Autism & Developmental

Toddlers with Williams syndrome process upright but not inverted faces holistically.

Cashon et al. (2013) · Journal of autism and developmental disorders 2013
★ The Verdict

Toddlers with Williams syndrome already treat upright faces as whole units—use real faces first in social teaching.

✓ Read this if BCBAs running early social-skills sessions with toddlers or preschoolers who have Williams syndrome.
✗ Skip if Clinicians whose caseloads are only autism or older clients.

01Research in Context

01

What this study did

The team watched toddlers with Williams syndrome look at faces.

They used eye-tracking to see if the kids treated upright faces as whole pictures.

They also showed upside-down faces to check if the skill was special to real faces.

02

What they found

The toddlers saw upright faces as whole images.

When faces were flipped, the kids stopped using the whole-face trick.

This shows early face expertise is already on board in Williams syndrome.

03

How this fits with other research

McCarron et al. (2013) seems to disagree. They found older people with Williams syndrome looked less at faces and missed mental states.

The clash clears up when you see the age gap: toddlers in Cashon et al. (2013) show perceptual skill, while Mary’s older group hits social-cognition limits.

Eussen et al. (2016) backs the toddler story. They saw typical attention to upside-down faces, so the upright edge is about configural skill, not general face fever.

Casey et al. (2009) adds that the extra face gaze in Williams syndrome works only for real people, not cartoons—use human faces in your lessons.

04

Why it matters

You can build on this strength. Start social games with upright human faces your client already processes well.

Pair new names or feelings with clear front-view photos before moving to cartoons or angled shots.

Watch for anxiety: Robertson et al. (2013) show anxious kids may look away from eyes, so keep the mood light and the faces friendly.

Free CEUs

Want CEUs on This Topic?

The ABA Clubhouse has 60+ free CEUs — live every Wednesday. Ethics, supervision & clinical topics.

Join Free →
→ Action — try this Monday

Open your next lesson with a large, upright photo of a smiling human face and label emotions right on the picture.

02At a glance

Intervention
not applicable
Design
single case other
Population
developmental delay
Finding
positive

03Original abstract

Holistic processing of upright, but not inverted, faces is a marker of perceptual expertise for faces. This pattern is shown by typically developing individuals beginning at age 7 months. Williams syndrome (WS) is a rare neurogenetic developmental disorder characterized by extreme interest in faces from a very young age. Research on the effects of inversion on holistic processing of faces by older children and adults with WS has produced mixed results. Younger children with WS were not included in these previous studies. Using the habituation switch paradigm, we demonstrated that 15-35-month-olds with WS process upright, but not inverted, faces holistically. This study provides evidence of perceptual expertise for faces in individuals with WS early in life.

Journal of autism and developmental disorders, 2013 · doi:10.1111/j.2044-8295.1988.tb02747.x