Validity Evidences of the Inventory of Personality Organization - Brasil (IPO-Br): Its Relation with the Five-Factor Model of Personality

Silveira, Liége Barbieri; Oliveira, Sérgio Eduardo Silva de; Bandeira, Denise Ruschel

doi:10.9788/TP2018.4-07Pt

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Article • Trends Psychol. 26 (4) • Oct-Dec 2018 • https://doi.org/10.9788/TP2018.4-07Pt copy

Validity Evidences of the Inventory of Personality Organization - Brasil (IPO-Br): Its Relation with the Five-Factor Model of Personality

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

The aim of the present study was to investigate evidences of convergent and incremental validity for the Brazilian version of the Inventory of Personality Organization (IPO-Br), an instrument that evaluates pathological functioning of personality. The sample included 170 individuals of which 61.2% were patients attending psychiatric or psychological treatment. The average difference for clinical and non-clinical groups were compared, and correlational and multivariate analyses were performed between the IPO-Br and of the Bateria Fatorial da Personalidade, a Brazilian measure of the Five-Factor Model (FFM). Moderate to high positive correlations were found between the IPO-Br factors and the Neuroticism dimension. In addition, the FFM explained between 27 and 68% of the variance of the IPO-Br factors. The IPO-Br was also able to differentiate people with and without psychopathological indicators, as well as capable to increment the explanation of psychiatric severity beyond the explanation given by the FFM, indicating adequate evidences of validity and clinical utility of the IPO-Br.

Keywords:
Personality; pathology of personality; Five-Factor Model; evidences of validity

	No. of items	Non-clinical	Clinical	d	d 95%CI	Total	α
	No. of items	M (SD)	M (SD)	d	Low \| Upp	M (SD)	α
IPO-Br
Instability of the Self and Others	30	2.06 (0.62)	2.71 (0.80)	0.91	0.56\|1.21	2.46 (0.80)	0.94
Instability of Behavior	15	1.89 (0.60)	2.33 (0.77)	0.64	0.31\|0.94	2.16 (0.73)	0.87
Instability of Goals	02	1.88 (0.88)	2.50 (1.19)	0.59	0.26\|0.89	2.26 (1.12)	0.77
Psychosis	10	1.49 (0.40)	2.03 (0.95)	0.74	0.37\|1.01	1.82 (0.83)	0.88
Self-Directed Aggression	08	1.39 (0.26)	1.77 (0.76)	0.66	0.30\|0.93	1.62 (0.64)	0.73
Distortion of Moral Values	10	2.05 (0.57)	2.23 (0.65)	0.29	-0.02\|0.60	2.16 (0.62)	0.72
Sadistic Aggression	07	1.19 (0.33)	1.32 (0.46)	0.32	0.00\|0.62	1.27 (0.41)	0.74
BFP
Neuroticism	29	3.10 (0.93)	4.18 (1.08)	1.07	0.73\|1.38	3.76 (1.15)	0.92
Agreeableness	28	5.44 (0.54)	5.19 (0.74)	-0.39	-0.68\|-0.06	5.29 (0.68)	0.79
Conscientiousness	21	4.82 (0.63)	4.74 (0.98)	-0.10	-0.40\|0.22	4.77 (0.86)	0.82
Extroversion	25	4.09 (0.81)	3.91 (1.08)	-0.19	-0.49\|0.13	3.99 (0.99)	0.88
Openness	23	4.27 (0.66)	4.22 (0.74)	-0.07	-0.38\|0.24	4.25 (0.72)	0.68
SRQ-20
Level of Psychopathology	20	3.58 (3.19)	8.90 (5.02)	1.26	0.87\|1.54	6.58 (5.05)	0.88

	ISO	IB	IG	PSI	SDA	DMV	SA
Neuroticism	0.75^ p <.01.	0.64^ p <.01.	0.37^ p <.01.	0.50^ p <.01.	0.44^ p <.01.	0.54^ p <.01.	0.43^ p <.01.
Agreeableness	-0.46^ p <.01.	-0.55^ p <.01.	-0.15	-0.41^ p <.01.	-0.47^ p <.01.	-0.53^ p <.01.	-0.54^ p <.01.
Conscientiousness	-0.23^ p <.01.	-0.26^ p <.01.	-0.02	-0.27^ p <.01.	-0.36^ p <.01.	-0.26^ p <.01.	-0.24^ p <.01.
Extroversion	-0.14	-0.12	0.06	-0.10	-0.09	-0.20^* * p <.05;	0.00
Openness	-0.04	-0.07	-0.26^ p <.01.	-0.12	-0.09	-0.07	-0.01

	ISO	IB	IG	PSI	SDA	DMV	SA
R2	0.68	0.59	0.27	0.43	0.47	0.42	0.42
F	23.17	15.69	4.52	9.03	10.82	8.15	8.68
Vulnerability (N1)	0.28^* ***** p ≤.001.	0.19^* * p ≤.05;	0.10	0.10	-0.02	0.22^* * p ≤.05;	0.02
Instability (N2)	0.12	0.22^ p ≤.01;	0.11	0.17^* * p ≤.05;	0.16^* * p ≤.05;	0.15	0.05
Passivity (N3)	-0.08	-0.11	0.11	-0.02	-0.35^* ***** p ≤.001.	-0.02	0.08
Depression (N4)	0.28^* ***** p ≤.001.	0.19^* * p ≤.05;	0.06^ p ≤.01;	0.28^ p ≤.01;	0.39^* ***** p ≤.001.	0.02	0.21^* * p ≤.05;
Kindness (A1)	--	-0.03	0.12	--	0.02	-0.13	-0.16^* * p ≤.05;
Pro-Sociability (A2)	-0.03	-0.18^ p ≤.01;	-0.19^* * p ≤.05;	-0.11	-0.26^* ***** p ≤.001.	-0.15^* * p ≤.05;	-0.24^* ***** p ≤.001.
Trust in People (A3)	-0.13^* * p ≤.05;	-0.11	0.08^ p ≤.01;	-0.21^ p ≤.01;	0.04	-0.18^* * p ≤.05;	-0.15^* * p ≤.05;
Competence (C1)	-0.22^* * p ≤.05;	-0.04	--	-0.06	-0.27^* * p ≤.05;	-0.06	0.06
Weighting (C2)	-0.12^* * p ≤.05;	-0.14^ p ≤.01;	--	-0.22^* ***** p ≤.001.	-0.08	-0.06	-0.15^* * p ≤.05;
Engagement (C3)	0.18^ p ≤.01;	--	0.01	--	-0.06	--	--
Level of Communication(E1)	0.05	-0.06	-0.04	--	--	0.06	--
Pride (E2)	0.14^* * p ≤.05;	0.15	0.04	-0.12	0.18^* * p ≤.05;	0.08	0.08
Dynamism (E3)	-0.02	-0.05	--	0.25^ p ≤.01;	0.01	-0.07	0.03
Social Interactions (E4)	-0.06	-0.04	-0.03	-0.11	-0.03	-0.12	-0.03
Openness to Ideas (O1)	0.07	0.07	--	0.24^* ***** p ≤.001.	--	0.06	0.08
Liberalism (O2)	--	--	0.13	--	--	--	--
Search for Novelties (O3)	--	--	0.19^ p ≤.01;	-0.15^* * p ≤.05;	--	--	--

Step 1: BFP Step 2: IPO-Br		Step 1: IPO-Br Step 2: BFP			Total R	Adj. R²	Significant predictors (β) after Step 2
R ²	ΔR²	R ²	ΔR²
0.51^* ***** p ≤.001.	0.13^* ***** p ≤.001.	0.52^* ***** p ≤.001.	0.12^* ***** p ≤.001.	0.64^* ***** p ≤.001.		0.61^* ***** p ≤.001.	Neuroticism (0.38^* *** p ≤.001. ) Instability of the Self and Others (0.25^ p ≤.01; ) Self-Directed Aggressiveness (0.24^ ** p ≤.01; ) Sadistic Aggression (-0.17^* * p ≤.05; ) Extroversion (-0.17^ p ≤.01; )

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