C93 Field Experiments, D91 Role and Effects of Psychological, Emotional, Social, and Cognitive
C93, D91, I20, I30, J13
C23, C26, D13, D80, D82, C93, I31, D04
I21 ; I38 ; J24 ; O12 ; O15
C93, G40, Q50
O12, J22, I32, J24, J16
I23, I20, J16, C93
J22; C93
J16, L96, O12, O33
C93, J15, Z29