Means, Standard Deviations, and correlations between the Strength and Difficulties Questionnaire (SDQ) and Psychological Scale of School Membership (PSSM) at Wave 1 and Wave 2.
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**Correlation is significant at the 0.01 level (2-tailed). Note that higher SDQ indicate worse mental health functioning; higher PSSM indicate better school belongingness.
创建时间：
2014-06-26
