Inversion effects in the perception of the moving human form: a comparison of adolescents with autism spectrum disorder and typically developing adolescents.

Sparaci et al. (2014) showed upside-down walking figures to two groups of teens. One group had autism. The other group had typical development.

The teens pressed keys to say if the figure walked left or right. The test used both upright and inverted clips. The team wanted to know if the autism group would be less thrown off by the upside-down bodies.

Both groups slowed down the same amount when the walker flipped. The autism teens showed the same body-inversion dip as their peers.

Moving bodies, not static photos, kept configural processing intact in autism. Motion cues seemed to normalize the task.

Kleinert et al. (2007) saw no inversion effect for static body poses in adults with autism. The new study finds the effect is there when the body moves. Age and motion, not autism status, explain the gap.

van Timmeren et al. (2016) also used moving dots and found that autistic youth recognized them fine but did not adapt as much after repeated clips. Laura et al. add that the first-pass configural step works; the later recalibration step lags.

Hedley et al. (2015) saw equal face-inversion drops in adults. Together the papers map a boundary: inversion effects appear for both faces and moving bodies, but not for still body postures, in autism.

You can lean on motion when teaching body language. Use video clips, not frozen photos, in social skills lessons. If a teen struggles to read a stance, ask him to watch the person walk; the movement may trigger normal configural cues.