China’s political leadership recently committed to expanding the proportion of middle-income groups to create a less polarised, and more ‘olive-shaped’, distribution of wealth. This column considers the potential trade-offs between reducing income polarisation and other goals, including poverty reduction.
We present the first comprehensive evidence of how app usage affects academic performance and early career outcomes. App usage is contagious: a one standard deviation (around 3.5 hours per day) increase in roommates’ app usage raises an individual’s own app usage by 5.8%, with substantial heterogeneity across students. A one standard deviation increase in app usage reduces GPAs by 36.2% of a within-cohort-major standard deviation and lowers wages by 2.3%. The effect of roommates’ app usage is over half the size of an individual’s own usage effect. High-frequency GPS data reveal that high app usage crowds out time in study halls and increases late arrivals at and absences from lectures.
The Chinese government supports the development of dozens of industries today, but the long-run sustainability of this model depends crucially on policy efficiency.
In Chinese culture, digit 8 (4) is taken as lucky (unlucky). We find that the numerological superstition has a profound impact across China’s stock, bond and foreign exchange markets, affecting asset prices in both the primary and secondary markets. The superstition effect, i.e., the probability of asset price ending with a lucky (unlucky) digit far exceeds (falls short of) what would be expected by chance, is everywhere.
Local fiscal policies have been very effective in China since 2000.