Adaptation of the “Language Use Inventory” to Brazilian Portuguese

Brocchi, Beatriz Servilha; Perissinoto, Jacy; Osborn, Ellen

doi:10.1590/2317-1782/e20240177en

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Original Article • CoDAS 37 (4) • 2025 • https://doi.org/10.1590/2317-1782/e20240177en linkcopy

Adaptation of the “Language Use Inventory” to Brazilian Portuguese

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Purpose To adapt the “Language Use Inventory” parent -report measure for Brazilian Portuguese children.

Methods A total of 254 Brazilian parents and children participated in the survey, comprising five groups within an age range from 18 to 47 months. The translated and pre-adapted version of the Language Use Inventory (LUI) measure into Brazilian Portuguese was used in online and in person format. Analysis of Cronbach’s alpha coefficients was used to verify the internal reliability, and Kruskal-Wallis and Mann-Whitney tests were used to analyze the form of completion, sex, child’s age group, and parents’ education level.

Results Comparative analyses between the completion methods did not identify significant differences between the printed and online formats. The Brazilian Portuguese version of the LUI demonstrated high internal consistency with respect to all subscales and with respect to the entire measure (α>0.99). Girls obtained higher scores than boys for Part 2 (p<0.001) and Part 3 (p=0.001) and on the Total LUI score (p=0.001). Children whose parents had more years of schooling obtained higher scores in Parts 2 and 3.

Conclusion The similarity of results related to internal reliability and developmental trends of the Brazilian Portuguese version of LUI as compared with the original English version, supports its use as a reliable instrument to assess pragmatic language functioning in Brazilian preschoolers.

Keywords:
Language Development; Child Language; Parental Relationship; Preschool; Evaluation Study

Groups	Number	%
1	74	29.1
2	63	24.8
3	49	19.3
4	32	12.6
5	36	14.2
Total	254	100

	Subscale	Questions Number	Cronbach Alpha
Part 1	A	11	0.884
	B	2	0.738
	Total	13	0.873
Part 2	C	21	0.952
	D	7	0.772
	Total	28	0.951
Part 3	F	6	0.883
	G	9	0.947
	H	36	0.980
	I	14	0.871
	J	5	0.773
	K	12	0.888
	M	15	0.913
	N	36	0.966
	Total	133	0.989
Part 2 + 3	Total	161	0.990

n=270		Total A	Total B	Part 1 (total)	Total C	Total D	Part 2 (total)	Total F	Total G	Total H	Total I	Total J	Total K	Total M	Total N	Part 3 (total)
TOTAL B	Correlation Coefficient	0.144
TOTAL B	Sig. (p)	0.018 *
PART 1 (total)	Correlation Coefficient	0.988	0.273
PART 1 (total)	Sig. (p)	<0.001*	<0.001*
TOTAL C	Correlation Coefficient	-0.578	-0.151	-0.592
TOTAL C	Sig. (p)	<0.001*	0.013*	<0.001*
TOTAL D	Correlation Coefficient	-0.333	-0.098	-0.346	0.654
TOTAL D	Sig. (p)	<0.001*	0.109	<0.001*	<0.001*
PART 2 (Total)	Correlation Coefficient	-0.536	-0.144	-0.551	0.960	0.781
PART 2 (Total)	Sig. (p)	<0.001*	0.018*	<0.001*	<0.001*	<0.001*
TOTAL F	Correlation Coefficient	-0.485	-0.092	-0.491	0.800	0.643	0.793
TOTAL F	Sig. (p)	<0.001*	0.131	<0.001*	<0.001*	<0.001*	<0.001*
TOTAL G	Correlation Coefficient	-0.561	-0.078	-0.565	0.845	0.627	0.835	0.797
TOTAL G	Sig. (p)	<0.001*	0.204	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*
TOTAL H	Correlation Coefficient	-0.480	-0.014	-0.468	0.734	0.527	0.716	0.711	0.813
TOTAL H	Sig. (p)	<0.001*	0.817	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*
TOTAL I	Correlation Coefficient	-0.529	-0.125	-0.535	0.776	0.607	0.769	0.802	0.830	0.795
TOTAL I	Sig. (p)	<0.001*	0.040*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*
TOTAL J	Correlation Coefficient	-0.349	-0.097	-0.356	0.551	0.485	0.556	0.586	0.649	0.583	0.658
TOTAL J	Sig. (p)	<0.001*	0.111	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*
TOTAL K	Correlation Coefficient	-0.495	-0.044	-0.495	0.750	0.540	0.728	0.725	0.845	0.796	0.820	0.668
TOTAL K	Sig. (p)	<0.001*	0.470	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*
TOTAL M	Correlation Coefficient	-0.514	-0.069	-0.514	0.761	0.577	0.744	0.766	0.844	0.782	0.854	0.676	0.864
TOTAL M	Sig. (p)	<0.001*	0.260	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*
TOTAL N	Correlation Coefficient	-0.559	-0.092	-0.560	0.802	0.592	0.785	0.786	0.883	0.837	0.878	0.668	0.871	0.901
TOTAL N	Sig. (p)	<0.001*	0.130	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*
PART 3- LUI (TOTAL)	Correlation Coefficient	-0.555	-0.074	-0.552	0.815	0.603	0.797	0.816	0.906	0.924	0.912	0.706	0.910	0.923	0.963
PART 3- LUI (TOTAL)	Sig. (p)	<0.001*	0.225	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0,001*
total LUI	Correlation Coefficient	-0.563	-0.081	-0.562	0.835	0.624	0.821	0.821	0.909	0.920	0.910	0.703	0.908	0.919	0.964	0.998
total LUI	Sig. (p)	<0.001*	0.185	<0.001	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*	<0.001*

		Male	Female	Mann-Whitney Test (p)
TOTAL A	Average	6.72	6.45
	Median	7.00	7.00	0.398
	Standard deviation	3.73	3.42
TOTAL B	Average	2.02	1.94
	Median	2.00	2.00	0.336
	Standard deviation	0.87	0.76
PART 1 (total)	Average	8.74	8.39
	Median	10.00	9.00	0.268
	Standard deviation	4.05	3.72
TOTAL C	Average	16.17	18.61
	Median	20.00	21.00	0.001*
	Standard deviation	6.09	4.48
TOTAL D	Average	5.75	6.46
	Median	7.00	7.00	0.005*
	Standard deviation	2.19	1.54
PART 2 (Total)	Average	21.91	25.07
	Median	26.00	28.00	<0.001*
	Standard deviation	7.84	5.61
TOTAL F	Average	3.91	4.74
	Median	5.00	6.00	<0.001*
	Standard deviation	2.16	1.92
TOTAL G	Average	5.08	6.65
	Median	6.00	8.00	0.001*
	Standard deviation	3.72	3.23
TOTAL H	Average	18.60	22.94
	Median	19.00	28.00	0.007*
	Standard deviation	13.30	12.73
TOTAL I	Average	7.57	9.46
	Median	8.00	12.00	0.005*
	Standard deviation	5.31	5.53
TOTAL J	Average	1.46	1.97
	Median	1.00	2.00	0.012*
	Standard deviation	1.65	1.69
TOTAL K	Average	5.19	6.88
	Median	5.00	7.00	<0.001*
	Standard deviation	3.81	3.57
TOTAL M	Average	6.79	8.80
	Median	6.00	10.00	0.002*
	Standard deviation	5.05	4.82
TOTAL N	Average	11.22	16.33
	Median	8.00	17.00	<0.001*
	Standard deviation	10.97	11.44
PART 3- (TOTAL)	Average	59.82	77.79
	Median	55.00	92.00	0.001*
	Standard deviation	42.47	40.38
TOTAL LUI	Average	81.73	102.86
	Median	80.00	120.00	0.001*
	Standard deviation	48.98	44.76

			Group by age (months)								(p)		Results
			18 to 24 (1)		25 to 30 (2)		31 to 36 (3)		37 to 42 (4)	43 to 47 (5)	(p)		Results
TOTAL A	Average		8.77		6.70		5.92		4.91	4.28
	Median		10.00		7.00		6.00		5.00	5.00	<0.001*		(1) > (2) = (3) = (4) = (5)
	Standard deviation		2.83		3.20		3.58		3.57	3.15			(2) > (5)
	n		74		63		49		32	36
TOTAL B	Average		2.07		2.08		1.96		1.66	1.94
	Median		2.00		2.00		2.00		2.00	2.00	0.368		(1) = (2) = (3) = (4) = (5)
	Standard deviation		0.53		0.77		0.84		1.07	1.04
	n		74		63		49		32	36
Part 1 (total)	Average		10.84		8.78		7.88		6.56	6.22
	Median		12.00		9.00		8.00		6.50	7.00	<0.001*		(1) > (2) = (3) = (4) = (5)
	Standard deviation		2.97		3.45		3.81		4.01	3.83			(2) > (4) = (5)
	n		74		63		49		32	36
TOTAL C	Average		13.03		18.16		18.61		20.53	20.56
	Median		12.50		21.00		21.00		21.00	21.00	<0.001*		(1) < (2) = (3) = (4) = (5)
	Standard deviation		5.78		5.16		4.89		1.48	1.50
	n		74		63		49		32	36
TOTAL D	Average		5.23		6.16		6.39		7.00	6.61
	Median		6.00		7.00		7.00		7.00	7.00	<0.001*		(1) < (2) = (3) = (4) = (5)
	Standard deviation		2.30		2.06		1.68		0.44	1.20
	n		74		63		49		32	36
PART 2 (Total)	Average		18.26		24.32		25.00		27.53	27.17
	Median		18.00		27.00		28.00		28.00	28.00	<0.001*		(1) < (2) = (3) = (4) = (5)
	Standard deviation		7.57		6.78		6.33		1.52	1.95
	n		74		63		49		32	36
TOTAL F	Average		2.91		4.25		4.90		5.34	5.69
	Median		3.00		5.00		6.00		6.00	6.00	<0.001*		(1) < (2) = (3) = (4) = (5)
	Standard deviation		2.17		1.99		2.04		0.90	0.75			(2) < (5)
	n		74		63		49		32	36
TOTAL G	Average		2.49		6.22		7.02		8.16	8.58
	Median		1.00		7.00		9.00		9.00	9.00	<0.001*		(1) < (2) = (3) = (4) = (5)
	Standard deviation		2.90		3.07		3.21		1.71	1.56			(2) < (4) = (5)
	n		74		63		49		32	36
TOTAL H	Average		10.54		20.21		23.14		27.97	33.17			(1) < (2) = (3) = (4) = (5)
	Median		6.50		21.00		29.00		30.00	36.00	<0.001*		(2) < (4) = (5)
	Standard deviation		10.79		11.58		13.17		8.82	5.64			(3) < (5)
	n		74		63		49		32	36
TOTAL I	Average		3.88		8.44		9.94		12.16	13.00			(1) < (2) = (3) = (4) = (5)
	Median		2.00		9.00		12.00		13.00	14.00	<0.001*		(2) < (4) = (5)
	Standard deviation		4.36		5.92		4.60		2.19	1.47			(3) < (5)
	n		74		63		49		32	36
TOTAL J	Average		0.66		1.56		2.18		2.31	3.00
	Median		0.00		1.00		2.00		2.00	3.00	<0.001*		(1) < (2) = (3) = (4) = (5)
	Standard deviation		1.06		1.48		1.82		1.57	1.69			(2) < (5)
	n		74		63		49		32	36
TOTAL K	Average	2.78		5.83		7.24		8.06		9.64			(1) < (2) = (3) = (4) = (5)
	Median	2.00		6.00		8.00		8.50		10.00		<0.001*	(2) < (4) = (5)
	Standard deviation	2.96		2.84		3.61		2.64		2.24			(3) < (5)
	n	74		63		49		32		36
TOTAL M	Average	3.35		7.32		9.82		10.66		12.47
	Median	2.00		8.00		11.00		11.00		13.00		<0.001*	(1) < (2) < (3) = (4) = (5)
	Standard deviation	3.38		4.28		4.68		3.34		2.92			(3) < (5)
	n	74		63		49		32		36
TOTAL N	Average	3.66		11.92		17.67		21.81		25.36
	Median	0.00		10.00		20.00		22.50		27.00		<0.001*	(1) < (2) < (3) = (4) = (5)
	Standard deviation	6.69		9.68		10.26		7.78		7.33			(3) < (5)
	n	74		63		49		32		36
PART 3- (TOTAL)	Average	30.27		65.75		81.92		96.47		110.92			(1) < (2) = (3) = (4) = (5)
	Median	22.00		65.00		93.00		95.50		119.50		<0.001*	(2) < (4) = (5)
	Standard deviation	29.11		36.06		39.11		22.76		20.04			(3) < (5)
	n	74		63		49		32		36
TOTAL LUI	Average	48.53		90.06		106.92		124.00		138.08			(1) < (2) = (3) = (4) = (5)
	Median	41.50		93.00		121.00		123.50		146.00		<0.001*	(2) < (4) = (5)
	Standard deviation	35.10		41.17		44.40		23.58		21.32			(3) < (5)
	n	74		63		49		32		36

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Significative correlation

[2] Caption: Sig = significative