Principal Investigators’ New Websites

May 6, 2020:

Stephanie Lanza, Bethany Bray, Linda Collins, Susan Murphy, Runze LiAs previously announced, substantial changes lie ahead for The Methodology Center. Over the coming months, we will stop updating this website. Resources will remain available for at least a year, but in order to provide the latest information, each of our investigators will maintain her or his own website. These sites will include content developed at The Methodology Center and new resources related to the researcher’s future work.

Stephanie Lanza and Ashley Linden-Carmichael built a website for the Addictions and Innovative Methods (AIM) lab. Their great new site, https://aimlab.psu.edu/, describes their research and includes the content about time-varying effect modeling (TVEM) from The Methodology Center’s website.

Susan Murphy has incorporated The Methodology Center’s content on just-in-time adaptive interventions in her website, http://people.seas.harvard.edu/~samurphy/. The site also includes workshop materials and other resources.

Bethany Bray‘s new site at https://bcbray.com/ will include The Methodology Center’s resources for latent class analysis (LCA) and latent transition analysis (LTA). Bethany has concrete plans for new LCA and LTA resources, so stay tuned.

Runze Li will update his page at http://personal.psu.edu/ril4/ to incorporate Methodology Center resources on variable screening and variable selection for high-dimensional data analysis.

Linda Collins will build a new website to house The Methodology Center’s content on the multiphase optimization strategy (MOST) for optimizing interventions after she moves to New York University. In the meantime, follow Linda on Twitter, @collins_most.

Daniel Almirall and Inbal “Billie” Nahum-Shani’s informative website, https://d3lab.isr.umich.edu, will soon incorporate The Methodology Center’s resources for the sequential, multiple assignment, randomized trial (SMART).

More information will follow in June or July. Thank you for staying connected to our research! We are all proud of our time at The Methodology Center and very excited about the future.

Video: Two-Hour Webinar on Latent Class Analysis (LCA)

March 19, 2019:

 

Thanks to all who participated in our 1 & 1 workshop on latent class analysis (LCA). This is a video of the webinar that Methodology Center Associate Director Bethany Bray presented on Thursday, February 26, 2019. The video includes both the one-hour presentation and the one-hour question-and-answer session that followed. This recording is a great way to learn the basics of LCA or to use as a refresher.

Download the presentation slides.

Watch the video on YouTube.

Video: Two-Hour Webinar on Latent Transition Analysis

April 10, 2018:

Thanks to all who participated in our 1 & 1 workshop on latent transition analysis (LTA). This is a video of the webinar that Methodology Center Associate Director Bethany Bray presented on Thursday, March 29, 2018. The video includes both the one-hour presentation and the one-hour question-and-answer session that followed. This recording is a great way to learn the basics of LTA.

We will continue to host more 1 & 1 workshops. Our next 1 & 1 will be on Thursday, June 14, from 3:00 to 5:00 p.m. Eastern Time, when Methodology Center Investigator Susan Murphy presents an introduction to the micro-randomized trial.

Watch the video on YouTube.

Free, Two-Hour, Online Workshop on Latent Transition Analysis

February 9, 2018:online workshop lta

For our next 1 & 1 workshop, Methodology Center Associate Director Bethany Bray will present an introduction to latent transition analysis (LTA). 1 & 1 workshops consist of a one-hour live video presentation on a method followed by a one-hour question-and-answer session with the presenter. After the presentation, Bethany will accept questions via instant message and answer them live. The workshop will be held on Thursday, March 29, from 3:00 to 5:00 p.m. ET.

LTA and latent class analysis (LCA) are closely related methods. LCA identifies unobservable (latent) subgroups within a population based on individuals’ responses to multiple observed variables. LTA is an extension of LCA that uses longitudinal data to identify movement between the subgroups over time. Workshop participants should possess basic familiarity with LCA before attending. For an introduction to LCA, see Collins and Lanza (2010) or Lanza, Bray, and Collins (2013).

The 1 & 1 will be hosted via Zoom webinar at https://psu.zoom.us/j/618654311. The workshop can accommodate up to 500 participants, so all interested people should be able to attend. If you try to attend the workshop but are unable to log on for any reason, please send an email to mchelpdesk@psu.edu. We hope you will join us.

References

Collins, L. M., & Lanza, S. T. (2010). Latent class and latent transition analysis: With applications in the social, behavioral, and health sciences. New York: Wiley.

Lanza, S. T., Bray, B. C., & Collins, L. M. (2013). An introduction to latent class and latent transition analysis. In J. A. Schinka, W. F. Velicer, & I. B. Weiner (Eds.), Handbook of psychology (2nd ed.,Vol. 2, pp. 691-716). Hoboken, NJ: Wiley.