Figure 3.

The Sniff Response Reflects Social Impairment in ASD

(A) The results of a leave-one-out classification scheme based on sniff-response parameters (ASD in orange, TD in green). The graph reveals one false positive classification and six false negatives.

(B) Correlation of sniff duration ratio with autism severity (ADOS) (overlapping ADOS values were jittered to prevent overlay). Each dot is a subject. Error bars represent SEM.

(C) Correlation of sniff duration ratio with the social affect component of the ADOS test (overlapping ADOS values were jittered to prevent overlay). Each dot is a subject. Error bars represent SEM.

(D) Correlation of sniff duration ratio with the motor skills score of the VABS test (overlapping VABS values were jittered to prevent overlay). Each dot is a subject. Error bars represent SEM.

(E–G) Correlation of sniff duration ratio with a battery of motor tests: finger tapping test (FTT), modified pegboard test (MPT), and strength of grip (SOG).