Validation of the Impulsive/Premeditated Aggression Scale in Mexican psychiatric patients

Romans, Laura; Fresán, Ana; Sentíes, Héctor; Sarmiento, Emmanuel; Berlanga, Carlos; Robles-García, Rebeca; Tovilla-Zarate, Carlos-Alfonso

doi:10.3109/08039488.2014.994033

Cited by 7 publications

(12 citation statements)

References 30 publications

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“…In the analysis of the explained variance described by other authors, we have observed that the IA factor can explain between 12.9% ( 41 ) and 24% ( 39 ) of the total IPAS variance; and that the PM factor can account for between 10.3% ( 42 ) and 15.6% ( 37 ) of the total IPAS variance. We have obtained higher values of explained variance (34.3% for the IA factor and 15.7% for the PM factor).…”

Section: Discussionmentioning

confidence: 54%

Validation of the Portuguese Version of Impulsive–Premeditated Aggression Scale in an Inmate Population

et al. 2018

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Aggression is one of the core symptoms of antisocial personality disorder (ASPD) with therapeutic and prognostic relevance. ASPD is highly prevalent among inmates, being responsible for adverse events and elevated direct and indirect economic costs for the criminal justice system. The Impulsive/Premeditated Aggression Scale (IPAS) is a self-report instrument that characterizes aggression as either predominately impulsive or premeditated. This study aims to determine the validity and reliability of the IPAS in a sample of Portuguese inmates. A total of 240 inmates were included in the study. A principal component factor analysis was performed so as to obtain the construct validity of the IPAS impulsive aggression (IA) and premeditated aggression (PM) subscales; internal consistency was determined by Cronbach’s alpha coefficient; convergent and divergent validity of the subscales were determined analyzing correlations with the Barratt Impulsiveness scale, 11th version (BIS-11), and the Psychopathic Checklist Revised (PCL-R). The rotated matrix with two factors accounted for 49.9% of total variance. IA subscale had 11 items and PM subscale had 10 items. The IA and PM subscales had a good Cronbach’s alpha values of 0.89 and 0.88, respectively. The IA subscale is correlated with BIS-11 attentional, motor, and non-planning impulsiveness dimensions (p < 0.05). The PM subscale is correlated with BIS-11 attentional, motor impulsiveness dimensions (p < 0.05). The PM subscale is correlated with PCL-R interpersonal, lifestyle, and antisocial dimensions (p < 0.05). The IA subscale is not correlated with PCL-R. The Portuguese translated version of IPAS has adequate psychometric properties, allowing the measurement of impulsive and premeditated dimensions of aggression.

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Section: Discussionmentioning

confidence: 54%

Validation of the Portuguese Version of Impulsive–Premeditated Aggression Scale in an Inmate Population

et al. 2018

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“…9,13,14 In order to assess these two types of aggression, Stanford et al 3 developed the Impulsive/Premeditated Aggression Scale (IPAS), which equally assesses the two aggressive patterns. The IPAS has been translated into Chinese, 15 Portuguese, 16,17 Spanish 18 and Dutch. 19 Research testing the factorial structure of the scale 4,[18][19][20] identified the expected main factors impulsive aggression (IA) and premeditated aggression (PM) and no significant differences in the distribution of the items across dimensions (Table 1).…”

Section: Introductionmentioning

confidence: 99%

“…The IPAS has been translated into Chinese, 15 Portuguese, 16,17 Spanish 18 and Dutch. 19 Research testing the factorial structure of the scale 4,[18][19][20] identified the expected main factors impulsive aggression (IA) and premeditated aggression (PM) and no significant differences in the distribution of the items across dimensions (Table 1). Overall, in previous research, the scale demonstrated good psychometric properties across community, 20-22 forensic 4,23-25 and clinical samples.…”

Section: Introductionmentioning

confidence: 99%

“…Overall, in previous research, the scale demonstrated good psychometric properties across community, 20-22 forensic 4,23-25 and clinical samples. 18,26,27 Therefore, following previous research, the aim of Therefore, not all participants may be accounted for in a categorical scoring, but rather only those scoring 4 or 5 in the items of each subscale. The IA and PM scales have demonstrated acceptable to high internal consistency across the studies.…”

Section: Introductionmentioning

confidence: 99%

“…The IA and PM scales have demonstrated acceptable to high internal consistency across the studies. 3,4,14,[18][19][20]22,[25][26][27][29][30][31][32] The Portuguese version of the IPAS was first translated by two independent researchers. Both translations were compared, and differences analyzed by a senior researcher.…”

Section: Introductionmentioning

confidence: 99%

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Psychometric properties of the Impulsive/Premeditated Aggression Scale in Portuguese community and forensic samples

Cruz

Pasion

Rodrigues

et al. 2019

Trends Psychiatry Psychother.

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Introduction Aggression can be defined according to impulsive or premeditated features. Impulsivity is defined as an uncontrolled and unplanned form of aggression. On the contrary, premeditation requires planning and is goal-oriented. Objective The purpose of this study was to validate the basic psychometric properties of the Impulsive/Premeditated Aggression Scale (IPAS) into European Portuguese. The scale evaluates aggression according to impulsive and premeditated features, which are considered the predominant forms of aggressive behavior, and can be used in community, forensic and clinical settings. Methods Participants from a community sample (n = 957; 424 male) and incarcerated individuals (n = 115, all male) completed the IPAS. Results Internal consistency and reliability indicated that the scale has good psychometric properties in both samples. Data from a principal component analysis (PCA) demonstrated similarities to previous structures reported in the literature. Conclusions The scale demonstrated to be sensitive to the bimodal classification of aggression in community and forensic samples, indicating its utility in the characterization of aggressive patterns.

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Versatility and exploratory psychometric properties of the Impulsive/Premeditated Aggression Scale (IPAS): A review

Cruz

Rodrigues

Rundle

et al. 2019

Aggression and Violent Behavior

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Aggression has different conceptualizations and can be behaviorally expressed in diverse ways. Designed to evaluate impulsive and premeditated forms of aggression, the Impulsive/Premeditated Aggression Scale (IPAS; Stanford et al., 2003) is a 30 item self-report questionnaire. The aim of the present study was to explore IPAS versatility in different psychological settings by reviewing and examining the exploratory psychometric properties of the IPAS impulsive and premeditated subscales, across different samples and cultural backgrounds. Fifty-two articles including demographic or psychometric information (internal consistency, factor analysis, validity, reliability) were retrieved. It is suggested that the IPAS is reliable across different cultures, samples and scoring techniques. The two subscales (Impulsive and Premeditated) show acceptable internal consistency. Also, IPAS factors seem to be constant both in clinical and non-clinical samples. The IPAS appears to be a clinically useful instrument for differentiating between subtypes of aggressive behavior, to support risk assessment evaluations, pretrial decisions and better treatment and rehabilitation strategies in offenders and clinical relevant samples.

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Validation of the Impulsive/Premeditated Aggression Scale in Mexican psychiatric patients

Abstract: The IPAS is an adequate instrument, which might be used to differentiate the type of aggressive behavior in Mexican psychiatric patients.

Cited by 7 publications

References 30 publications

Validation of the Portuguese Version of Impulsive–Premeditated Aggression Scale in an Inmate Population

Validation of the Portuguese Version of Impulsive–Premeditated Aggression Scale in an Inmate Population

Psychometric properties of the Impulsive/Premeditated Aggression Scale in Portuguese community and forensic samples

Versatility and exploratory psychometric properties of the Impulsive/Premeditated Aggression Scale (IPAS): A review

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