Mokyr is from Northwestern University, Aghion from the College de France and the London School of Economics, and Howitt from Brown University.
Aghion said he was shocked by the honour. “I can’t find the words to express what I feel,” he said in Stockholm.
He said he would invest his prize money in his research laboratory.
The Nobel committee said Mokyr “demonstrated that if innovations are to succeed one another in a self-generating process, we not only need to know that something works, but we also need to have scientific explanations for why.”
The winners were credited with better explaining and quantifying “creative destruction,” a key concept in economics that refers to the process in which beneficial new innovations replace – and thus destroy – older technologies and businesses.
The concept is usually associated with economist Joseph Schumpeter, who outlined it in his 1942 book “Capitalism, Socialism and Democracy.”
Aghion and Howitt studied the mechanisms behind sustained growth, including in a 1992 article in which they constructed a mathematical model for creative destruction.
“The laureates’ work shows that economic growth cannot be taken for granted. We must uphold the mechanisms that underlie creative destruction, so that we do not fall back into stagnation,” said John Hassler, who chairs the committee for the prize in economic sciences.
The economics prize is formally known as the Bank of Sweden Prize in Economic Sciences in Memory of Alfred Nobel.
The central bank established it in 1968 as a memorial to Nobel, the 19th-century Swedish businessman and chemist who invented dynamite and established the five Nobel Prizes.
Since then, it has been awarded 56 times to a total of 96 laureates. Only three of the winners have been women.
Nobel purists stress that the economics prize is technically not a Nobel Prize, but it is always presented together with the others on December 10, the anniversary of Nobel’s death in 1896.
Last year’s award went to Daron Acemoglu, Simon Johnson and James A Robinson who studied why some countries are rich and others poor and have documented that freer, open societies are more likely to prosper.
Nobel honours were announced last week in medicine, physics, chemistry, literature and peace. (AP)
