“…Using the World Bank Classification, students were recruited from a mix of high income ( n =39), upper middle income ( n =29), and lower middle income ( n =22) countries, with only two studies conducted in low income countries [ 82 , 120 ]. The majority of included studies were conducted in Asia ( n =34) and the Middle East ( n =21): nine were in Pakistan [ 49 , 51 , 53 , 54 , 86 , 98 , 101 , 104 , 115 ], seven in Saudi Arabia [ 41 , 45 , 46 , 48 , 58 , 80 , 85 ], seven in the People's Republic of China [ 62 , 78 , 84 , 88 , 112 , 124 , 127 ] and five in Egypt [ 42 , 43 , 70 , 73 , 106 ].…”