Too hot to carry on? Disinclination to persist at a task in a warm office environment

Abstract We investigated the effect of an elevated ambient temperature on performance in a persistence task. The task involved the coding of incorrect symbols and participants were free to decide how long to spend performing this task. Applying a between-subject design, we tested 125 students in an office-like environment in one of the three temperature conditions. The comfort condition (Predicted Mean Vote [PMV] = 0.01) featured an average air temperature of 24 °C. The elevated ambient temperature condition was 28 °C (PMV = 1.17). Condition three employed an airstream of approximately 0.8 m/s, intended to compensate for performance decrements at the elevated air temperature (28 °C, PMV = 0.13), according to Fanger’s thermal comfort equation. Participants in the warm condition were significantly less persistent compared with participants in the control and compensation conditions. As predicted by the thermal comfort equation, the airstream seemed to compensate for the higher temperature. Participants’ persistence in the compensation and comfort conditions did not differ. Practitioner Summary: A laboratory experiment involving a simulated office environment and three ambient temperature conditions (24 °C, 28 °C and 28 °C plus airstream) showed that persistence at a task is significantly impaired at 28 °C. An airstream of 0.8 m/s at 28 °C compensated for the disinclination to persist with the task.

[1]  P. O. Fanger,et al.  Thermal comfort: analysis and applications in environmental engineering, , 1972 .

[2]  N. Feather,et al.  The study of persistence. , 1962, Psychological bulletin.

[3]  R. de Dear,et al.  The adaptive model of thermal comfort and energy conservation in the built environment , 2001, International journal of biometeorology.

[4]  D. Wyon,et al.  The effects of moderate heat stress on mental performance. , 1979, Scandinavian journal of work, environment & health.

[5]  R. K. Macpherson,et al.  Thermal stress and thermal comfort. , 1973, Ergonomics.

[6]  Amar Cheema,et al.  Influence of Warm versus Cool Temperatures on Consumer Choice: A Resource Depletion Account , 2012 .

[7]  G. Clausen,et al.  The effects of moderate heat stress and open-plan office noise distraction on SBS symptoms and on the performance of office work. , 2004, Indoor air.

[8]  Lee Taylor,et al.  The Impact of Different Environmental Conditions on Cognitive Function: A Focused Review , 2016, Front. Physiol..

[9]  A. Hwang.  [Thermal comfort]. , 1990, Taehan kanho. The Korean nurse.

[10]  James L. Szalma,et al.  A Meta-Analysis of Performance Response Under Thermal Stressors , 2007, Hum. Factors.

[11]  D McIntyre.  A guide to thermal comfort. , 1973, Applied ergonomics.

[12]  D. Hecker,et al.  Occupational changes during the 20th century , 2006 .

[13]  J. van Hoof.  Forty years of Fanger's model of thermal comfort: comfort for all? , 2008, Indoor air.

[14]  P. Wargocki,et al.  Literature survey on how different factors influence human comfort in indoor environments , 2011 .

[15]  S Hygge,et al.  Thermal stress and human performance. , 1990, Scandinavian journal of work, environment & health.

[16]  Standard Ashrae.  Thermal Environmental Conditions for Human Occupancy , 1992 .

[17]  F N Dukes-Dobos,et al.  Hazards of heat exposure. A review. , 1981, Scandinavian journal of work, environment & health.

[18]  P. Hancock,et al.  A Dynamic Model of Stress and Sustained Attention , 1989, Human factors.

[19]  Sebastien Racinais,et al.  Sensory displeasure reduces complex cognitive performance in the heat , 2012 .

[20]  G B Meese,et al.  A laboratory study of the effects of moderate thermal stress on the performance of factory workers. , 1984, Ergonomics.

[21]  Roger Haslam,et al.  Ergonomics at 60: mature, thriving and still leading the way , 2017, Ergonomics.