‘Imagine how much harder physics would be if electrons had feelings.’ –Richard Feynman

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Trivers (1976) introduced his theory of self-deception over three decades ago. According to his theory, individuals deceive themselves to better deceive others by placing truthful information in the unconscious while consciously presenting false information to others as well as the self without leaving cues to be detected of deception. […]

Humans and other primates live in hierarchical social groups where status influences resource distribution. High-status individuals who attained their position either by force or social intelligence have more resources than low-status individuals and have the power to punish the latter for rule violations. Low-status individuals who are under constant surveillance often attempt to hide resources from high-status individuals. In this case, low-status individuals should be more motivated to deceive, whereas high-status individuals should be more motivated to detect deception. High-status individuals have more honest means (through force or by changing the rules) to acquire resources than do low-status individuals. High-status individuals also have more resources—including information leading to the deception detection—and the means to punish deceivers. In contrast, low-status individuals are more limited detectors who may face revenge for detecting deception. Detecting deception does not enhance fitness if the detector is unable to punish but may be retaliated by the deceiver. There is thus more pressure to perfect deception when one has the need to deceive but also faces increased chances to be caught and punished. The same pressure to better deceive is much reduced when one expects little punishment from the detector if caught deceiving or has other honest means to pursue the same fitness gains. Social status may therefore shift selection pressure to favor low-status individuals over high-status individuals as fearful deceivers and the high-status individuals over low-status individuals as vigilant detectors. Thus, Trivers’ arms race between deception and detection is likely to have played out between low-status deceivers and high-status detectors, leading to people deceiving themselves to better deceive high- rather than low- or equal-status others. […]

According to Trivers (2000), a blatant deceiver keeps both true and false information in the conscious mind but presents only falsehoods to others. In doing so, the deceiver may leave clues about the truth due to its conscious access. A self-deceiver keeps only false information in consciousness. Lying to others and to the self at the same time, the self-deceiver thus leaves no clues about the truth retained in the unconscious mind. […]

Memory and its distortion may be temporarily employed first to keep truthful information away from both self and others and later to retrieve accurate information to benefit the self. Using a dual-retrieval paradigm, we tested the hypothesis that people are likely to deceive themselves to better deceive high- rather than equal-status others.

College student participants were explicitly instructed (Study 1 and 2) or induced (Study 3) to deceive either a high-status teacher or an equal-status fellow student. When interacting with the high- but not equal-status target, participants in three studies genuinely remembered fewer previously studied items than they did on a second memory test alone without the deceiving target.

The results support the view that self-deception responds to status hierarchy that registers probabilities of deception detection such that people are more likely to self-deceive high- rather than equal-status others.

{ Evolution Psychology | PDF }

art { Eric Yahnker }