Validity and reliability of a Five Dimensional Life Satisfaction Index

Area of Science:

• Psychological assessment
• Disability studies
• Quality of life research

Background:

• Life satisfaction is a key indicator of well-being.
• Accurate measurement of life satisfaction is crucial for adults with intellectual disability.
• Existing measures may not be fully validated for this specific population.

Purpose of the Study:

• To examine the validity of the Five Dimensional Life Satisfaction Index.
• To assess the reliability and validity of the index in adults with moderate intellectual disability.

Main Methods:

• The Five Dimensional Life Satisfaction Index was administered to 48 adults with moderate intellectual disability.
• Statistical analyses were performed to evaluate reliability and validity.

Main Results:

• The study demonstrated alternate forms reliability and internal consistency for the index.
• Convergent, discriminant, and construct validity were supported.
• The findings indicate the index is a reliable and valid measure for the target population.

Conclusions:

• The Five Dimensional Life Satisfaction Index is a psychometrically sound instrument for measuring life satisfaction in adults with moderate intellectual disability.
• The findings support the use of this index in research and clinical practice involving individuals with intellectual disability.
• Further research could explore its application in different subgroups within the intellectual disability spectrum.