YLSIYouth Level of Service Inventory
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The five YLSI attitude subscales derived through factor analysis are: peer, alcohol avoidant, drug avoidant, performance, and parental attitudes.
Favorable Spearman rank-order correlation coefficients between the YLSI Part C and the Piers-Harris Children's Self-Concept Scale (.
The entire instrument was read aloud to the students during administration to make sure the students understood the questions and completed the YLSI uniformly.