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Table 3 Rotated pattern matrix for four-factor solution from exploratory factor analysis

From: A quantitative measure of restricted and repetitive behaviors for early childhood

Item heading Repetitive motor Ritual and routine Restricted Self-directed
Torso 0.93 0.04 −0.01 0.01
Head 0.88 −0.02 −0.01 −0.03
Legs 0.85 −0.06 0.03 −0.05
Arms, hand, or fingers 0.84 0.07 0.03 −0.04
Arms/hand/fingers on surfaces 0.81 0.00 0.02 0.03
Locomotion 0.79 0.00 0.00 −0.02
Object use 0.72 −0.11 0.05 0.03
Vocalizations 0.70 0.01 0.09 0.06
Mouthing objects 0.50 0.04 −0.03 0.15
Play −0.02 0.78 −0.02 0.00
Daily routine −0.04 0.73 −0.04 0.06
Change in others 0.01 0.66 −0.02 0.03
Mealtime 0.06 0.61 −0.01 0.03
New places −0.09 0.58 0.10 0.05
Bedtime 0.05 0.54 0.06 −0.06
Social interactions −0.05 0.53 0.10 0.09
Interruptions 0.02 0.40 0.13 0.13
Visual inspection −0.03 −0.08 0.76 0.09
Fascination with movement 0.02 −0.13 0.71 0.18
Interest in parts of objects −0.04 −0.08 0.67 0.16
Limited and intense interest 0.04 0.05 0.48 0.04
Stillness −0.01 0.10 0.47 −0.14
Sensory interests 0.09 0.13 0.45 −0.01
Media use −0.01 0.22 0.40 −0.08
Object attachment −0.02 0.14 0.40 −0.02
Placement of objects 0.04 0.32 0.35 −0.19
Arranging toys 0.13 0.08 0.32 −0.18
Hits self with object 0.01 0.05 −0.03 0.73
Hits self with body part 0.09 0.08 −0.20 0.72
Hits self against surface 0.01 0.01 0.02 0.63
Pulls own hair −0.02 0.14 0.04 0.32
Scratches, pinches, or pokes self 0.01 −0.09 0.20 0.32
Bites self −0.05 0.02 0.10 0.19
Skin picking 0.00 0.11 0.07 0.14
  1. Italics signify items belonging to a common factor