Abstract
We examined the behavioral response (BR) and threshold (T) axes of Dunn’s four-quadrant model of sensory processing (1997). We assessed whether they are ordinal ranges and if variation is associated with other similarly described characteristics: Introversion/Extraversion (I/E) of Eysenck’s personality model (Sato, 2005), and somatosensory event related potentials (SERP) and their gating (Davies & Gavin, 2007). From healthy adults (n = 139), we obtained: Adult/Adolescent Profile (A/ASP, Brown & Dunn, 2002) and Eysenck’s Personality Questionnaire, Brief Version (Sato, 2005) scores and peak amplitude and gating factor of SERP P50. We found that BR scores did not differ across normative categories of the A/ASP, but T scores significantly increased along the axis. I/E scores did not vary with BR scores. There were no differences or correlations in P50 amplitudes and gating with T scores. The findings suggest that the BR axis may not reflect a construct with ordinal range, but the T axis may. Dunn’s concept of BR appears to be distinct from Eysenck’s concept of I/E. SERP and its gating may not be directly reflective of sensory processing thresholds in healthy adults. Conclusions are limited by having few participants with passive behavior regulation or low threshold patterns of processing.
Highlights
In 2007, Davies and Gavin tested the hypothesis that behavioral dysfunction in children with sensory processing disorders is related to dysfunction in brain function
All items on the test were reviewed by an expert panel of five judges to determine if they could be categorized into the four-quadrant model of the original sensory profile
The findings suggest that behavioral response axis of Dunn’s model may not reflect a construct with ordinal range, suggesting that behavior response patterns may not reflect a spectrum of characteristic styles
Summary
Dunn’s Four Quadrant Model of Sensory Processing is based on two constructs: neurological thresholds and behavioral response. The similarities in the verbiage of Dunn’s behavioral response aspect of sensory processing and the introversion/extraversion aspects of Eysenck’s personality model warrant exploration of whether the latter can be used to validate the former Sato, in his revision of the Eysenck Personality Questionnaire to create a brief version, summarized the Eysenck’s research on the personality dimensions of introversion and extroversion:. In 2007, Davies and Gavin tested the hypothesis that behavioral dysfunction in children with sensory processing disorders is related to dysfunction in brain function To do this, they used the P50 gating paradigm with children with SPD, as verified by Dunn’s Sensory Profile, and typically developing children. We compared variation in threshold to variation in somatosensory event related potentials and sensory gating
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