Related Experiment Video
Updated: Jul 12, 2026

Qualitative and Quantitative Validation of Tools with Rating Scales Aimed at Assessing the Quality of University Service-Learning
Published on: August 29, 2025
[Reliability and validity of an instrument for adolescents meaning in life scale(AMIL)]
Kyung-Ah Kang1, Shin-Jeong Kim, Mi-Kyung Song
1Department of Nursing, Sahmyook University, Korea. kangka@syu.ac.kr
Purpose:
The purpose of this study was to test the reliability and validity of an MIL instrument for adolescents.
Method:
The research design was a three-phase, methodological study. 1) The original 46 items of the Meaning in Life (MIL) Scale were reviewed and corrected partially by 20 adolescents. 2) The content was validated by an expert panel (n=15) and adolescents (n=5). 3) The instrument was validated by survey (n=468). Finally, 33 items were chosen for the adolescents meaning in life(AMIL) scale.
Results:
Cronbach's alpha coefficient of the 33 items was .92, confirming the high internal consistency of the instrument. 2) Eight factors were extracted through factor analysis: 'experience of love', 'making efforts for goal', 'awareness of essential being', 'awareness of self limitation', 'feeling of satisfaction', 'relation experience', 'positive thinking', and 'hope'. These factors explained 58.26% of the total variance.
Conclusion:
AMIL Scale was identified as a tool with a high degree of reliability and validity. The tool can therefore be effectively utilized to assess the degree of meaning of life in caring areas for adolescents. Studies on AMIL of different adolescent subjects are needed for further verification.
Related Concept Videos
Reliability and Validity
Self-Report Tests of Personality
Self-Evaluation: Self-Enhancement and Self-Verification
Erikson's Theory on Socioemotional Development during Adolescence
Measures of Intelligence
Validity refers to how well a test measures what it claims to measure. An intelligence test should accurately assess intelligence rather than another characteristic, like anxiety. Criterion validity is one way to evaluate this; it...
Self-Discrepancy Theory
