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Int J Intercult Relat
Psychiatry Investig


inner Strength-Based Inventory (SBI)

 inner Strength-Based Inventory (SBI)          

download the SBI here  SBI-5_1 Eng.pdf

ดาว์นโหลดภาษาไทย ได้ที่นี่ SBI-V Thai Version Feb 2020 SBI-5.pdf

Tinakon Wongpakaran & Nahathai Wongpakaran

Ten perfections (known as inner strengths) are considered positive psychological characteristics, namely, generosity, morality, mindfulness/meditation, wisdom, perseverance, patience and endurance, truthfulness, determination, loving kindness and equanimity. 

Psychometric property

The SBI shows the acceptable fit statistics with OUTFIT / INFIT ranges from .68 to 1.68. In PCA of residuals, the variance explained by the measurement dimension was 58.0%, and the first principal component of the residuals (first contrast) was 6.8%, while the eigen value was 1.62. No inter-item residual correlations were higher than .3. All items indicated unidimensionality and local independence.

No significant differential item functioning was found due to age and sex.

Person separation was 2.45 for SBI, corresponding to good reliability coefficients of .86. Item reliability was .99 (>.80), The SBI items appeared to be targeted well with the persons (less than .5 logits)

Administration

The score ranges from 5-50. The higher score, the higher level of that respective character.

Total score of the SBI can be used to represent the construct of “inner strength.”  

However, individual score of each 10 item can be used independently. As a single item, there is no internal consistency to be calculated. Test-retest may be a better measure of participant consistency (or at least equally as informative as Cronbach’s alpha)(Shen C, et al, 2019). Reliability of each score is examined among 20 participants using two-week test-retest reliability. Intraclass correlation coefficient (ICC) with absolute agreement method is analyzed, and the results are shown to be acceptable ( ICC > 0.7).

Intraclass Correlation Coefficient

 

Average measures

95% Confidence Interval

F Test with True Value 0

SBI item

Lower Bound

Upper Bound

Value

df1

df2

Sig

1

.873

.679

.950

8.587

19

19

.000

2

.922

.802

.969

14.038

19

19

.000

3

.853

.632

.941

6.690

19

19

.000

4

.848

.612

.940

6.317

19

19

.000

5

.931

.825

.973

13.875

19

19

.000

6

.923

.805

.970

14.231

19

19

.000

7

.828

.575

.931

5.957

19

19

.000

8

.880

.696

.953

8.030

19

19

.000

9

.934

.834

.974

14.550

19

19

.000

10

.783

.444

.914

4.441

19

19

.001

 Conversion Table:  

Total raw score can be transformed into scale score for clinical use especially when used as repeated measure.

Raw score

Scale score

 

Raw score

Scale score

10

10

 

31

30

11

15

 

32

31

12

17

 

33

31

13

19

 

34

32

14

21

 

35

32

15

22

 

36

33

16

22

 

37

33

17

23

 

38

34

18

24

 

39

34

19

24

 

40

35

20

25

 

41

36

21

26

 

42

37

22

26

 

43

37

23

27

 

44

38

24

27

 

45

39

25

27

 

46

40

26

28

 

47

41

27

28

 

48

43

28

29

 

49

46

29

29

 

50

50

30

30

 

 

 

   

Reference:

Nahathai Wongpakaran, Tinakon Wongpakaran & Pimolpun Kuntawong (2020) Development and validation of the (inner) Strength-Based Inventory, Mental Health, Religion & Culture, Published online: 09 Jul 2020 :DOI: 10.1080/13674676.2020.1744310

Shen C, Wang MP, Ho HCY, Wan A, Stewart SM, Viswanath K, Chan SSC, Lam TH: Test–retest reliability and validity of a single-item Self-reported Family Happiness Scale in Hong Kong Chinese: findings from Hong Kong Jockey Club FAMILY Project. Quality of Life Research 2019, 28(2):535-543.







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