Table 3.

Group Differences on IS Items

	Group	Mean	SD	t (df=183)	p
Machines/how things work	NT	0.58	0.72	0.78	.436
	HF-ASD	0.49	0.71
Mechanical systems/mechanical actions	NT	0.34	0.62	1.29	.198
	HF- ASD	0.23	0.55
Numbers/numerical information	NT	0.26	0.55	−1.32	.190
	HF-ASD	0.38	0.66
Strongly attached to a particular item or object	NT	0.18	0.45	−3.31	.001**
	HF-ASD	0.50	0.75
Seeks particular sensations or sensory experiences	NT	0.09	0.33	−4.01	<.001**
	HF-ASD	0.44	0.69
Factual information	NT	0.25	0.59	−3.48	.001**
	HF-ASD	0.61	0.77
Animals	NT	0.46	0.74	−0.15	.879
	HF-ASD	0.48	0.71
Insects	NT	0.09	0.29	−0.98	.328
	HF- ASD	0.16	0.51
Dinosaurs	NT	0.12	0.43	−1.68	.095
	HF-ASD	0.27	0.67
People	NT	0.53	0.70	4.83	<.001**
	HF-ASD	0.15	0.35
Collecting/hoarding things	NT	0.29	0.56	−2.78	.006**
	HF-ASD	0.59	0.81
Arts/crafts	NT	0.47	0.68	0.95	.344
	HF-ASD	0.38	0.69
Music	NT	1.04	0.66	2.32	.021
	HF-ASD	0.81	0.67
Television/movies	NT	0.93	0.68	−1.49	.138
	HF- ASD	1.10	0.79
Vehicles/transportation	NT	0.37	0.63	−0.62	.537
	HF-ASD	0.43	0.71
Building things/construction	NT	0.66	1.30	0.40	.688
	HF-ASD	0.60	0.77
Time	NT	0.17	0.38	−1.52	.130
	HF-ASD	0.27	0.51
Measuring/measurement	NT	0.12	0.32	0.32	.746
	HF-ASD	0.10	0.38
Geography/maps	NT	0.20	0.40	−2.03	.044
	HF-ASD	0.38	0.69
Schedules	NT	0.06	0.25	−1.38	.169
	HF-ASD	0.13	0.34
Calendars/dates	NT	0.08	0.27	−1.75	.081
	HF-ASD	0.19	0.52
Math/counting/calculating	NT	0.21	0.44	−1.86	.064
	HF-ASD	0.37	0.63
Computers/computing/computer science	NT	0.50	0.58	−1.80	.074
	HF-ASD	0.67	0.67
Sports	NT	0.88	0.67	6.10	<.001**
	HF-ASD	0.31	0.59
Astronomy/planets	NT	0.21	0.59	−0.78	.436
	HF-ASD	0.27	0.52
Reading/writing	NT	0.70	0.67	0.17	.865
	HF-ASD	0.68	0.76
Religion	NT	0.49	0.70	1.94	.054
	HF-ASD	0.30	0.58
Rocks/minerals/geology	NT	0.18	0.51	−0.23	.816
	HF-ASD	0.20	0.50
Politics/government	NT	0.32	0.47	0.39	.696
	HF-ASD	0.28	0.58
Physics	NT	0.25	0.59	0.26	.795
	HF-ASD	0.23	0.48
Psychology	NT	0.14	0.35	0.61	.540
	HF-ASD	0.11	0.39
History/philosophy	NT	0.37	0.69	0.48	.631
	HF-ASD	0.32	0.63
Language/linguistics	NT	0.18	0.39	−0.99	.324
	HF-ASD	0.26	0.55
Object or item motions	NT	0.10	0.42	−2.17	.031
	HF-ASD	0.26	0.50
Plants/gardening/farming	NT	0.13	0.34	0.24	.813
	HF-ASD	0.12	0.35
Toys	NT	0.63	0.80	−0.52	.598
	HF-ASD	0.70	0.85
Playing games with others	NT	0.58	0.68	0.18	.853
	HF-ASD	0.56	0.71
Playing games alone	NT	0.76	0.65	−3.00	.003**
	HF-ASD	1.10	0.82
Cartoons/animation	NT	0.39	0.59	−4.15	<.001**
	HF-ASD	0.85	0.83
Building/architecture	NT	0.21	0.50	0.79	.430
	HF-ASD	0.16	0.43
Other (not listed)	NT	0.14	0.35	−2.66	.009**
	HF-ASD	0.35	0.60

^**Group difference is significant after FDR correction (q<.05).