Sunday, November 8, 2020

CNN's Van Jones Suffering From Prevalence-Induced Concept Change in Human Judgment - One Screen Two Movies Syndrome - Van Jones: Perceptual and Judgmental Standards Are Creeping - Van Jones: Calm Down Man, Circumstances Really Aren't That Bad - CNN Isn't News

Ed.'s note: What the hell is CNN's Van Jones going on about? Does anyone really know? It is likely Jones doesn't even realize what he is doing going through what is known as "prevalence-induced concept change." Many Democrats and leftists like Van Jones (admitted communist) see racism and bigotry everywhere while the rest of us don't see it that much. Its been described as "one screen, two movies syndrome." Jones' world has been split into two realities. Jones is suffering from a spontaneous hallucination that is reenforced over time. The scientific theory for the vastly different opinions of President Trump and racism: "Prevalence-induced concept change in human judgment." Jones is adamant racism and bigotry exists when in fact racism and bigotry has become less frequent. Watch the CNN show with crocodile tears shed by Jones then read the study republished below. Turn off CNN. You don't need the programming. 


Source: AAAS

Prevalence-induced concept change in human judgment

View ORCID Profile David E. Levari1, View ORCID Profile Daniel T. Gilbert1,*, Timothy D. Wilson2, View ORCID Profile Beau Sievers3, View ORCID Profile David M. Amodio4, View ORCID Profile Thalia Wheatley3

Science 29 Jun 2018:
Vol. 360, Issue 6396, pp. 1465-1467
DOI: 10.1126/science.aap8731

Perceptual and judgment creep

Do we think that a problem persists even when it has become less frequent? Levari et al. show experimentally that when the "signal" a person is searching for becomes rare, the person naturally responds by broadening his or her definition of the signal—and therefore continues to find it even when it is not there. From low-level perception of color to higher-level judgments of ethics, there is a robust tendency for perceptual and judgmental standards to "creep" when they ought not to. For example, when blue dots become rare, participants start calling purple dots blue, and when threatening faces become rare, participants start calling neutral faces threatening. This phenomenon has broad implications that may help explain why people whose job is to find and eliminate problems in the world often cannot tell when their work is done.

Science, this issue p. 1465


Why do some social problems seem so intractable? In a series of experiments, we show that people often respond to decreases in the prevalence of a stimulus by expanding their concept of it. When blue dots became rare, participants began to see purple dots as blue; when threatening faces became rare, participants began to see neutral faces as threatening; and when unethical requests became rare, participants began to see innocuous requests as unethical. This "prevalence-induced concept change" occurred even when participants were forewarned about it and even when they were instructed and paid to resist it. Social problems may seem intractable in part because reductions in their prevalence lead people to see more of them.

The deformation of a solid under load is known as "creep." But in the past few years, that term has crept beyond materials science and has come to describe almost any kind of unintended expansion of a boundary. Software developers worry about feature creep (the unintended expansion of a product's function over time), project managers worry about scope creep (the unintended expansion of a team's mandate over time), and military commanders worry about mission creep (the unintended expansion of a campaign's objectives over time). As it turns out, abstract concepts can creep, too. For example, in 1960, Webster's dictionary defined "aggression" as "an unprovoked attack or invasion," but today that concept can include behaviors such as making insufficient eye contact or asking people where they are from (1). Many other concepts, such as abuse, bullying, mental disorder, trauma, addiction, and prejudice, have expanded of late as well (2). Some take these expansions as signs of political correctness and others as signs of social awakening. We take no position on whether these expansions are good or bad. Rather, we seek to understand what makes them happen. Why do concepts creep?

Psychologists have long known that stimuli are judged in the context of the other relevant stimuli that surround them in space or precede them in time (3–8), and the perceived aggressiveness of a particular behavior will naturally depend on the aggressiveness of the other behaviors the observer is seeing or has seen. When instances of a concept become less prevalent—for example, when unprovoked attacks and invasions decline—the context in which new instances are judged changes as well. If most behaviors are less aggressive than they once were, then some behaviors will seem more aggressive than they once did, which may lead observers to mistakenly conclude that the prevalence of aggression has not declined. When instances of a concept become less prevalent, the concept may expand to include instances that it previously excluded, thereby masking the magnitude of its own decline.

This phenomenon—which we call "prevalence-induced concept change"—can be a problem. When yellow bananas become less prevalent, a shopper's concept of "ripe" should expand to include speckled ones, but when violent crimes become less prevalent, a police officer's concept of "assault" should not expand to include jaywalking. What counts as a ripe fruit should depend on the other fruits one can see, but what counts as a felony, a field goal, or a tumor should not, and when these things are absent, police officers, referees, and radiologists should not expand their concepts and find them anyway. Modern life often requires people to use concepts that are meant to be held constant and should not be allowed to expand (9–16). Alas, research suggests that the brain computes the value of most stimuli by comparing them to other relevant stimuli (17–19); thus, holding concepts constant may be an evolutionarily recent requirement that the brain's standard computational mechanisms are ill equipped to meet (20, 21).

Are people susceptible to prevalence-induced concept change? To answer this question, we showed participants in seven studies a series of stimuli and asked them to determine whether each stimulus was or was not an instance of a concept. The concepts ranged from simple ("Is this dot blue?") to complex ("Is this research proposal ethical?"). After participants did this for a while, we changed the prevalence of the concept's instances and then measured whether the concept had expanded—that is, whether it had come to include instances that it had previously excluded.

In Study 1, we showed participants a series of 1000 dots that varied on a continuum from very purple to very blue (see fig. S1) and asked them to decide whether each dot was or was not blue. After 200 trials, we decreased the prevalence of blue dots for participants in the decreasing prevalence condition but not for participants in the stable prevalence condition. Figure 1 shows the percentage of dots at each point along the continuum that participants identified as blue on the initial 200 trials and on the final 200 trials. The two curves in Fig. 1A are nearly perfectly superimposed, indicating that participants in the stable prevalence condition were just as likely to identify a dot as blue when it appeared on an initial trial as when it appeared on a final trial. But the two curves in Fig. 1B are offset, indicating that participants in the decreasing prevalence condition were more likely to identify dots as blue when those dots appeared on a final trial than when those dots appeared on an initial trial. In other words, when the prevalence of blue dots decreased, participants’ concept of blue expanded to include dots that it had previously excluded. Complete methods and results for this and all subsequent studies may be found in the supplementary materials.

Please go to AAAS to read the entire paper.

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