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Relationships between student engagement and academic achievement: A meta-analysis
Hao Lei, Yunhuo Cui, and Wenye Zhou, 2018, 46(3), 517–528
 
The Self-Reflection and Insight Scale: A new measure of private self-consciousness
Anthony M. Grant, John Franklin, and Peter Langford, 2002, 30(8), 821–835
 
Relationship between transformational leadership and nurses' job performance: The mediating effect of psychological safety
Hsueh-Feng Wang, Yu-Chia Chen, Feng-Hua Yang, and Chi-Wen Juan, 2021, 49(5), e9712
 
Impact of use of technology in mathematics lessons on student achievement and attitudes
Ramadan Eyyam and Hüseyin S. Yaratan, 2014, 42(0), S31–S42
 
 
Gratitude and happiness: Development of a measure of gratitude and relationships with subjective well-being
Philip C. Watkins, Kathrane Woodward, Tamara Stone, and Russell L. Kolts, 2003, 31(5), 431–452
 
Xin Su and Jiatao Huang, 2021, 49(10), e10797
 
 
 
Measuring happiness with a single-item scale
Ahmed M. Abdel-Khalek, 2006, 34(2), 139–150