Deception

If people expected most conversations to be untruthful, talking and communicating with others would require distraction and misdirection to acquire reliable information.

In fact, sunflower oil is relatively low in omega-3 fatty acids and is not particularly good for brain health, so while this claim is technically true, it leads the receiver to infer false information.

Some Allied navies during World War II used dazzle camouflage painting schemes to confuse observers regarding a naval vessel's speed and heading, by breaking up the ship's otherwise obvious silhouette.

In nature, the defensive mechanisms of most octopuses to eject black ink in a large cloud to aid in escape from predators is a form of camouflage.

For example, depicting an act of war (an attack) as a "peace" mission or "spinning" a kidnapping as a protective custody.

1617), offers multiple examples of the bait-and-switch and fraud techniques involving the stimulation of greed in Ming-dynasty China.

[7] Deception is particularly common within romantic relationships, with more than 90% of individuals admitting to lying or not being completely honest with their partner at one time.

[8] In comparison, deception is more likely to occur in casual relationships and in dating where commitment level and length of acquaintanceship is often much lower.

Infidelity is impacted by attachment style, relationship satisfaction, executive function, sociosexual orientation, personality traits, and gender.

The level of executive control that an individual possesses is impacted by development and experience and can be improved through training and practice.

[22] Research on the use of deception in online dating has shown that people are generally truthful about themselves with the exception of physical attributes to appear more attractive.

He stated that the organizations "goal is to reduce the amount of deception and untruths and unethical behaviors that exist in some facets of religion".

[32] For an example, Taqiya is an Islamic juridical term for the cases in which a Muslim is allowed to lie under the circumstance when need to deny their faith due to force or when faced with persecution.

In 1641 Descartes published his meditations, in which he introduced the notion of the Deus deceptor, a posited being capable of deceiving the thinking ego about reality.

The Deus deceptor is a mainstay of so-called skeptical arguments, which purport to put into question our knowledge of reality.

The rationale for such deception is that humans are sensitive to how they appear to others (and to themselves) and this self-consciousness might interfere with or distort from how they actually behave outside of a research context (where they would not feel they were being scrutinized).

", might result in a high percent of "socially desirable" answers and the researcher would, in any case, be unable to verify the accuracy of these responses.

In general, then, when it is unfeasible or naive to simply ask people directly why or how often they do what they do, researchers turn to the use of deception to distract their participants from the true behavior of interest.

During the process, they might be given the opportunity to look at (secretly, they think) another participant's [presumably highly intuitively correct] answers before handing in their own.

Ortmann and Hertwig (1998) note that "deception can strongly affect the reputation of individual labs and the profession, thus contaminating the participant pool" (p. 806).

In reality the study looked at the participants' willingness to obey commands, even when that involved inflicting pain upon another person.

[35] Use of deception raises many problems of research ethics and it is strictly regulated by professional bodies such as the American Psychological Association.

Although not always, people are able to portray themselves as a different person than reality because of the lack of face-to face communication which allows them to fit in with a specific group they wish to be a part of.

By creating a false identity catfishers deceive those online to build relationships, friendships, or connections without revealing who they truly are as a person.

While it is difficult to deceive a person over a long period of time, deception often occurs in day-to-day conversations between relational partners.

If a response to a question has a lot disturbances, less talking time, repeated words, and poor logical structure, then the person may be lying.

[50] Fear specifically causes heightened arousal in liars, which manifests in more frequent blinking, pupil dilation, speech disturbances, and a higher pitched voice.

The liars that experience guilt have been shown to make attempts at putting distance between themselves and the deceptive communication, producing "nonimmediacy cues".

These can be verbal or physical, including speaking in more indirect ways and showing an inability to maintain eye contact with their conversation partners.

Streeter, Krauss, Geller, Olson, and Apple (1977) have assessed that fear and anger, two emotions widely associated with deception, cause greater arousal than grief or indifference, and note that the amount of stress one feels is directly related to the frequency of the voice.

Deception of woman, with self-portrait by Stanisław Ignacy Witkiewicz , 1927 ( National Museum, Warsaw )
This wallaby has adaptive colouration which allows it to blend with its environment.