Two assessments to evaluate imagery ability: translation, test-retest reliability and concurrent validity of the German KVIQ and Imaprax

Table 8 Principal factors solution with promax rotation of the KVIQ-G 20

Subscale	Movements	KVIQ-G 20 items	Pattern matrix		Structure matrix		Communality
Subscale	Movements	KVIQ-G 20 items	Factor 1	Factor 2	Factor 1	Factor 2	Communality
Kin	Shoulder shrugging	2 K	0.93		0.90	0.24	0.82
	Knee extension	7Knd	0.90		0.87	0.23	0.85
	Neck flexion / extension	1 K	0.87		0.86	0.31	0.77
	Hip abduction	8 Kd	0.86		0.86	0.32	0.75
	Thumb-fingers opposition	5 Kd	0.85		0.85	0.31	0.73
	Foot tapping	9 Knd	0.84		0.86	0.33	0.78
	Lift arm completely	3 Knd	0.82		0.84	0.34	0.75
	Elbow flexion / extension	4 Kd	0.81		0.84	0.37	0.73
	Forward trunk flexion	6 K	0.80		0.84	0.39	0.71
	Foot external rotation	10 Kd	0.79		0.81	0.39	0.85
Vis	Foot external rotation	10 Vd		0.91	0.28	0.87	0.86
	Hip abduction	8 Vd		0.87	0.23	0.83	0.71
	Elbow flexion / extension	4 Vd		0.86	0.34	0.86	0.78
	Thumb-fingers opposition	5 Vd		0.84	0.35	0.85	0.73
	Forward trunk flexion	6 V		0.80	0.27	0.79	0.63
	Neck flexion / extension	1 V		0.78	0.40	0.82	0.69
	Knee extension	7 Vnd		0.75	0.37	0.81	0.81
	Foot tapping	9 Vnd		0.73	0.33	0.78	0.73
	Shoulder shrugging	2 V		0.69	0.32	0.73	0.60
	Lift arm completely	3 Vnd		0.68	0.34	0.74	0.76

Legend: Words in bold in the movement column indicate movements that belong to the short KVIQ-G version (KVIQ-G 10). KVIQ-G 20 = Kinaesthetic and Visual Imagery Questionnaire German version - long version (20 items), Vis = visual subscale, Kin = kinaesthetic subscale, d = dominant side of the body, nd = non-dominant side of the body.

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