Test of Reliability and Validity of Impulsiveness Scale Among Married Chinese

Figures & data

Table 1 Information on Demographic Characteristics of the Sample (N=664)

Variable	Sample 1 (N=664)	Sample 2 (N=758)	Total (N=1422)
Sex
Man	368 (55.4%)	330 (43.5%)	698 (49.1%)
Woman	296 (44.6%)	428 (56.5%)	724 (50.9%)
Age
Mean value (standard deviation)	46.10 (0.18)	45.75 (0.17)	45.90 (0.12)
Marriage situation
Married	598 (90.1%)	677 (89.3%)	1275 (89.7%)
Divorced	35 (5.3%)	46 (6.1%)	81 (5.7%)
Remarried	19 (2.9%)	18 (2.3%)	37 (2.6%)
Widowed	12 (1.8%)	17 (2.2%)	29 (2.0%)
Educational background
Primary school and below	90 (13.6%)	99 (13.1%)	189 (13.3%)
Junior high school	260 (39.2%)	269 (35.5%)	529 (37.2%)
High school, technical secondary school or technical school	158 (23.8%)	178 (23.8%)	336 (23.6%)
Junior college, night university or electricity university	80 (12.0%)	92 (12.1%)	172 (12.1%)
Bachelor degree or above	76 (11.5%)	120 (15.8%)	196 (13.8%)

Table 2 Correlation Coefficients Between Items and Total Score (N=664)

Item	High Group (N=179, M±SD)	Low Group (N=179, M±SD)	C.R. Value	Correlation Coefficients (N=664)	α if Deleted
1	2.46±0.80	1.08±0.35	21.18***	0.653**	0.769
2	2.57±0.78	1.20±0.50	19.91***	0.643**	0.773
3	2.55±0.77	1.34±0.58	16.78***	0.615**	0.777
4	2.46±0.78	1.10±0.40	20.81***	0.614**	0.777
5	2.51±0.78	1.10±0.35	21.96***	0.666**	0.766
6	2.73±0.71	1.12±0.37	26.88***	0.690**	0.763
7	2.59±0.76	1.17±0.42	21.85***	0.667**	0.767
8	2.58±0.83	1.40±0.62	15.32***	0.582**	0.785

Notes: **p<0.01, ***p<0.001.

Abbreviations: C.R. Value, critical ratio value.

Table 3 Factor Loadings of the BBIS (N=664)

Item	Impulsive Behavior	Poor Self-Regulation	Common Degree
Item 2	0.817	0.096	0.676
Item 3	0.791	0.080	0.632
Item 7	0.811	0.143	0.677
Item 8	0.786	0.025	0.618
Item 1	0.107	0.821	0.678
Item 4	0.036	0.823	0.678
Item 5	0.081	0.862	0.750
Item 6	0.131	0.845	0.732

Notes: The bold text marks the dimension to which this item belongs and the factor loadings for this item.

Abbreviations: BBIS, Brief Barratt impulsiveness Scale.

Table 4 CFA Fit Statistics for Competing Models (N=758)

	χ^2	df	χ^2/df	RFI	CFI	NFI	IFI	RMSEA	PNFI	PCFI
Model 1	403.511	18	22.417	0.724	0.828	0.823	0.829	0.168	0.529	0.533
Model 2	41.676	18	2.315	0.971	0.989	0.982	0.990	0.042	0.631	0.636
Model 3	395.029	15	26.335	0.676	0.901	0.826	0.832	0.183	0.443	0.445

Notes: Model 1 represents the single-factor model, Model 2 represents the two-factor model, and Model 3 represents the three-factor model.

Abbreviations: CFA, confirmatory factor analysis; χ², chi square; df, degrees of freedom; RFI, relative fit index; CFI, comparative fit index; NFI, normed fit index; IFI, incremental fit index; RMSEA, root mean square error of approximation; PNFI, parsimony normed fit index; PCFI, parsimony comparative fit index.

Table 5 Correlations of BBIS and Three Subscales (N=758)

	Square Roots of AVE	1	2	3	4	5	6
(1) Impulsiveness		-
(2) Poor Self-Regulation	0.80	0.740**	-
(3) Impulsive Behavior	0.81	0.824**	0.228**	-
(4) Trait Anger		0.338**	0.198**	0.394**	-
(5) Marital Quality		−0.194**	−0.236**	−0.083*	−0.263**	-
(6) Emotional responsiveness		0.417**	0.240**	0.402**	0.659**	−0.262**	-
Mean		14.75	6.38	8.37	17.94	37.41	16.73
Standard deviation		4.178	2.431	2.888	5.335	8.260	16.358
Range		8–27	4–16	4–16	10–40	6–45	0–84

Notes: *p<0.05, **p<0.01.

Abbreviations: BBIS, Brief Barratt Impulsiveness Scale; AVE, average variance extracted.

Table 6 Measurement Invariance Across Gender of the BBIS (N=758)

Model	S-Bχ^2	df	TLI	CFI	NFI	RMSEA (90%CI)	SRMR	∆CFI	∆RMSEA
M1	72.529	42	0.982	0.986	0.969	0.031 (0.018–0.043)	0.330
M2	79.823	50	0.985	0.987	0.965	0.028 (0.016–0.039)	0.331	0.001	0.003
M3	80.529	53	0.987	0.988	0.965	0.026 (0.013–0.037)	0.343	0.001	0.002
M4	99.230	60	0.984	0.983	0.957	0.029 (0.019–0.039)	0.358	0.005	0.003

Notes: M1 represents the configural invariance model; M2 represents the weak invariance model; M3 represents the strong invariance model; M4 represents the strict invariance model.

Abbreviations: BBIS, Brief Barratt Impulsiveness Scale; df, degrees of freedom; TLI, Tucker-Lewis index; CFI, comparative fit index; NFI, normed fit index; CI, confidence interval; RMSEA, root mean square error of approximation; SRMR, standardized root mean square residual.