Reliability, validity, and factorial structure of the Turkish version of the Structured Inventory of Malingered Symptomatology (Turkish SIMS)

Figures & data

Table 1. Sociodemographic characteristics of the participants (n = 103).

Age		34.89 ± 12.29
		N	%
Educational status	Elementary school	19	18.4
	Middle school	30	29.1
	High school	33	32
	University	21	20.4
Employment	Regular Work order	33	32
	Irregular Work order	40	38.8
	Unemployed	30	29.1
Marital status	Single	50	48.5
	Married	27	26.2
	Divorced	26	25.2
Self-harm	Present	38	39.6
	Absent	65	63.1

Table 2. Psychiatric history of the participants.

	n	%
Psychiatric treatment history
None	13	12.6
Affective disorder	36	35
Psychotic disorder	32	31.1
Bipolar disease	10	9.7
Substance use	12	11.7
Hospitalization
Not treated	12	11.7
Never hospitalized	33	32
Hospitalized once	21	20.4
Multiple hospitalizations	37	35.9
Opinion on having a psychiatric disorder
Claims having a psychiatric disorder	60	58.3
Claims healthy	37	35.9
Not sure	6	5.8
Family psychiatric history
Present	29	28.2
Not present	74	71.8
Substance usage history
Present	40	38.8
Not present	63	61.2

Table 3. SIMS subscale means, standard deviations, Cronbach’s alpha, test–retest Cronbach’s alphas.

SIMS subscales	M	SD	α	Test–retest α
Psychosis (P)	4.94	4.19	0.87	0.97
Neurologic impairment (NI)	5.85	4.50	0.88	0.98
Amnestic disorders (AM)	6.12	4.91	0.71	0.67
Low intelligence (LI)	6.00	2.07	0.32	0.83
Affective disorder (AF)	6.77	3.14	0.69	0.96
TOTAL SIMS	29.70	16.29	0.93	0.95

Note: SIMS: Structured Inventory of Malingered Symptomatology; M: mean; SD: standard deviation.

Table 4. Correlations between the SIMS Total and Subscales Scores and total scores of M-FAST, BAI, and BDI

		M-FAST total	BAI total	BDI total
P	r p	0.792 0.000**	0.543 0.000**	0.539 0.000**
NI	r p	0.777 0.000**	0.547 0.000**	0.591 0.000**
AM	r p	0.687 0.000**	0.523 0.000**	0.524 0.000**
LI	r p	0.448 0.000**	0.185 0.061	0.213 0.031*
AF	r p	0.691 0.000**	0.646 0.000**	0.687 0.000**
TOTAL SIMS	r p	0.816 0.000**	0.597 0.000**	0.620 0.000**

Note: SIMS: Structured Inventory of Malingered Symptomatology; M-FAST: Miller Forensic Assessment of Symptoms Test (M-FAST); BAI: Beck Anxiety Inventory; BDI: Beck Depression Inventory

*Correlation is significant at the .05 level (two-tailed).

**Correlation is significant at the .01 level (two-tailed).

Table 5. Factor analysis: total variance explained and component matrix.

Explained variance	Total	Factor 1	Factor 2	Factor 3	Factor 4
	39.8%	27.3%	4.9%	4.2%	3.3%
SIMS 1		.608	.564
SIMS 2				−.548
SIMS 3		.437	.595
SIMS 4				−.510
SIMS 5		.577
SIMS 6
SIMS 7
SIMS 8			.593
SIMS 9		.436			.553
SIMS 10					.463
SIMS 11					.650
SIMS 12		.615	.508
SIMS 13		.659	.584
SIMS 14
SIMS 15		.637	.444
SIMS 16				−.601
SIMS 17		.562
SIMS 18		.655	.456
SIMS 19				.464
SIMS 20		.729
SIMS 21			.569
SIMS 22		.719
SIMS 23
SIMS 24
SIMS 25		.640	.592
SIMS 26		.426
SIMS 27		.782	.467
SIMS 28			.561
SIMS 29		.411	.426
SIMS 30		.635			.407
SIMS 31		.701	.508
SIMS 32		.563
SIMS 33		.676	.557
SIMS 34		.444	.537
SIMS 35		.701	.505
SIMS 36		.630	.536
SIMS 37		.790	.463
SIMS 38		.623	.592
SIMS 39		.708	.549
SIMS 40			.562
SIMS 41		.494	.423
SIMS 42		.504	.462
SIMS 43		.480			.415
SIMS 44		.649	.436
SIMS 45		.604	.478
SIMS 46		−.429	−.680
SIMS 47		.703	.524
SIMS 48		.613	.548
SIMS 49		.594	.573
SIMS 50		.760	.401
SIMS 51		.576
SIMS 52		.485
SIMS 53		.466	.409
SIMS 54
SIMS 55				.594
SIMS 56
SIMS 57		.559	.534
SIMS 58
SIMS 59		.683	.448
SIMS 60		.731
SIMS 61
SIMS 62			.738
SIMS 63			.403		.445
SIMS 64		.632			.457
SIMS 65		.533	.448
SIMS 66		.490
SIMS 67			.427
SIMS 68
SIMS 69		.430	.680
SIMS 70		.739
SIMS 71		.565
SIMS 72				.497
SIMS 73			.447
SIMS 74		.693	.502
SIMS 75					.608