*reverse keyed items
Administration and Scoring
The 40-item MSLSS may be administered to children in  groups as well as individually. The instructions for the scale are  provided prior to the rest of the scale‚ with younger children‚ (grades  3-5)‚ it is recommended that the examiner read the directions aloud to  the students and encourage them to ask questions as necessary. With all  students‚ it is essential to monitor their responses to ensure that they  respond appropriately (e.g.‚ answer all questions‚ non-random and  non-biased responding). The readability of the scale is at the 1.5 grade  level‚ so most students require little or no assistance in responding  to the questions.
Scoring is straightforward. The four response options  are assigned points as follows: (never = 1); (sometimes = 2); (often =  3); and (almost always = 4). Negatively-keyed items must be reverse  scored (see pp. 3-4 for the list of negatively-keyed items). Hence‚  negatively-keyed items are scored so that almost always = 1‚ and so  forth. Higher scores thus indicate higher levels of life satisfaction  throughout the scale.
It should be noted that a 6-point agreement format has  been used with middle and high school students (Huebner et al.‚ 1998).  In this case‚ response options are assigned points as follows: (1 =  strongly disagree‚ 2 = moderately disagree‚ etc.).
Because the domains consist of unequal number of  items‚ the domain and total scores are made comparable by summing the  item responses and dividing by the number of domain (or total) items.
Normative Data
Normative  data obtained to date are available for elementary (grades 3-5)  (Huebner‚ 1994)‚ middle (Huebner et al.‚ 1998)‚ and high school students  (Gilman et al.‚ 2000; Greenspoon & Saklofske‚ 2997; Huebner‚ 1994;  Huebner‚ Laughlin‚ Ash‚ & Gilman‚ 1997). 
Reliability
Internal consistency (alpha) coefficients have been  reported in various publications (Dew‚ 1996; Greenspoon & Saklofske‚  1997; Huebner‚ 1994; Huebner‚ Laughlin‚ Ash‚ & Gilman‚ 1997). The  findings suggest that the reliabilities all range from .70s to low .90s;  thus they are acceptable for research purposes. Test-retest  coefficients for two- and four-week time periods have also been reported  (Dew‚ 1996; Huebner et al.‚ 1997; Huebner & Terry‚ 1995) falling  mostly in the .70 - .90 range‚ providing further support for the  reliability of the scale.
Validity
The results of exploratory factor analyses have  supported the dimensionality of the MSLSS (Huebner‚ 1994). Confirmatory  factor analyses have provided further support or the multidimensional‚  hierarchical model consisting of a general life satisfaction  higher-order factor at the apex of the hierarchy along with five  specific domains below (Gilman et al.‚ 2000; Huebner et al.‚  1998). Findings have generalized to school age students in Canada  (Greenspoon & Saklofske‚ 1997) Korea (Park‚ 2000)‚ and Spain (Casas  et al.‚ 2000).
Convergent and discriminant validity have also been  demonstrated through predicted correlations with other self-report  well-being indexes (Dew et al.‚ 2001; Gilman et al.‚ 2000; Greenspoon  & Saklofske‚ 1997; Huebner‚ 1994; Huebner et al.‚ 1998)‚ parent  reports (Dew et al.‚ 2001; Gilman & Huebner‚ 1997)‚ teacher reports  (Huebner & Alderman‚ 1993)‚ and social desirability scales (Huebner  et al.‚ 1998). Findings of weak relationships with demographic variables  (e.g.‚ age‚ gender) also fit with theoretical expectations (Huebner‚  1994; Huebner et al.‚ 1998).
Nevertheless‚ additional validation research is needed  to clarify the precise boundaries of the life satisfaction construct as  well as the range of applications for particular children. For example‚  Ash and Huebner (1998) and Griffin and Huebner (2000) reported on  unique aspects of the validity and usefulness of the MSLSS in the  assessment of the well-being of two groups of exceptional children  (i.e.‚ academically gifted and emotionally disordered middle school  students). Studies of the usefulness of the MSLSS and other life  satisfaction scales with other groups of children (e.g.‚ children with  mental disabilities‚ ADHD) would be illuminating as well.
Permission to Use
The MSLSS is in the public domain. Researchers may use  it without permission. The author welcomes any feedback regarding its  usefulness.
ali.asgari.edu@gmail.com
2001 Version
Scott Huebner‚ Ph.D.
University of South Carolina
Department of Psychology
Columbia‚ SC 29208