Amidst its popularity in political research, the feeling thermometer has also assisted in both psychological and sociological research as well as in the medical field. Research has been conducted to identify individuals' feelings towards different social groups and societal issues such as quality of life, economics and environmental issues. Additionally, case studies have been carried out to identify the burden of various diseases and the extent of pain an individual may be in, due to their medical condition or illness. As the feeling thermometer can be used to measure the effect of diseases on populations, it is often incorporated into research, for example, in conjunction with the
Crohn's Disease Activity Index. In this study about the effects of Crohn's Disease, patients conducted a questionnaire containing the feeling thermometer to report their health and the burden of both the disease and its specific treatment. The feeling thermometer was effective in measuring their health outcomes and provided "a quick and accurate assessment of the burden of Crohn's disease on patients"
[3] which supported the other research tools used and identified common issues. Its ability to analyse and represent large groups of data efficiently allows for the tool to be used on a wide-scale such as for international collection of data as explored in
Use in the political sphere. A variation of the feeling thermometer has also become highly popular amongst psychologists and behavioural therapists to explore emotions of clients and help identify them. The same concept of connecting a particular area of the scale to a feeling is used, although, to simplify the identification process, colours replace the numbers. Thus, 0 degrees is represented with light green or blue to signify cold, unfavourable feelings such as apathy and 100 degrees depicting happy, warm emotions. However, this model varies between thermometers depending on what outcome the behavioural therapist is seeking to achieve. For cognitive behavioural therapists, clients can be asked to create their own feeling thermometers to "recognise emotions in self and others, regulate and manage strong emotions (positive and negative), and recognising strengths and areas of need." Allowing individuals to express their emotions using their own methodologies helps the results to be more accurate and is also an effective classroom learning strategy. Thus, teachers have incorporated this tool to help students communicate their emotions without the pressure of talking and trying to recognise their feelings. == Limitations and criticisms ==