How Much Will Climate Change Reduce Productivity in a High-Technology Supply Chain? Evidence from Silicon Wafer Manufacturing.

The frequency of hot days in much of the world is increasing. What is the impact of high temperatures on productivity? Can technology-based adaptation mitigate such effects of climate change? We provide some answers to these questions by examining how high outdoor temperatures affect a high-technology, precision manufacturing setting. Exploiting individual-level data on the quantity and quality of work done across 35,190 worker-shifts in a leading NYSE-listed silicon wafer maker in China, we evidence a negative effect of outdoor heat on productivity. The effects are large: in our preferred linear specification, an increase in wet bulb temperature of 10∘C causes a reduction in output of 8.3%. Temperature effects exist even though the manufacturer's work-spaces are indoors and protected by high-quality climate control systems. Results are not driven by extreme weather events and are robust to alternative modelling approaches. They illustrate the potential future adverse economic effects of climate change in most of the industrialised world.

The economics of vocation or 'why is a badly paid nurse a good nurse'?

Given the longstanding shortage of nurses in many jurisdictions, why could not nursing wages be raised to attract more people into the profession? We tell a story in which the status of nursing as a 'vocation' implies that increasing wages reduces the average quality of applicants attracted. The underlying mechanism accords with the notion that increasing wages might attract the 'wrong sort' of people into the profession and highlights an (in)efficiency wage mechanism, particular to vocations, which makes wages sticky up wards. The analysis has implications for job design in vocation-based sectors such as nursing and teaching.

Relationship between vision impairment and ability to perform activities of daily living.

PURPOSE: To determine the relationship between clinical measures of vision impairment and the ability to perform activities of daily living (ADLs). METHODS: One hundred and twenty subjects with low vision from a variety of causes participated in the study. Vision impairment was assessed under binocular conditions by measuring distance visual acuity, near word acuity, Melbourne Edge Test contrast sensitivity, Pelli-Robson Chart contrast sensitivity and visual fields. The ADL performance was assessed using the Melbourne Low Vision ADL Index (MLVAI), which is in part an observed performance assessment of instrumental ADLs and in part a self-report assessment of basic self-care ADLs. RESULTS: All vision measures had a high, statistically significant correlation with MLVAI total score. Near word acuity, had the strongest correlation (r(s) = -0.86, p < 0.001), followed by Melbourne Edge Test contrast sensitivity (r(s) = 0.80, p < 0.001). Visual field had the weakest correlation (r(s) = 0.56, p < 0.001). Together, age, near word acuity, Melbourne Edge Test contrast sensitivity and visual field accounted for 82.2% (adjusted R2, p < 0.001) of the variance in MLVAI total score. All correlations obtained were higher for the observed performance assessment of instrumental ADLs than for the self-report assessment of basic self-care ADLs. CONCLUSIONS: Clinical vision impairment measures are highly correlated with capacity to perform ADLs, as measured by the MLVAI.