Language, and the Brain: L2 Speaking and Writing Explained | Interface 5

Pausing, Language, and the Brain: L2 Speaking and Writing Explained | Interface 5 Vahid Aryadoust, PhD

617 views - 6 months ago

Reliability analysis (update) 4 | McDonald's ω vs Cronbach's α

Reliability analysis (update) 4 | McDonald's ω vs Cronbach's α Vahid Aryadoust, PhD

581 views - 7 months ago

Large language models, foundation models, and NLP | Basic introduction

Large language models, foundation models, and NLP | Basic introduction Vahid Aryadoust, PhD

809 views - 8 months ago

Reliability analysis (update) 3 | Internal reliability: Cronbach's alpha

Reliability analysis (update) 3 | Internal reliability: Cronbach's alpha Vahid Aryadoust, PhD

344 views - 8 months ago

Reliability analysis (update) 2 | Internal reliability: Cronbach's alpha

Reliability analysis (update) 2 | Internal reliability: Cronbach's alpha Vahid Aryadoust, PhD

279 views - 8 months ago

Reliability analysis (update) 1 | External reliability over time, forms, & raters

Reliability analysis (update) 1 | External reliability over time, forms, & raters Vahid Aryadoust, PhD

418 views - 8 months ago

Receiving the Nanyang educator award for teaching #ntu

Receiving the Nanyang educator award for teaching #ntu Vahid Aryadoust, PhD

413 views - 1 year ago

Machine Learning Workshop Part 2 | Neural Networks & Regression

Machine Learning Workshop Part 2 | Neural Networks & Regression Vahid Aryadoust, PhD

2.3K views - 1 year ago

ChatGPT-4o vs. ChatGPT-o1 vs. Traditional Software: Regression Showdown!

ChatGPT-4o vs. ChatGPT-o1 vs. Traditional Software: Regression Showdown! Vahid Aryadoust, PhD

1.7K views - 1 year ago

What is “research waste” in applied linguistics research? | Interface 4

What is “research waste” in applied linguistics research? | Interface 4 Vahid Aryadoust, PhD

660 views - 1 year ago

Machine Learning Workshop Part 1 | Linear Regression with JASP

Machine Learning Workshop Part 1 | Linear Regression with JASP Vahid Aryadoust, PhD

3.2K views - 1 year ago

The Mode and median | Knowledge bites #3

The Mode and median | Knowledge bites #3 Vahid Aryadoust, PhD

339 views - 1 year ago

What is the mean of a sample? | Knowledge bites 2

What is the mean of a sample? | Knowledge bites 2 Vahid Aryadoust, PhD

232 views - 1 year ago

Population and Sample | Knowledge Bites 1

Population and Sample | Knowledge Bites 1 Vahid Aryadoust, PhD

576 views - 1 year ago

Meta-analysis 2.0 in the Language Sciences: Current Advances in Synthetic Methods | Interface 3

Meta-analysis 2.0 in the Language Sciences: Current Advances in Synthetic Methods | Interface 3 Vahid Aryadoust, PhD

989 views - 1 year ago

Generative Artificial Intelligence in Language Assessment | 15th Harvard-China Education Symposium

Generative Artificial Intelligence in Language Assessment | 15th Harvard-China Education Symposium Vahid Aryadoust, PhD

1.5K views - 1 year ago

Partial and complete mediation in path analysis in Jamovi

Partial and complete mediation in path analysis in Jamovi Vahid Aryadoust, PhD

3.7K views - 2 years ago

Path analysis with mediation effects in Jamovi (with guidelines for writing journal articles)

Path analysis with mediation effects in Jamovi (with guidelines for writing journal articles) Vahid Aryadoust, PhD

6K views - 2 years ago

Multicategorical X continuous variables interaction in linear regression

Multicategorical X continuous variables interaction in linear regression Vahid Aryadoust, PhD

3.3K views - 2 years ago

Calculating t-values for Pearson correlations

Calculating t-values for Pearson correlations Vahid Aryadoust, PhD

3.5K views - 2 years ago

Linear mixed effect models in Jamovi | 4 | Fit and degrees of freedom

Linear mixed effect models in Jamovi | 4 | Fit and degrees of freedom Vahid Aryadoust, PhD

3.3K views - 2 years ago

Linear mixed effect models in Jamovi | 3 | Factor coding, scaling, & residual normality

Linear mixed effect models in Jamovi | 3 | Factor coding, scaling, & residual normality Vahid Aryadoust, PhD

5.4K views - 2 years ago

Linear mixed effect models in Jamovi | 2 | REML & Random Intercepts

Linear mixed effect models in Jamovi | 2 | REML & Random Intercepts Vahid Aryadoust, PhD

12.2K views - 2 years ago

Linear mixed effect models in Jamovi | 1 | Introduction

Linear mixed effect models in Jamovi | 1 | Introduction Vahid Aryadoust, PhD

15.8K views - 2 years ago

Using the Flesch-Kincaid readability index in your research or assignments

Using the Flesch-Kincaid readability index in your research or assignments Vahid Aryadoust, PhD

4.8K views - 3 years ago

Standard deviation, standard error of the mean, & confidence intervals

Standard deviation, standard error of the mean, & confidence intervals Vahid Aryadoust, PhD

13.2K views - 3 years ago

ANOVA in RStudio Part 2 | ANOVA, Model Fitting, Effect Size, Post-Hoc Analysis & Visualization

ANOVA in RStudio Part 2 | ANOVA, Model Fitting, Effect Size, Post-Hoc Analysis & Visualization Vahid Aryadoust, PhD

5.6K views - 3 years ago

ANOVA in RStudio Part 1 | Visualization, Normality Assumption, Homogeneity of Variance

ANOVA in RStudio Part 1 | Visualization, Normality Assumption, Homogeneity of Variance Vahid Aryadoust, PhD

12.8K views - 3 years ago

Independent samples t-test, Levene’s test, effect size, and normality in RStudio / R

Independent samples t-test, Levene’s test, effect size, and normality in RStudio / R Vahid Aryadoust, PhD

7.8K views - 3 years ago

Creating Boxplots in RStudio | ggplot library

Creating Boxplots in RStudio | ggplot library Vahid Aryadoust, PhD

24.4K views - 3 years ago

Validity of automated scoring in the era of machine learning and big data | Interface 2

Validity of automated scoring in the era of machine learning and big data | Interface 2 Vahid Aryadoust, PhD

2.2K views - 3 years ago

Getting Started with RStudio and R | Part 3

Getting Started with RStudio and R | Part 3 Vahid Aryadoust, PhD

14.6K views - 3 years ago

Getting Started with RStudio and R | Part 2

Getting Started with RStudio and R | Part 2 Vahid Aryadoust, PhD

34K views - 3 years ago

Getting Started with RStudio and R | Part 1

Getting Started with RStudio and R | Part 1 Vahid Aryadoust, PhD

125.1K views - 3 years ago

Cronbach's α and McDonald’s ω reliability coefficients in Jamovi | Theory and practice

Cronbach's α and McDonald’s ω reliability coefficients in Jamovi | Theory and practice Vahid Aryadoust, PhD

5.7K views - 3 years ago

Using Syntax in Structural Equation Modeling in Jamovi | Part 2

Using Syntax in Structural Equation Modeling in Jamovi | Part 2 Vahid Aryadoust, PhD

4.8K views - 4 years ago

Using Syntax in Structural Equation Modeling in Jamovi | Part 1

Using Syntax in Structural Equation Modeling in Jamovi | Part 1 Vahid Aryadoust, PhD

7.6K views - 4 years ago

Structural equation modeling using Jamovi | Part 2

Structural equation modeling using Jamovi | Part 2 Vahid Aryadoust, PhD

14.8K views - 4 years ago

Structural equation modeling using Jamovi | Part 1

Structural equation modeling using Jamovi | Part 1 Vahid Aryadoust, PhD

46.7K views - 4 years ago

Artificial intelligence, Neuroscience, and Validity | Interface 1

Artificial intelligence, Neuroscience, and Validity | Interface 1 Vahid Aryadoust, PhD

1.9K views - 4 years ago

Multigroup Structural Equation Modeling in AMOS (an update)

Multigroup Structural Equation Modeling in AMOS (an update) Vahid Aryadoust, PhD

16.3K views - 4 years ago

Statistics and Machine Learning

Statistics and Machine Learning Vahid Aryadoust, PhD

2.8K views - 4 years ago

Structural Equation Modeling of Latent Growth Curves with AMOS

Structural Equation Modeling of Latent Growth Curves with AMOS Vahid Aryadoust, PhD

5.7K views - 4 years ago

The neuroscience of test taking

The neuroscience of test taking Vahid Aryadoust, PhD

1.4K views - 4 years ago

Task-based assessment vs competency-based assessment

Task-based assessment vs competency-based assessment Vahid Aryadoust, PhD

3.3K views - 4 years ago

Effects of Poverty on the Brain and Academic Performance

Effects of Poverty on the Brain and Academic Performance Vahid Aryadoust, PhD

2.8K views - 4 years ago

Machine Learning using Boosting Regression in JASP free software | Supervised learning

Machine Learning using Boosting Regression in JASP free software | Supervised learning Vahid Aryadoust, PhD

10.4K views - 4 years ago

Structural equation modeling in free software JASP

Structural equation modeling in free software JASP Vahid Aryadoust, PhD

44.8K views - 4 years ago

Normality check, skewness, and kurtosis in free software JASP with references

Normality check, skewness, and kurtosis in free software JASP with references Vahid Aryadoust, PhD

7.8K views - 4 years ago

Mixture Rasch model analysis with free software Jamovi

Mixture Rasch model analysis with free software Jamovi Vahid Aryadoust, PhD

7.6K views - 4 years ago

Latent class cluster analysis with free software Jamovi

Latent class cluster analysis with free software Jamovi Vahid Aryadoust, PhD

16.4K views - 4 years ago

Rasch model analysis in free software Jamovi

Rasch model analysis in free software Jamovi Vahid Aryadoust, PhD

23.5K views - 4 years ago

Independent samples t-test and Mann-Whitney U test in Jamovi

Independent samples t-test and Mann-Whitney U test in Jamovi Vahid Aryadoust, PhD

10.9K views - 4 years ago

Normality, Skewness, Kurtosis, & Shapiro-Wilk normality test in Jamovi free software

Normality, Skewness, Kurtosis, & Shapiro-Wilk normality test in Jamovi free software Vahid Aryadoust, PhD

39.8K views - 4 years ago

Latent Growth Curve Modeling | Part 2 | Structural Equation Modeling

Latent Growth Curve Modeling | Part 2 | Structural Equation Modeling Vahid Aryadoust, PhD

2.9K views - 5 years ago

Latent Growth Curve Modeling | Part 1

Latent Growth Curve Modeling | Part 1 Vahid Aryadoust, PhD

4.3K views - 5 years ago