Table 6.

Cohen's Kappa values for intra-rater reliability results.

	Study 1	Study 2	Study 3	Study 4
Coder ID	C14	C10	C10	C13
Number of videos	26	28	30	30
Overall	0.90	0.95	0.96	0.87
Facial Emotional Display	0.83	0.86	0.91	0.77
Verbal Emotional Display	0.99	0.97	0.99	0.83
Social Communication	0.74	0.86	0.88	0.72
Interactions with animals and objects	0.81	0.86	0.82	0.74
Problem Behaviors	0.98	0.97	0.97	0.98