I21, I25, Q54
C93 Field Experiments, D91 Role and Effects of Psychological, Emotional, Social, and Cognitive
I21 ; I38 ; J24 ; O12 ; O15
I20, I21
I21 - Analysis of Education
I21, J16.
I21, I25, J24, O15
D90 D91 D83 I12 I18 I21 O35
D91 - Role and Effects of Psychological, Emotional, Social, and Cognitive Factors on Decision
Making; J13 - Fertility • Family Planning • Child Care • Children • Youth; I20 – Education and Research Institutions - General
I21, I25, J16, C93