Fig. 1

Models assessed using confirmatory factor analysis in Study 2. Squares represent the (observed) items and ellipses represent the latent variables (note that only two of the six items for each lower-order factor are represented, and that item uniqueness is omitted, for clarity and space). SOC social interactions, COM communication, CAM social camouflage, REP repetitive behaviours, RIG cognitive rigidity, SEN sensory sensitivity