1. Validation of Well-Being Scale related to skincare products
N°EP-WB0031
Validation of Well-Being Scale related to skincare products
M.-H. Bardel, B. Beaufils, C. Chréa, S. Navarro, C. Pêcher & D. Mougin
Chanel Parfums Beauté
THE CONTEXT * Important impact of cosmetics on well-being, more precisely the skincare products * A lot of tools to assess the quality of life or global well-being, but no scales specifically developed for cosmetics use METHODOLOGY Application of different steps of psychological tests validation according to Vallerand (1989) * Step 1 : Establishment of a Preliminary version (focus group & Review) * Step 2 : Exploratory Factor Analysis * Step 3 : Confirmatory Factor Analysis

2. N°EP-WB0031 Step 1 : Establishment of Preliminary version
Collect step
Review
Focus group
Expert comittee
56 items
Clarity study
Preliminary version
29 items
Step 2 : Exploratory Factor Analysis (EFA)
N = 614 french women
PCA with Oblimin rotation revealed a structure with 2 strong and independent factors
Well-being factor (λ1=13.17 )
Ill-being factor (λ2=3.32)
For well-being factor : PCA with Oblimin rotation revealed a structure with 4 factors (70.62% of variance)
3 items were excluded
Eigenvalues
Indices
Total
% of variance
Cumulative % 1
13.133
57.100 2
1.301
5.655
62.755 3
1.108
4.816
67.571 4
.702
3.052
70.624 
Number of factor determined by :
- Kaiser criterion (Eigenvalues > 1)
- 70% of total variance

3. Well-Being Scale composed to 26 items and 5 dimensions
N°EP-WB0031
Step 3 : Confirmatory Factor Analysis (CFA)
N = 299 french women
A Confirmatory Factor Analysis performed on a 5-factors model from EFA
RELAXATION
4 items
α = .86
PLEASURE
5 items
OPTIMISM
8 items
α = .92
REJUVENATION
3 items
α = .81
ILL-BEING
6 items
α = .76
Indices
Values
CFI
0.935
TLI
0.927
GFI
0.869
RMSEA
0.058
SRMR
0.055
Well-Being Scale composed to 26 items and 5 dimensions