The Vision and Living Skills Research Project:
The effects of personal and family characteristics on the development of independence in 3 to 18 year olds
Focus: School Years
Topic: Living Skills
Rosemary Flavel
Senior Research Officer
Department of Family and Community Nursing M02
University of Sydney
New South Wales 2006
Australia
61 2 9351.0606
rflavel@nursing.usyd.edu.au
Additional Authors: Helen Lunn (Royal Blind Society), Christine Johnston (University of Sydney) and Elaine Chapman (University of Sydney)
The Vision and Living Skills (VaLS) Research Project was initiated by an approach to The University of Sydney by Royal Blind Society to assist with an identified service delivery problem. A 1996 survey by Royal Blind Society of the needs of 122 families of children aged 5 to 12 years, pointed strongly to parents’ concerns about their children’s abilities to cope with the skills of daily living. 64.5% reported that their child was having difficulties at home in areas such as eating, personal care and chores. This finding presented a significant challenge for service provision. Because of the low incidence of vision impairment, the group was geographically scattered across New South Wales and the Australian Capital Territory, diverse in culture and language background and presented highly specialised needs for intervention. Royal Blind Society did not have the resources to provide regular, one-to-one intervention on a state-wide basis and it was not clear that, even with such resources, this was the preferred mode of service delivery. In addition, the children were, in general, attending regular schools where daily living skills were unlikely to form part of the curriculum. The literature (e.g. Sacks & Pruett, 1992) also suggested that alternate approaches, such as intensive training programmes, did not always lead to skills generalisation from the training environment to home.
The major aims of the project were to better understand the factors affecting the development of daily living skills and to design a range of flexible, innovative and effective service delivery models to accommodate differing child and family needs. As already discussed in Johnston, Flavel and Lunn (2002), initial findings from the project confirmed the critical impact of vision impairment upon the development of daily living skills and were consistent with those reported by Hatton, Bailey, Burchinal and Ferrell (1997) who had looked at more general aspects of development in young children. They found that there appeared to be a threshold effect, with the development of children whose visual functioning is 20/800 (6/240) or worse being significantly different from those with better vision. It is important to also note that Hatton et al. found that developmental patterns varied markedly among the children and that this appeared to be due both to the presence of co-occurring disabilities and to the children’s resiliency. Statements about the impact of vision impairment on functioning must, therefore, take sufficient account of individual differences.
Furthermore, children’s development can only be understood within the family and community context in which they live. The disability field in general, and the early childhood intervention area in particular, have moved in recent years to the realisation that if intervention is to be successful, the individual can not be seen in isolation (Dunst, Trivette & Deal, 1988; Hanson & Lynch, 1995). Research occurring within this framework is increasingly guided by the ecocultural paradigm, which has also derived from a family systems approach and the ecological theory expounded by Bronfenbrenner (1979).
Ecocultural theory has particular relevance to the development of daily living skills since it extends the notions of family systems approaches by taking the perspectives of the family into account, in a context which looks explicitly at the meanings they give to their experience, and analyses the daily routines that are created by environmental and cultural forces (Bernheimer, Gallimore & Weisner, 1990). This emphasis upon the ways in which families negotiate daily life and routines has clear and crucial links with the ways in which children and young adults learn the routines and skills of daily living. The approach was therefore adopted for the present study.
This phase of the project addressed the following questions:
Both quantitative and qualitative approaches were used in exploring these questions. In the quantitative phase the intent was to look at not just the impact of individual factors but how they might interact to affect the acquisition of daily living skills. Of relevance here was Hatton et al.’s (1997) finding that intelligence had an additive effect on young children’s development when coupled with vision impairment. This was then a factor that warranted further exploration. Gender and age were also seen as potentially important and were included for consideration.
In the qualitative phase data from interviews and focus groups together with additional child measures (e.g. self-concept) were gathered to enable the affect of family attitudes and characteristics and child personality and views of self to be studied.
The sample for the quantitative phase comprised 221 children and adolescents drawn from Royal Blind Society’s client data base and living in both city and country areas of NSW and the ACT. Their ages ranged from 3 to 18 years and they included 102 females and 119 males. Those identified as having either a severe intellectual disability or a significant physical disability were not included in the sample, as it was anticipated that this degree of additional disability would have a major impact on the acquisition of independent living skills.
Information on the individuals’ vision impairment, based on their most recent assessment, was obtained from their Royal Blind Society file with their own or their parent’s permission. Based upon the clinical experience of the staff from Royal Blind Society and the results of the Hatton, Bailey, Burchinal and Ferrell (1997) study, four categories were generated to take account of potential functional vision differences, namely:
1. No light perception à <3/120 (Level 1 – Blind)
2. 3/120à <6/60 (Level 2 – Partially sighted 1)
3. 6/60 à <6/18 (Level 3 – Partially sighted 2)
4. 6/18 à 6/6 (Level 4 – Mild vision impairment to normal)
The sample for the qualitative phase comprised children from the blind group included in the first phase of the study. Data are still being gathered for this group with, to date, approximately 20 parental interviews conducted.
Procedure
In the quantitative phase, all children were administered a verbally-based cognitive screening test (either the Slosson Intelligence Test-Revised, Reynell-Zinkin Developmental Scales for Young Visually Handicapped Children - Comprehension or Reynell Developmental Language Scales III – Comprehension, depending on age and vision level).
As discussed in Johnston, Flavel & Lunn (2002), information regarding participants’ independent living skills was obtained through parent / caregiver interviews (undertaken either face-to-face or by telephone), during which the Personal Living Skills cluster from the Scales of Independent Behavior-Revised (Bruininks, Woodcock, Weatherman & Hill, 1996) was administered. Testers were experienced allied health or early special education professionals. All scoring of test materials was undertaken by one member of the research team.
Qualitative data were obtained through parental interviews, parental report (to assess perceived child attributes), a series of focus groups with adults who are blind, parents of children who have a significant vision impairment and experienced service delivery staff (from both Royal Blind Society and inclusive preschools). All group and individual interviews were recorded either on audiotape or by written record and the transcriptions analysed for emerging themes. Self-concept measures (discussed in Johnston, Flavel & Lunn, 2002) have been administered by the same staff involved in the quantitative phase.
As noted above, data collection and analysis of the qualitative data are continuing. The formal presentation of results will, therefore, be restricted to the quantitative analyses. Some trends in the interview data which have been observed will be set out in the discussion section.
For the purpose of these analyses, the difference scores which can be obtained from the SIB-R were utilised. These scores take the form of a discrepancy measure between what might be expected from the norms for an individual of that age and what has been achieved. Analyses were conducted for each of the five sub-scales of the Personal Skills cluster and for the cluster score itself. To determine whether vision category correlated significantly with Eating, Dressing, Self-care, Toiletting, and Domestic Skills, a multivariate analysis of covariance (MANCOVA) was performed. In this analysis, gender was also entered as an independent variable to determine whether the impact of vision on these skills differed across males and females, producing a 2 (gender: male vs. female) by 4 (vision category: Level 1 vs. Level 2 vs. Level 3 vs. Level 4) factorial design. To reduce error variance and assess the effects of these factors on each of the sub-scales after taking into account the effects of intellectual level and age, the latter two factors were entered as covariates in the model. Table 1 presents means and standard deviations by each of the factors within the model.
Vision |
||||||
SIB-R |
Level 1Ms n = 26 Fs n = 29 n = 55 |
Level 2 Ms n = 30 Fs n = 17 n = 47 |
Level 3Ms n = 41 Fs n= 39 n = 80 |
Level 4 Ms n = 22 Fs n = 17 n= 39 |
TotalMs n= 119 Fs n = 102 n = 221 |
|
Eating
|
Males |
M= -38.35 sd= 17.86 |
M= -15.43 sd= 15.45 |
M= -16.00 sd= 17.6 |
M= -17.23 sd= 20.29 |
M= -20.97 sd= 19.75 |
|
Females |
M= -32.17 sd= 16.85 |
M= -12.35 sd= 14.43 |
M= -16.31 sd= 14.49 |
M= -11.18 sd= 17.78 |
M= -19.30 sd= 17.64 |
|
|
Total |
M= -35.09 sd= 17.45 |
M= -14.32 sd= 15 |
M= -16.15 sd= 16.06 |
M= -14.59 sd= 19.23 |
M= -20.2 sd= 18.78 |
|
Toiletting |
Males |
M= -12.69 sd= 10.94 |
M= -3.2 sd= 8.62 |
M= -12.63 sd= 20.23 |
M= -5.64 sd= 15.21 |
M= -8.97 sd= 15.55 |
|
Females |
M= -11.21 sd= 9.8 |
M= -5.71 sd= 9.64 |
M= -8.87 sd= 17.15 |
M= -9.65 sd= 13.66 |
M= -9.14 Sd= 13.6 |
|
|
Total |
M= -11.91 sd= 10.29 |
M= -4.11 sd= 8.98 |
M= -10.8 sd= 18.77 |
M= -7.38 sd= 14.51 |
M= -9.05 sd= 14.65 |
|
Dressing |
Males |
M= -33.5 sd= 16.07 |
M= -15.27 sd= 13.87 |
M= -18.07 sd= 18.01 |
M= -15.5 sd= 19.24 |
M= -20.26 sd= 18.13 |
|
Females |
M= -23.97 sd= 15.34 |
M= -9.06 sd= 11.98 |
M= -16.28 sd= 20.30 |
M= -7.29 sd= 19.93 |
M= -15.76 sd= 18.58 |
|
|
Total |
M= -28.47 sd= 16.27 |
M= -13.02 sd= 13.43 |
M= -17.20 sd= 19.06 |
M= -11.92 sd= 19.72 |
M= -18.19 sd= 18.43 |
|
Self-Care |
Males |
M= -20.77 sd= 13.88 |
M= -11.53 sd= 9.88 |
M= -12.05 sd= 12.94 |
M= -8.91 sd= 14.32 |
M= -13.24 sd= 13.24 |
|
Females |
M= -16.34 sd= 14.53 |
M= -5.94 sd= 7.74 |
M= -8.92 sd= 11.51 |
M= -6.76 sd= 15.14 |
M= -10.18 sd= 13.07 |
|
|
Total |
M= -18.44 sd= 14.27 |
M= -9.51 sd= 9.48 |
M= -10.53 sd= 12.29 |
M= -7.97 sd= 14.53 |
M= -11.83 sd= 13.22 |
|
DomesticSkills |
Males |
M= -17.23 sd= 11.27 |
M= -4.2 sd= 7.4 |
M= -6.88 sd= 10.11 |
M= -9.68 sd= 13.31 |
M= -8.98 sd= 11.36 |
|
Females |
M= -12.93 sd= 12.14 |
M= -5.76 sd= 11.64 |
M= -10.21 sd= 12.57 |
M= -5.35 sd= 11.71 |
M= -9.43 sd= 12.34 |
|
|
Total |
M= -14.96 sd= 11.83 |
M= -4.77 sd= 9.07 |
M= -8.50 sd= 11.43 |
M= -7.79 sd= 12.66 |
M= -9.19 sd=11.80 |
|
Key: Level 1: No light perception à <3/120; Level 2: 3/120à <6/60; Level 3: 6/60 à <6/18; Level 4: 6/18 à 6/6
Table 1: Means and standard deviations for the five sub-scales of the Personal Skills Cluster (SIB-R) by vision and gender
Initial screening tests indicated adequate conformity to all univariate and multivariate assumptions (e.g., normality, homogeneity of variance) for all five subtests. Outcomes of the multivariate analysis are presented in Table 2 below. As indicated, there were significant multivariate main effects for all of the entered factors, but no significant interaction effect between gender and vision.
Follow-up univariate ANCOVAs were conducted. Using a Bonferroni-corrected alpha level of 0.01, intellectual level had significant effects on all subscales apart from the Domestic Skills test, while age had significant effects on the Eating, Self-Care, and Domestic Skills scales. Vision had significant effects on Eating, Dressing, and Domestic Skills, while the effect on Self-Care approached significance (p = 0.02).
|
Effect |
V |
F |
Hypothesis df |
Error df |
Sig. |
Eta Squared |
|
Intercept |
0.465 |
35.978(a) |
5 |
207 |
0.000 |
0.465 |
|
Intellectual Ability |
0.374 |
24.746(a) |
5 |
207 |
0.000 |
0.374 |
|
Age |
0.342 |
21.475(a) |
5 |
207 |
0.000 |
0.342 |
|
Gender |
0.082 |
3.722(a) |
5 |
207 |
0.003 |
0.082 |
|
Vision |
0.226 |
3.412 |
15 |
627 |
0.000 |
0.075 |
|
Gender*Vision |
0.083 |
1.185 |
15 |
627 |
0.278 |
0.028 |
Table 2: Multivariate Outcomes for 2 by 4 MANCOVA
The means and standard deviations for the Personal Skills cluster are given in Table 3 below.
|
Gender |
Vision |
M |
SD |
N |
Males |
Level 1 |
-21.23 |
17.54 |
26 |
|
Level 2 |
-10.27 |
8.5 |
30 |
|
|
Level 3 |
-13.44 |
12.19 |
41 |
|
|
Level 4 |
-11.59 |
13.86 |
22 |
|
|
Total |
-14 |
13.56 |
119 |
|
Females |
Level 1 |
-19.69 |
11.87 |
29 |
|
Level 2 |
-7.41 |
9.23 |
17 |
|
|
Level 3 |
-12.36 |
11.52 |
39 |
|
|
Level 4 |
-8.18 |
12.05 |
17 |
|
|
Total |
-12.92 |
12.15 |
102 |
|
Total |
Level 1 |
-20.42 |
14.7 |
55 |
|
Level 2 |
-9.23 |
8.78 |
47 |
|
|
Level 3 |
-12.91 |
11.81 |
80 |
|
|
Level 4 |
-10.1 |
13.05 |
39 |
|
|
Total |
-13.5 |
12.91 |
221 |
Table 3:Means and standard deviations for cluster scores
Outcomes of the univariate ANCOVA are presented in Table 4. As indicated, age, intellectual level, and vision all had significant effects on overall cluster scores, with the effect for gender approaching significance.
|
Source |
Type III Sum of Squares |
df |
Mean Square |
F |
Sig. |
Eta Squared |
|
Corrected Model |
11217.994(a) |
9 |
1246.444 |
10.334 |
0.000 |
0.306 |
|
Intercept |
7517.182 |
1 |
7517.182 |
62.325 |
0.000 |
0.228 |
|
Age |
1641.83 |
1 |
1641.83 |
13.612 |
0.000 |
0.061 |
|
Intellectual Ability |
5851.927 |
1 |
5851.927 |
48.518 |
0.000 |
0.187 |
|
Gender |
360.136 |
1 |
360.136 |
2.986 |
0.085 |
0.014 |
|
Vision |
1614.805 |
3 |
538.268 |
4.463 |
0.005 |
0.06 |
|
Gender * Vision |
220.275 |
3 |
73.425 |
0.609 |
0.610 |
0.009 |
|
Error |
25449.255 |
211 |
120.613 |
|
|
|
Table 4: Outcomes of the univariate ANCOVA
The following points can be made with respect to the factors included in the quantitative analyses:
As noted, analyses have still to be completed on the qualitative data. However, some general points can be made:
The results obtained thus argue strongly for the conclusion that an individual’s level of independence is affected by many factors. Vision, while critical, is only one of those. If intervention is to be successful it must take full account of child and family characteristics.
Bernheimer, L.P., Gallimore, R. & Weisner, T.S. (1990) Ecocultural Theory as a Context for the Individual Family Service Plan, Journal of Early Intervention, 14, 3, pp. 219-233.
Bronfenbrenner, U. (1979) The Ecology of Human Development: Experiments by Nature and Design, Harvard Uni. Press, Cambridge, MA.
Bruininks, R.H., Woodcock, R.W., Weatherman, R.F. & Hill, B.K. (1996). Scales of Independent Behavior – Revised. Itasca, Ill.: Riverside Publishing.
Dunst, C., Trivette, C. & Deal, A. (1988). Enabling and Empowering Families: Principles and Guidelines for Practice. Brookline Books, Cambridge, MA.
Hanson, M.J. & Lynch, E.W. (1995). Early Intervention: Implementing Child and Family Services for Infants and Toddlers Who Are At Risk or Disabled. 2nd ed., Pro-Ed, Austin, Texas.
Johnston, C., Flavel, R. & Lunn, H. (2002). The Vision and Living Skills Research Project: Levels of daily living skills and self-concept in children and adolescents with severe vision impairment. In Proceedings of the 11th World Conference of the International Council for Education of People with Visual Impairment. Noordwidjhout, The Netherlands. July-August.
Sacks, S.Z. & Pruett, K.M. (1992). Summer transition training project for professionals who work with adolescents and young adults. Journal of Visual Impairment and Blindness, 86, 5, 211-214.
Please send comments or questions to webmaster@icevi.org.