Table 2.
Cronbach’s α for subscales of the BAPQ and GSQ.
| Questionnaire/subscale | N items | Cronbach’s α (discovery sample) | Cronbach’s α (replication sample) |
|---|---|---|---|
| BAPQ | 36 | 0.95 | 0.94 |
| Aloof personality | 12 | 0.92 | 0.94 |
| Pragmatic language | 12 | 0.85 | 0.85 |
| Rigid personality | 12 | 0.90 | 0.91 |
| GSQ | 40 | 0.92 | 0.90 |
| Visual | 6 | 0.70 | 0.69 |
| Auditory | 5 | 0.70 | 0.68 |
| Tactile | 6 | 0.64 | 0.54 |
| Olfactory | 6 | 0.49 | 0.52 |
| Gustatory | 5 | 0.65 | 0.54 |
| Proprioception | 6 | 0.72 | 0.62 |
| Vestibular | 6 | 0.66 | 0.61 |
BAPQ: Broad Autism Phenotype Questionnaire; GSQ: Glasgow Sensory Questionnaire.
The auditory and gustatory GSQ subscales contained five items due to the removal of items that overlapped with the rigid QAT construct (see section “Methods” for detail).