Validity and reliability of a "simplified" version of the Taylor Complex Figure Test for the assessment of older adults with low formal education

Paula, Jonas Jardim de; Costa, Mônica Vieira; Andrade, Giovanna de Freitas de; Ávila, Rafaela Teixeira; Malloy-Diniz, Leandro Fernandes

doi:10.1590/S1980-57642016DN10100010

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Original Articles • Dement. neuropsychol. 10 (1) • Jan-Mar 2016 • https://doi.org/10.1590/S1980-57642016DN10100010 linkcopy

Validity and reliability of a "simplified" version of the Taylor Complex Figure Test for the assessment of older adults with low formal education

Validade e confiabilidade de uma versão "simplificada" da Figura Complexa de Taylor para a avaliação dos idosos com baixa escolaridade

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Objective : The assessment of visuospatial abilities and memory using tasks such as the Taylor Complex Figure Task (TCFT) is biased for older adults with low formal education. We devised a "Simplified" version of the TCFT designed to assess older adults with low educational background and provide preliminary evidence of its psychometric properties.

Methods : We evaluated a heterogeneous sample of healthy older adults and patients with mild cognitive impairment and Alzheimer's disease dementia using the simplified TCFT and other neuropsychological measures.

Results : Our results suggest that the test copy, immediate and delayed recall have high inter-rater agreement and internal consistency, significant correlations with other tests of visuospatial abilities, memory and intelligence, and also detected significant group differences between controls and patients.

Conclusion : Our study presents a new measure for assessing low-educated elderly with promising evidence of validity and reliability.

Alzheimer's disease; complex figure test; low formal education; neuropsychological assessment; mild cognitive impairment

Measures	NA (n = 26)		aMCI (n = 42)		MD-aMCI (n = 48)	AD (n = 73)		Group differences¹
Measures	Mean	SD		Mean	SD	Mean	SD						Mean	SD		F	n²
Age	71.92	7.83	aMCI (n = 42)		74.57	7.58		Group differences¹	77.10	8.59	77.08	7.71		-	-
Education	5.69	4.66		5.36	4.96	3.65	3.25		3.81	3.44	-	-
DRS - Total Score	129.10	10.60		122.11	9.31	112.54	8.08		98.38	13.34	71.47**	0.54
Raven Progressive Matrices	21.23	6.31		20.71	6.40	16.85	4.36		15.45	4.78	9.73**	0.14
Stick Design Test	11.85	0.46		11.69	0.81	10.98	1.41		9.68	2.41	14.69**	0.19
DRS - Constructional Praxis	5.42	0.99		5.21	1.52	4.68	1.52		4.12	1.90	4.21**	0.06
RAVLT IM	7.96	2.24		3.69	2.21	3.37	2.16		2.11	1.80	49.78**	0.45
RAVLT DR	7.88	2.23		3.86	2.25	3.46	2.32		1.86	1.85	49.95**	0.45
DRS - Memory	22.99	2.04		18.59	3.00	17.03	2.91		13.15	3.47	67.91**	0.53
sTCFT Copy	19.12	5.38		18.50	5.08	15.79	5.09		13.34	6.64	6.19**	0.10
sTCFT Immediate Recall	12.46	4.62		8.71	5.82	6.91	4.80		3.61	3.25	24.91**	0.30
sTCFT Delayed Recall	12.08	4.90		8.62	5.62	7.17	4.57		3.11	3.32	28.81**	0.33

Element	Copy	Immediate Recall	Delayed Recall
1 - Square	0.84	0.78	0.77
2 - Triangle at left	0.76	0.74	0.77
3 - Arrow at left	0.82	0.91	0.83
4 - Vertical line	0.77	0.74	0.71
5 - Horizontal line	0.64	0.63	0.73
6 -Triangle at bottom	0.53	0.93	0.92
7 - Row of small lines	0.36	0.73	0.64
8 - Star	0.65	0.67	0.67
9 - Diagonals in top left quadrant	0.66	0.76	0.76
10 - Horizontal line in top half	0.54	0.58	0.79
11 - Rectangle	0.75	0.79	0.89
12 - Arrow at the top right quadrant	0.70	0.76	0.83
Cronbach's Alpha for all items	0.89	0.97	0.96

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[TFN01] ¹Multivariate General Linear Model with age and education as covariates. *< 0.01; **< 0.001. DRS: Dementia Rating Scale; RAVLT: Rey Auditory-Verbal Learning Test; IM: Immediate Recall; DR: Delayed Recall; sTCFT: "Simplified" Taylor Complex Figure Test; NA: Normal Aging; aMCI: Amnestic Mild Cognitive Impairment; MDaMCI: Multiple Domain Amnestic Mild Cognitive Impairment; AD: Alzheimer's disease.