Irving Fisher - Work

Fisher's work was very varied. He wrote extensively about all the issues he was concerned with, including health and lifestyle. In fact one of his best sellers was a work written in 1915:

• How to live: rules for healthful living based on modern science

His initial training as a mathematician influenced his work a great deal and as can be seen from the titles of his works, he focused considerably on the links between maths and economics:

• Mathematical investigations in the theory of value and prices (1892)
• Nature of capital and income (1906)
• Rate of interest (1907)
• Purchasing power of money (1911)
• The making of index numbers (1922)
• Theory of interest (1930)

Many of these works developed theories that we still consider today about investment appraisal and the behaviour of the rate of interest. However, he is now best remembered not for his flamboyant and eccentric lifestyle (or his invention of a now widely-used card index system), but for the Fisher Equation of Exchange. For some more details on this and its importance, follow the link below about his theories.

Biography | Work | Theories