Table 3.
Item factor loadings and factor correlations from exploratory factor analysis (N=238)
| Dimensions | |||
|---|---|---|---|
| Basic SOC | Interaction Quality | RRB | |
| Social affect | |||
| Descriptive gestures | .83 | ||
| Unusual eye contact | .71 | ||
| Facial expressions | .85 | ||
| Shared enjoyment | .64 | .34 | |
| Quality of social overtures | .48 | .49 | |
| Conversation | .54 | ||
| Amount of reciprocal social communication | .37 | .70 | |
| Overall quality of rapport | .54 | .37 | |
| Quality of social response | .54 | .47 | |
| RRBs | |||
| Stereotyped speech | .97 | ||
| Mannerisms | .41 | ||
| Excessive interest | .72 | ||
| Sensory interest | (.15) | ||
| Factor correlations | Basic SOC | Interaction Quality | RRB |
|---|---|---|---|
| Basic SOC | 1 | ||
| Interaction Quality | .70*** | 1 | |
| RRB | .54** | .54** | 1 |
Note: ADOS=autism diagnostic observation schedule, SOC = social-communication, RRB = restricted and repetitive behavior. All parameters are completely standardized. Factor loadings larger than .32 are shown to enhance interpretability (exception for “Sensory interest” which had no significant loading to any factor). Bolded: Clear loading to one factor.
*p<.05
**
p<.01
***
p<.001.