
Animal Spirits
Table of Contents What Are Animal Spirits? Understanding Animal Spirits Animal Spirits in Finance Examples of Animal Spirits Critiques of Animal Spirits Table of Contents What Are Animal Spirits? Understanding Animal Spirits Animal Spirits in Finance Examples of Animal Spirits Critiques of Animal Spirits Animal spirits can give rise to bubbles in asset prices, and also can lead to panic selling. According to the theory behind animal spirits, the decisions of business leaders are based on intuition and the behavior of their competitors rather than on solid analysis. In 2009, the term animal spirits returned to popularity when two economists — George A. Akerlof (Nobel laureate and professor of economics at University of California) and Robert J. Shiller (professor of economics at Yale University) — published their book, _Animal Spirits: How Human Psychology Drives the Economy, and Why it Matters for Global Capitalism_. Animal spirits represent the emotions of confidence, hope, fear, and pessimism that can affect financial decision-making, which in turn can fuel or hamper economic growth.

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What Are Animal Spirits?
"Animal spirits" is a term coined by the famous British economist, John Maynard Keynes, to describe how people arrive at financial decisions, including buying and selling securities, in times of economic stress or uncertainty. In Keynes’s 1936 publication, The General Theory of Employment, Interest, and Money, he speaks of animal spirits as the human emotions that affect consumer confidence.
Today, animal spirits describe the psychological and emotional factors that drive investors to take action when faced with high levels of volatility in the capital markets. The term comes from the Latin spiritus animalis, which means "the breath that awakens the human mind." In some ways, Keynes' insights into human behavior predicted the rise of behavioral economics.





Understanding Animal Spirits
The technical concept of spiritus animalis can be traced as far back as 300 B.C., in the fields of human anatomy and medical physiology. There, animal spirits applied to the fluid or spirit present in sensory activities and nerve endings in the brain that resulting in mass psychological phenomena like manias or hysterias.
Animal spirits also appeared in literary culture, where they referred to states of physical courage, gaiety, and exuberance. The literary meaning implies that animal spirits can be high or low depending on an individual's degree of health and energy.
Animal Spirits in Finance and Economics
Today in finance, the term animal spirits arise in market psychology and behavioral economics. Animal spirits represent the emotions of confidence, hope, fear, and pessimism that can affect financial decision-making, which in turn can fuel or hamper economic growth. If spirits are low, then confidence levels will be low, which will drive down a promising market — even if the market or economy fundamentals are strong. Likewise, if spirits are high, confidence among participants in the economy will be high, and market prices will soar.
Animal spirits can give rise to bubbles in asset prices, and also can lead to panic selling.
The Role of Emotion in Business Decisions
According to the theory behind animal spirits, the decisions of business leaders are based on intuition and the behavior of their competitors rather than on solid analysis. Keynes understood that in times of economic upheaval, irrational thoughts might influence people as they pursue their financial self-interests.
Keynes further posited in The General Theory that trying to estimate the future yield of various industries, companies, or activities using general knowledge and available insight "amounts to little and sometimes to nothing." He proposed that the only way people can make decisions in an uncertain environment is if animal spirits guide them.
Animal Spirits Enter the 21st Century
In 2009, the term animal spirits returned to popularity when two economists — George A. Akerlof (Nobel laureate and professor of economics at University of California) and Robert J. Shiller (professor of economics at Yale University) — published their book, Animal Spirits: How Human Psychology Drives the Economy, and Why it Matters for Global Capitalism.
Here, the authors argue that although animal spirits are important, it is equally important that the government actively intervene to control them — via economic policymaking — when necessary. Otherwise, the authors postulate, the spirits might follow their own devices — that is, capitalism could get out of hand, and result in the kind of overindulgence that we saw in the 2008 financial crisis.
Examples of Animal Spirits
The Dotcom Bubble
Animal spirits often manifest as market psychology defined by either fear or greed. For the latter, the term "irrational exuberance" has been used to describe investor enthusiasm that drives asset prices far higher than those assets' fundamentals justify. Simply tacking on "dotcom" to the name of a company increased its market value to extraordinary levels, with startups showing zero earnings commanding ever-higher share prices.
The crash that followed saw the Nasdaq index, which had risen five-fold between 1995 and 2000, tumble from a peak of 5,048.62 on March 10, 2000, to 1,139.90 on Oct 4, 2002, a 76.81% fall. By the end of 2001, most dot-com stocks had gone bust.
The Great Recession
Another example was the lead-up to the 2008-09 financial crisis and the Great Recession, when the markets were rife with financial innovations. Creative use of both new and existing financial products — like collateralized debt obligations (CDOs) — abounded, particularly in the housing market. Initially, this trend was thought to be positive, that is until the new financial instruments were found to be deceptive and fraudulent. At this point, investor confidence plummeted, a sell-off ensued, and the markets plunged. A clear case of animal spirits run amok.
Critiques of Animal Spirits
"Animal spirits" refers to the tendency for investment prices to rise and fall based on human emotion rather than intrinsic value. This theory, however, has been critiqued by some economists who argue that markets are nonetheless efficient and that individual irrationality washes out in the aggregate. The animal spirits thesis, like behavioral economics, essentially throws a monkey wrench into the assumptions of efficiency and rationality.
Other critics argue that bubbles are not the result of mass psychology, but are due to the over-involvement of central banks and too much regulation, which stymie economic growth and throw markets out of equilibrium. These arguments often stem from Austrian economic theory or libertarianism that asserts that large increases in the money supply ("printed" by governments) are the cause of bubbles and their ultimate demise by encouraging malinvestment.
Related terms:
Adaptive Market Hypothesis (AMH)
The adaptive market hypothesis (AMH) combines principles of the widely utilized efficient market hypothesis (EMH) with behavioral finance. read more
Behavioral Economics
Behavioral Economics is the study of psychology as it relates to the economic decision-making processes of individuals and institutions. read more
Bubble Theory
Bubble theory is a theory that markets occasionally push prices above their true values, leading to large or persistent overvaluations in asset prices read more
Bubble
A bubble is an economic cycle that is characterized by a rapid economic expansion followed by a contraction. read more
Consumer Confidence Index (CCI)
The Consumer Confidence Index is a survey that measures how optimistic or pessimistic consumers are regarding their expected financial situation. read more
Collateralized Debt Obligation (CDO)
A collateralized debt obligation (CDO) is a complex financial product backed by a pool of loans and other assets and sold to institutional investors. read more
Dotcom Bubble
The dotcom bubble was a rapid rise in U.S. equity valuations fueled by investments in internet-based companies during the bull market in the late 1990s. read more
Economics : Overview, Types, & Indicators
Economics is a branch of social science focused on the production, distribution, and consumption of goods and services. read more
Emotional Neutrality
Emotional neutrality is the concept of removing greed, fear, and other human emotions from financial or investment decisions. read more
Financial Analysis
Financial analysis is the process of assessing specific entities to determine their suitability for investment. read more