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Ask A Therapist: Vocalic /R/

Vocalic R and Glottal Fry Tips | TalkTools®
Ask a Therapist

Ask A Therapist: Vocalic /R/ and Glottal Fry Tips

In this Ask a Therapist post, Sara Rosenfeld-Johnson answers a reader whose clients struggle with both vocalic /r/ and glottal fry, sharing a jiggler vibration cue and explaining when the robot voice technique actually belongs in a treatment plan.

Quick Answer

For clients who struggle with both vocalic /r/ and glottal fry, hold a jiggler vibrator next to the larynx while cueing a sustained “ee” sound. In short, bring in the robot voice technique only if a client still can’t feel the back-of-tongue side spread placement against the upper palate without it.

Key Takeaways
  • Vocalic /r/ and glottal fry difficulties often show up together in the same clients, since both rely on subtle laryngeal and tongue placement awareness.
  • Holding a jiggler vibrator next to a child’s neck, for example, gives them extra sensory feedback for feeling vocal fold vibration during glottal fry.
  • Cue the vibration while the child sustains an “ee” sound, turning the motor on and directing it at the throat.
  • However, the robot voice technique isn’t required for every client. It’s only needed when a client can’t yet feel the target placement without it.
  • Specifically, the placement being targeted is “back of tongue side spread” against the upper palate, the foundation of accurate /r/ production.
  • Ultimately, both techniques come out of Sara Rosenfeld-Johnson’s Oral Placement Therapy (OPT™) approach, taught in TalkTools® clinical training courses.

Reader Question About Vocalic /R/ and Glottal Fry

Specifically, this question comes from a TalkTools® course attendee working through vocalic /r/ and glottal fry with several clients on her caseload.

From the Community

Hi Ms. Rosenfeld-Johnson,

I took your oral placement technique course in New York a few weeks ago. I have a few clients who have difficult with the /r/ and tried out the robot technique. A lot of those same kids also have trouble producing the glottal fry — do you have any pointers for me?

Thanks so much! And thanks for your wealth of knowledge. Your course really changed the way I look at a lot of my kids!!

Karen

Therapist Answer: Two Techniques for Glottal Fry Placement

Sara Rosenfeld-Johnson, MS, CCC-SLP, founder of TalkTools® and creator of Oral Placement Therapy (OPT™), answers directly below.

Therapist Response

Hi Karen,

Thank you for your kind words about the class content. I love this therapy and hope to share its benefits with other SLPs who have not had the opportunity to learn the techniques through their schooling. To hear that my work has changed, and I hope, benefited the way you look at your clients is a true gift so I thank you for that.

As to your question…. I have two responses:

1) You can hold a jiggler vibrator next to the child’s neck so they can feel extra vibration in the laryngeal area. Use the direction of turning on the motor in your throat as you ask the child to say the “ee” sound.

2) You will not need to teach the robot voice if the client can produce the required placement without the voice. It is only used if the client has trouble feeling the “back of tongue side spread” placement against the upper palate. I hope one of these options answers your question.

Sara Rosenfeld-Johnson, MS, CCC-SLP

The Two Techniques at a Glance

Technique 1
Jiggler Vibration at the Larynx
Hold a jiggler vibrator next to the neck near the larynx. Then turn it on and cue a sustained “ee” sound while directing the vibration toward the throat, giving the child tactile feedback for vocal fold vibration.
Technique 2
Robot Voice, Only When Needed
Skip the robot voice if the client can already produce the target placement without it. Otherwise, introduce it only when a client can’t yet feel the back-of-tongue side spread placement against the upper palate.
Clinical note: These cues build placement awareness; they aren’t meant to become permanent crutches. As soon as a client can produce the target sound without the extra vibration or vocal cue, fade the technique out.

Watch: Vibration Cueing for Oral Placement

For further practice, TalkTools® demonstrates related oral-motor vibration techniques with the Vibrator and Toothettes on its official YouTube channel, worth a look if you want to see vibration-based cueing in action.

Continuing Education
Three-Part Treatment Plan for Oral Placement Therapy
The course Karen references in her question. Here, Sara Rosenfeld-Johnson teaches the complete oral placement progression behind cues like the robot voice and jiggler vibration technique.
ASHA CEUs available
View Course Details

Frequently Asked Questions

Understanding Vocalic /R/ and Glottal Fry

What is vocalic /r/, and why do so many kids struggle with it?
The tongue has to hold a precise back-of-tongue side spread placement against the upper palate while the jaw and lips stay still, which is why r-colored vowels in words like car and water are so hard to teach through verbal cues alone. As a result, many kids need extra sensory input, like vibration, to actually feel where the tongue belongs.
What is glottal fry, and how is it connected to vocalic /r/ difficulty?
It’s a low, crackly voice quality made by slow, irregular vibration of the vocal folds, also called vocal fry or creaky voice. Kids who struggle to feel tongue placement for vocalic /r/ often have the same trouble sensing that vibration, since both rely on subtle laryngeal awareness.

Applying the Techniques in Therapy

How do you use a jiggler vibrator to help a child produce glottal fry?
Hold the vibrator next to the child’s neck, near the larynx, and turn it on while they sustain an “ee” sound. As a result, cueing the vibration’s direction at the throat gives the tactile input needed to connect vocal fold vibration with voicing they can’t yet feel on their own.
Does every child need the robot voice technique to produce /r/ correctly?
No. It’s only necessary when a client can’t yet feel the target tongue placement without it. Skip it entirely once a client can produce the placement on their own; adding cues a client doesn’t need just slows things down.
Where can SLPs learn this oral placement approach for vocalic /r/ hands-on?
For hands-on training, Sara Rosenfeld-Johnson teaches it in TalkTools® three-part treatment plan for oral placement therapy course, which covers the placement work behind cues like these, including jaw stability and lip-tongue coordination.

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