Expert Training in R.
From Anywhere, Any Time.

In this on-demand workshop, Sarfaraz Serang teaches you how to test latent growth curve models with lavaan. With clear hands-on lessons, he'll take you through each step of analyzing growth curve models, from writing syntax to interpreting output, all the way to reporting results. Use the dropdown menu below to see what’s included in this online course:

    1. S1 - Introduction to Workshop

    2. Handouts, data files, references, and R code

    3. S2 - Reading and Plotting Data in R

    4. S3 - Linear Growth Curve Models

    5. S4 - Intro to lavaan

    6. S5 - Covariates and Bivariate LGMs

    1. S6 - Nonlinear Trajectories

    2. S7 - Categorical Data

    3. S8 - Factorial Invariance

    4. S9 - Second Order Growth Curves

    5. S10 - Final Thoughts

Meet Your Instructor

Sarfaraz Serang, Ph.D.

Sarfaraz Serang is an Assistant Professor of Quantitative Psychology at the University of South Carolina.  His research focuses on developing innovative statistical techniques for modeling change in the context of structural equation modeling and statistical learning.  Through his live workshops, online tutorials, and R software packages, he has helped researchers at all levels to develop their statistical skills.  


Tax-exempt institutions in the United States, please start here.

Latent Growth Curve Modeling with lavaan is available for immediate access. Please contact us if you need an invoice prior to purchase or have a larger group.

Payment is accepted by credit card, Paypal, or bank transfer (euros & GPB). Bank transfer instructions are here.

Group licenses provide the lowest per-person cost.

Further discounts are available for researchers working in LMICs; apply here to get started.

Bank Transfer Information

Bank transfers are accepted in euros and GBP. Please contact us if your bank is outside of the EU, SEPA, or UK.

Kindly allow 3 business days for payment to post.

euros (EU & SEPA only)
GBP (UK only)
Student/Postdoc:  275
Group: €914

Account holder:  QuantFish LLC
IBAN:  BE20 9672 6025 0356

Avenue Louise 54, Room S52 

The following information is required to ensure proper enrollment:  
  • Name of person enrolling (only the contact person if enrolling a group)
  • Email address
  • Requested course(s)

Student/Postdoc:    £229
Group:  £761

Account holder:  QuantFish LLC
Sort code: 
Account number: 
GB50 TRWI 2314 7087 9607 44

56 Shoreditch High Street, London E1 6JJ, United Kingdom

The following information is required to ensure proper enrollment:  

  • Name of person enrolling (only the contact person if enrolling a group)
  • Email address
  • Requested course(s)

Bundle Courses
& Save Funds

The SEM with R Bundle is a discounted 3-course sequence taught by 4 experts in latent variable models in R.

Get 3 deadline-free courses for a discount: Latent Variable Modeling with R, Mediation & Moderation Analysis with R, & Latent Growth Curve Modeling with lavaan.

The courses are taken on your schedule. You'll keep access to your courses, so you can return to them whenever you need to.

Need to wait for approval from your institution?

Contact us so we can help
with invoicing.


  • What level of statistical training is required for the course?

    This course is for learners with a thorough understanding of regression analysis. A basic understanding of S.E.M., multilevel modeling, and R is helpful for getting the most out of the course, but not required.

  • Is there a time limit for the course?

    Once you enroll and the course has launched, you will have unlimited access to the content. You are free to pause and return to your lessons as needed.

  • Will you give me feedback on my analyses?

    Unfortunately, personal feedback is not possible given the volume of researchers we serve. We are certain that Dr. Serang's thorough approach to guiding you through every step of using lavaan, along with the helpful handouts included in the course, will enable you to successfully test growth curve models with your own data. Note that we here at QuantFish are always happy to help you navigate any technical issues related to the course itself.

How the Course Works

Follow these steps to start learning latent growth curve modeling:

  • 1. Enroll in the Course

    You will receive a payment receipt by email from QuantFish and instructions for accessing your Student Dashboard. Latent Growth Curve Modeling with lavaan is available to start immediately.

  • 2. Start Learning

    Begin the course when the time is right for you. Visit your student dashboard, click on the course, and watch the introductory video to get started. Subsequent lessons are shown to you in sequential order, along with the PDF resources. Plan on each module to take about two hours, plus practice time. At the completion of the course, we will provide a certificate of completion that you can use for your own professional needs.

  • 3. Share Your Success!

    The best part of our work here at QuantFish is seeing our trainees implement their newfound analytic skills in their own research. We LOVE hearing about published papers and successful defenses. Find us on social media or shoot us an email so we can celebrate with you!

Let's Keep in Touch

New courses are always coming! Add your email to our list to get the latest updates.

Thank You

Satisfaction Guarantee

QuantFish is dedicated to providing courses that improve your analytic skills with accessible lessons from the world's leading methodologists.  Latent Growth Curve Modeling with lavaan  is backed by a complete money-back guarantee for 7 days following the start of the course.