Displacement activities occur when an animal experiences high

motivation Motivation is the reason for which humans and other animals initiate, continue, or terminate a behavior at a given time. Motivational states are commonly understood as forces acting within the agent that create a disposition to engage in goal-dire ...

for two or more conflicting behaviours: the resulting displacement activity is usually unrelated to the competing motivations. Birds, for example, may peck at grass when uncertain whether to attack or flee from an opponent; similarly, a human may scratch their head when they do not know which of two options to choose. Displacement activities may also occur when animals are prevented from performing a single behaviour for which they are highly motivated. Displacement activities often involve actions which bring comfort to the animal such as scratching, preening, drinking or feeding. In the assessment of animal welfare, displacement activities are sometimes used as evidence that an animal is highly motivated to perform a behaviour that the environment prevents. One example is that when hungry hens are trained to eat from a particular food dispenser and then find the dispenser blocked, they often begin to pace and preen themselves vigorously. These actions have been interpreted as displacement activities, and similar pacing and preening can be used as evidence of frustration in other situations.Duncan, I.J.H., (1970). Frustration in the fowl. In "Aspects of Poultry Behaviour" B.M. Freeman and R.F. Gordon, eds. British Poultry Science Ltd., Edinburgh. pp.15–31 Psychiatrist and primatologist Alfonso Troisi proposed that displacement activities can be used as non-invasive measures of stress in

primates Primates are a diverse order of mammals. They are divided into the strepsirrhines, which include the lemurs, galagos, and lorisids, and the haplorhines, which include the tarsiers and the simians ( monkeys and apes, the latter including ...

. He noted that various non-human primates perform self-directed activities such as grooming and scratching in situations likely to involve anxiety and uncertainty, and that these behaviours are increased by

anxiogenic An anxiogenic or panicogenic substance is one that causes anxiety. This effect is in contrast to anxiolytic agents, which inhibits anxiety. Together these categories of psychoactive compounds may be referred to as anxiotropic compounds. Anxiogeni ...

(anxiety-producing) drugs and reduced by

anxiolytic An anxiolytic (; also antipanic or antianxiety agent) is a medication or other intervention that reduces anxiety. This effect is in contrast to anxiogenic agents which increase anxiety. Anxiolytic medications are used for the treatment of anxiet ...

(anxiety-reducing) drugs. In humans, he noted that similar self-directed behaviour, together with aimless manipulation of objects (chewing pens, twisting rings), can be used as indicators of "stressful stimuli and may reflect an emotional condition of negative affect".Troisi, A., (2002). Displacement activities as a behavioral measure of stress in non-human primates and human subjects. Stress, 5: 47–54 More recently the term 'displacement activity' has been widely adopted to describe a form of procrastination. It is commonly used in the context of what someone does intentionally to keep themselves busy whilst, at the same time, avoiding doing something else that would be a better use of their time.

History of the concept

The subsequent development of research on displacement activities was a direct consequence of

Konrad Lorenz Konrad Zacharias Lorenz (; 7 November 1903 – 27 February 1989) was an Austrian zoologist, ethologist, and ornithologist. He shared the 1973 Nobel Prize in Physiology or Medicine with Nikolaas Tinbergen and Karl von Frisch. He is often regarde ...

's works on instincts. However, the first mentions of the phenomenon came in 1940 by the two Dutch researchers

Nikolaas Tinbergen Nikolaas "Niko" Tinbergen (; ; 15 April 1907 – 21 December 1988) was a Dutch biologist and ornithologist who shared the 1973 Nobel Prize in Physiology or Medicine with Karl von Frisch and Konrad Lorenz for their discoveries concerning the ...

and Adriaan Kortlandt. Tinbergen in 1952 noted, for example, that "two skylarks engaged in furious combat aysuddenly peck at the ground as if they were feeding", or birds on the point of mating may suddenly begin to preen themselves. Tinbergen adopted the term "displacement activities" because the behaviour appeared to be displaced from one behavioural system into another.Fraser, D. (2008). Understanding Animal Welfare: The Science in its Cultural Context. Wiley-Blackwel

/ref> In 1902, in ''

The Little White Bird ''The Little White Bird'' is a novel by the Scottish writer J. M. Barrie, ranging in tone from fantasy and whimsy to social comedy with dark, aggressive undertones. It was published in November 1902, by Hodder & Stoughton in the UK and Scribn ...

'', J. M. Barrie refers to sheep in Kensington Gardens nibbling the grass in nervous agitation immediately after being shorn, and to Solomon, the wise crow, drinking water when he was frustrated and outwitted in an argument with other birds. Another bird encourages him to drink in order to compose himself. These references to displacement activities in a work of literature indicate that the phenomenon was well recognized at the turn of the twentieth century. A further early description of a displacement activity (though not the use of the term) is by

Julian Huxley Sir Julian Sorell Huxley (22 June 1887 – 14 February 1975) was an English evolutionary biologist, eugenicist, and internationalist. He was a proponent of natural selection, and a leading figure in the mid-twentieth century modern synthesis. ...

in 1914.Huxley J. 1970. ''Memories''. Allen & Unwin, London, p89–90.

References

External links

Cats international
about displacement activities with cats. {{Authority control Ethology

History of the concept

See also

References

External links