Analyze the instances of war after WWII. Found that if one country has indirect military alliances with others, then it is unlikely to have military conflict. This is because with alliances fighting with one countries means fighting with a whole lot of countries.
Meta-meta-analysis of factors in success in higher education. Factors in teaching and characteristics of students are discussed. the stimulation of meaningful learning by presenting information in a clear way, relating it to the students, and using conceptually demanding learning tasks.
Development of theory of mind (TOM). Believed earlier that only 4yos can manage the false-belief task. But contradictory evidence accumulates. The authors say that less than 4 yo can understand false beliefs but have difficulty representing it.
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Indirect military alliances reduce war | Science
APA PsycNet
Early False-Belief Understanding