Deciding whether to pursue a doctorate after a master's: Only enroll if your target role explicitly requires a PhD, and factor in psychological burdens beforehand

In the same UK longitudinal study, after controlling for individual differences, 35-year-old female PhD holders earned roughly 8% more than bachelor's graduates, while male PhD holders earned approximately 9% less. Furthermore, the psychological strain of doctoral training is substantial: roughly one in four PhD students across multiple nations exhibits significant depressive symptoms, and one in six reports notable anxiety. Pursuing a PhD is economically and personally justified primarily when your desired career path makes a doctorate an indispensable requirement.

Zero monetary cost. Check educational prerequisites in job listings for target institutions, and have an in-depth conversation with 2-3 current doctoral candidates.

The 2020 UK Department for Education study cited in Rule 24 also evaluated doctoral degree returns: after adjusting for background and academic performance, 35-year-old PhD holders earned +8% (women) and -9% (men) compared to terminal bachelor's graduates. Doctoral degrees reduced the probability of unemployment and earnings below £30,000 per year, but also reduced the probability of earning over £40,000 compared to certain master's cohorts. Returns varied widely across disciplines: returns for mathematics PhDs were exceptionally low, whereas psychology doctorates yielded some of the highest returns. Regarding psychological strain during doctoral studies, a 2021 meta-analysis aggregating 16 studies encompassing 23,469 PhD students identified significant depressive symptoms in approximately 24% of candidates (95% CI: 18%–31%). Across 9 studies covering 15,626 candidates, clinically relevant anxiety was identified in approximately 17% (95% CI: 12%–23%), with substantial heterogeneity across studies (I² ≈ 98%). Domestic financial frameworks follow the 2013 ministerial guidance: standard tuition for full-time academic doctoral students is capped in principle at 10,000 RMB per academic year, with national graduate stipends mandated at not less than 10,000 RMB per academic year.

Contested / Disputed. The pooled depression and anxiety figures aggregate multinational survey samples without matching against same-age non-academic peer cohorts, utilizing varied psychological screening instruments. They indicate that psychological distress is prevalent among doctoral candidates, but do not isolate doctoral enrollment as the sole causal mechanism. Systematic reviews of Chinese doctoral candidates indicate psychological symptoms are comparable between master's and doctoral students, but both groups score higher than national general population and youth norms. Limitations regarding wage returns mirror Rule 24 and serve as directional reference. University faculty positions, research institutes, and specialized R&D roles frequently mandate a doctorate; candidates targeting academia should review recent recruitment notices at target institutions before committing. If persistent depressive symptoms endure for over two weeks during doctoral studies, follow the initial steps outlined in Chapter 3, Rule 18 (steps to take when feeling depressed); if experiencing suicidal thoughts, call 12356 or emergency mental health crisis hotlines immediately, as detailed in Chapter 1, Rule 25.

Britton J, Buscha F, Dickson M, van der Erve L, Vignoles A, Walker I, Waltmann B, Zhu Y (2020). The earnings returns to postgraduate degrees in the UK. Department for Education. https://assets.publishing.service.gov.uk/media/5f609e478fa8f5106d1563cc/PG_LEO_report_FINAL.pdf；Satinsky EN, Kimura T, Kiang MV, et al. (2021). Systematic review and meta-analysis of depression, anxiety, and suicidal ideation among Ph.D. students. Scientific Reports, 11, 14370. https://doi.org/10.1038/s41598-021-93687-7；Liu H, Gao Y, Tuerxun N, Cabirou L (2026). More than Depression: Doctoral Students' Mental Health in China: A Systematic Review and Meta-Analysis. Behavioral Sciences, 16, 1355. https://doi.org/10.3390/bs16081355；财政部、国家发展改革委、教育部 (2013). 关于完善研究生教育投入机制的意见（财教〔2013〕19号）. https://www.gov.cn/gongbao/content/2013/content_2404719.htm