L4 stands for: language, learning, literacy, and lexicon, which are the topics of most interest to the founders of the L4 Lab.
🗣 Language, Learning, Literacy, Lexicon: Learning how these 4 topics interact in communication
👩💼 PI: Mary Alt, PhD, CCC-SLP
📍 University of Arizona
1131 E. 2nd St., Tucson, Arizona 85721 The lab was originally co-directed by Mary Alt and Tiffany Hogan, but since Dr. Hogan moved to Nebraska, it is now a single-director operation. We tend to have lots of graduate and undergraduate students contrib
06/22/2026
Our lab at the University of Arizona is doing an in-person treatment study to learn what helps 2- and 3-year-olds say more words! We’re enrolling now for the fall semester! Children must be 2 or 3 when they start treatment, but families can sign up before children are 2. Contact us at 520-276-8709 or [email protected].
06/22/2026
Our lab at the University of Arizona is doing an in-person treatment study to learn what helps 2- and 3-year-olds say more words! We're enrolling NOW for the fall semester.
Children must be 2 or 3 when they start treatment, but families can sign up before children are 2.
Contact us at (520) 276-8709 or [email protected]
06/15/2026
We are continuing to seek participants for a virtual toddler vocabulary study! Thank you to those who have already signed up and/or shared!
Study details:
-It’s open to families anywhere in the United States.
-It's for 2-year-olds with typical communication and overall development. (This is not a treatment study).
-Parents will complete a questionnaire and fill out checklists about their child's vocabulary.
-Children must hear only English at home.
-Parents will receive a summary of their child's results after completing both sets of checklists.
Intake form: https://redcap.link/mx7hdyec
Email: [email protected]
Text: (520) 369-3395
06/09/2026
We had a wonderful time at SRCLD 2026! The L4 Lab team--both current students and alum--did a fantastic job presenting the meaningful work they're conducting. Here are some of our SRCLD memories!
04/24/2026
Our lab at the University of Arizona is doing an in-person treatment study to learn what helps 2- and 3-year-olds say more words.
Children must be 2 or 3 when they start treatment, but families can sign up before children are 2!
Contact us at (520) 276-8709 or [email protected]
04/21/2026
Our lab is conducting a remote research study to learn about vocabulary in typically-developing 2-year-olds!
Intake form here: https://redcap.link/mx7hdyec (or email: [email protected])
04/07/2026
So excited to have our lab's work featured on the The Informed SLP!!