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Evolutionary Psychopathology Quotes

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Evolutionary Psychopathology Quotes

“Starting from middle childhood, however, boys and girls begin to take part in different social worlds with specific sets of challenges; moreover, sex differences in muscle mass and strength, bone density, and adiposity become more pronounced, giving boys a definite advantage in dealing with physical danger.”

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Book:Evolutionary Psychopathology: A Unified Approach
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“On average, women are more physically vulnerable than men and less able to defend themselves against attacks. Accordingly, it is adaptive for them to be more sensitive to potential cues of vulnerability and entrapment, and display a lower threshold for the activation of escape behaviors.”

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Book:Evolutionary Psychopathology: A Unified Approach
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“An evolutionary perspective also contributes to explain the higher female prevalence of panic disorder and agoraphobia. On average, women are more physically vulnerable than men and less able to defend themselves against attacks. Accordingly, it is adaptive for them to be more sensitive to potential cues of vulnerability and entrapment, and display a lower threshold for the activation of escape behaviors.”

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“Women suffer higher rates of depression than men because their survival and reproduction depends more critically on the integrity of social networks (which provide help, protection, and resources). For this reason, they have a stronger evolved motivation to avoid social stressors, a lower tolerance for cues of social conflict, and more intense emotional responses when conflicts break out.”

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“Fear of heights begins to manifest as soon as infants start crawling; fears of animals and monsters first appear when toddlers begin to move around more freely and explore their environment. In middle childhood, children become more autonomous and start helping with adult tasks; this is when fears of accidents and injuries become more pronounced.”

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Book:Evolutionary Psychopathology: A Unified Approach
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“Fear of heights begins to menifest as soon as infants start crawling; fears of animals and monsters first appear when toddlers begin to move around more freely and explore their environment. In middle childhood, children become more autonomous and start helping with adult tasks; this is when fears of accidents and injuries become more pronounced.”

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“Evolutionary models of phobias share the assumption that evolution has equipped us with a predisposition to fear certain targets more than others. In modern conditions, this evolved repertoire creates a high potential for mismatch, focusing defensive systems on negligible threats while downplaying some real and potentially lethal dangers.”

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“But in the mood d1sorders, uni- and bipolar, we see a return to more primitive, primary process ruminating without the loss of adult cognitive rules. Major depression is a return to a primitive hibernation state without the wholesale collapse in logical processes that we see in schizophrenia. It shifts the usual thought pattern from secondary to primary process thinking, the embattled autopilot of the past six million years or so. If happiness is a modern invention, depressives return to the affective state of the hibernating cave dweller. Mania, on the other hand, is a desperate flight from dreaded depression and encapsulates the level of primitivity imposed by it.”

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Book:Footprints of Schizophrenia: The Evolutionary Roots of Mental Illness
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“We are no longer in that primitive state of mind. We have an expectation of survival and have conquered most of the obvious predators that plagued us day to day with our superlative contemplation skills born of language. We sit in our comfy heated houses while the snow flutters like butterflies around us and we bask in a feeling of general contentment.”

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Book:Footprints of Schizophrenia: The Evolutionary Roots of Mental Illness
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“The epidemiological evidence for sexual dimorphism in humans is extensive. Sexual dimorphism in body composition is already evident in infancy: males tend to be heavier than females at birth and have longer bodies and larger head circumferences. By early adulthood, sexual dimorphism in fat distribution is highly evident. These are the evolutionary roots of male sensitivity to visual cues of female physical attractiveness and also of women's motivation to display, preserve and improve their physical attractiveness and thus increase their perceived mate value. The extreme end of this adaptation gives rise to the risk of EDs in the modern environment.”

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Book:Evolutionary Psychiatry: Current Perspectives on Evolution and Mental Health
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“To understand mismatch, we should note that yhe human lineage lived for 99% of its evolutionary history in relatively small, mobile, foraging, kin-based groups. It is under these conditions that human psychological mechanisms were shaped by selection. The seeds for mismatch were sown with the advent of agriculture, which resulted in permanently settled living around 10,000 - 20,000 years ago, and this radically altered the human physical and social environment with major implications for eating disorders EDs.”

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“To understand mismatch, we should note that the human lineage lived for 99% of its evolutionary history in relatively small, mobile, foraging, kin-based groups. It is under these conditions that human psychological mechanisms were shaped by selection. The seeds for mismatch were sown with the advent of agriculture, which resulted in permanently settled living around 10,000 - 20,000 years ago, and this radically altered the human physical and social environment with major implications for eating disorders EDs.”

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Book:Evolutionary Psychiatry: Current Perspectives on Evolution and Mental Health
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“In place of a process that 'others' distressed people, we can look for ways to 'belong' them. For sure they do belong, and the belonging begins on a vast scale. As a regular human being, having inherited protections that kept every one of their ancestors alive at least long enough to start a family, the patient can consider themselves well equipped to handle, in their own time and in their own way, whatever lies ahead. They possess a genius for survival that has accumulated over countless generations; in this real sense, all of their fore -fathers and mothers- are on their side.”

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Book:Evolutionary Psychiatry: Current Perspectives on Evolution and Mental Health
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“The Sexual Competition Hypothesis is based on the fact that throughout human evolutionary history the female shape has been a reliable indicator of the female's reproductive history and reproductive potential. The same is not true for men, where physical appearance, while relevant, is much less useful in assessing a man's reproductive potential. The visual signal for a female's peak reproductive potential in ancestral environments was the female's nubile shape, which was generally short-lived and declined with the repeated cycles of gestation and lactation.”

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Book:Evolutionary Psychiatry: Current Perspectives on Evolution and Mental Health
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“It is hard to overstate the biological significance of obsessions, compulsions and the psychological mechanisms that produce them. On the one hand, compulsions bear striking similarities to various repetitive, ritualized behaviors observed in other animals --including self-grooming, food inspection and washing, and checking for predators. On the other hand, cultural rituals --which also share several features with OCD symptoms-- perform a range of important functions in human societies, from group coordination in social and religious ceremonies to the transmission of knowledge between generations.”

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Book:Evolutionary Psychopathology: A Unified Approach
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“Beliefs about overimportance of thoughts and thought control are more frequent in highly religious people and mediate the observed association between religiosity and OCD. Thought-action fusion overlaps with magical thinking and is associated with religiosity, paranormal beliefs, and positive schizotypy. most likely, thought-action fusion plays a significant role in the etiology of autogenous obsessions.”

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“The pubertal surge of sex hormones plays a major role in the onset of eating symptoms in females, as shown by the fact that the heritability of Eating Disorders increases sharply at mid-puberty in girls, but not in boys. In particular, binge eating is strongly modulated by the interaction of estrogens and progesterone acrosss the menstrual cycle, consistent with the role played by these hormones in the regulation of hunger and feeding. Both the frequency of bingeing and its heritability peak after ovulation, in tandem with rising progesterone levels.”

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“Evolutionary scholars have long stressed the adaptive role of aggressive and antisocial behavior as a high-risk strategy for social and mating competition. In evolutionary psychopathology, antisocial disorders are usually regarded as costly but potentially adaptive strategies rather than behavioral dysfunctions. Some authors have focused specifically on the evolution of psychopathy, and argued that this condition embodies a "cheater" social strategy designed to exploit other people's trust and cooperative behavior while avoiding reciprocation.”

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“The sexual competition model of eating disorders has two interlocking components. The first component is based on the universal male preference for a nubile -hourglass- body shape and the fact that women tend to accumulate body weight as they age, with the result that relative thinness is a reliable cue of youth and reproductive potential. The second component is specific to modern societies: as fertility declines and the age of reproduction shifts upward, women tend to retain an attractive nubile shape for longer, which increases the importance of thinness as an attractive display. At the same, a number of converging trends contribute to intensify real and perceived mating competition among women, especially for long-term partners. Specifically, socially imposed monogamy reduces the number of available men; urban living dramatically increases the number of potential desirable competitors; and the media paint a visual landscape full of unrealistically thin, attractive women. The net outcome of these social changes is a process of runaway sexual competition that leads to an exaggerated desire for thinness in girls and women. Ironically, the process is largely driven by female intrasexual competition rather than direct male choice, and the resulting -ideal body- may be too thin to be maximally attractive to men.”

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“Mortality in Eating Disorders is partly caused by the medical complications of starvation and bingeing-purging, but suicide risk is also elevated. Suicide accounts for about 20% of deaths in anorexic patients; unsurprisingly, the risk is higher in AN-Bingeing/Purging than in AN-Restricted.”

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“Disorders in the psychosis spectrum (schizophrenia spectrum disorder and dipolar disorder) have similar prevalance in males and females (with slightly higher male risk for schizophrenia), while men are more likely to be diagnosed with NPS (narcissistic personality disorder) than are women.”

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“Evolution in the cognitive niche has endowed our species with remarkable abilities such as language, abstract reasoning, and sophisticated mentalizing. These species-typical innovations have been accompanied by rapid changes in brain structure and functionality. While adaptations such as language are hugely beneficial, they are also likley to carry some costs. A number of authors have argued that vulnerability to psychosis is one of those costs -the price our species pays for its unique set of cognitive skills. From this perspective, there are no individual fitness benefits to psychosis proneness; vulnerability to schizophrenia and other psychoses is a general byproduct of our evolved design, and unfortunate combinations of genetic and environmental factors determine the onset of a full-fledged disorder in some individuals.”

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Book:Evolutionary Psychopathology: A Unified Approach
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“Even properly functioning defenses are subject to activation errors, evolutionary/developmental mismatches and maladaptive learning; moreover, mechanisms that are initially functional may become damaged or dysregulated following periods of chronic hyperactivation. In other words, conditions that start as adaptive response may sometimes morph into dysfuntions along the way.”

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“Runaway competition for thinness generates an evolutionary mismatch, which drives up the risk of maladaptive eating symptons; in particular Abed suggested that AN arises as a direct consequence of competition for thiness, whereas BN may stem from attempts to maintaina nubile body shape.”

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“Androgens in Eating Disorders show an intriguing pattern: while anorexics tend to have low testosterone, there are indications that bulimia is associated with exposure to high levels of prenatal androgens. In addition, polycystic ovarian syndrome (PCOs, a condition caused by elevated androgens) has been associated with increased BN risk but decreased AN risk.”

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“Social anxiety plays an important role in status competition as a behavioral defense against rejection and defeat. Intense social anxiety is especially adaptive for subordinate or unattractive individuals who need to avoid further status losses. However, excessive or misplaced anxiety may interfere with the acquisition of status and mates, and potentially lead to self-reinforcing circles of low self-esteem.”

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“Ferguson and colleagues also reviewed that thin models in the media have comparatively small effects on body dissatisfaction, and mainly on women with preexisting weight concerns and/or high neuroticism. Instead, the largest and most consistent effects are those of mating competition in the peer network -that is, the number of attractive and available women in one's inmediate social environment (for example, friends and colleagues).”

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“The pubertal surge of sex hormones plays a major role in the onset of eating symptoms in females, as shown by the fact that the heritability of Eating Disorders increases sharply at mid-puberty in girls, but not in boys. In particular, binge eating is strongly modulated by the interaction of estrogens and progesterone acrosss the menstrual cycle, consistent with the role played by these hormones in the regulaion of hunger and feeding. Both the frequency of bingeing and its heritability peak after ovulation, in tandem with rising progesterone levels.”

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“A thinness ideal at the social and individual levels is not the only precondition for the bingeing-purging cycle: bingeing require easy access to large amounts of high-calorie food, and most purging methods are impractical without modern plumbing and sanitation.”

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“Food restriction does not necessarily lead to self-starvation; in fact, a common effect of sustained weight loss is a tendency to binge whenever food is available (typically with feelings of automaticity and loss of control). Common triggers for binges include tempting food and excessive hunger, but also interpersonal stressors and strong emotions. To compensate for impulsive overeating, some people start to adopt purging behaviors such as vomiting and laxative use. The combination of bingeing and purging may lead to the onset of a self-reinforcing cycle. Especially in the early stages of the cycle, bingeing and purging cause intense guilt, shame and anxiety. Those negative emotions may then trigger more binges or prompt renewed attempts to restrict food, which ultimately end up strengthening the cycle. Bingeing and purging can be rewarding on a number of levels. On the one hand, these symptoms relieve anxiety, boredom, emptiness, and other negative feelings; on the other hands, they prevent stressful interactions with other people (e.g. staying home from school or work to binge), attract attention from family and friends, and may provide a way to communicate one's ill-defined psychological distress in concrete terms. Over time, the behavioral sequence of bingeing and purging becomes more automatic and less emotionally intense, but also harder to interrupt.”

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“The self-starvation cycle has been documented across time and cultures, including non-Western ones. In modern Western societies, concerns with fat and thinness are the main reason for weight loss and probably explain the moderate rise of Anorexia Nervosa incidence across the second half of the 20th century. However, cases of self-starvation with spiritual and religious motivations have been common in Europe at least since the Middle Ages (and include several Catholic saints, most famously St. Catherine of Siena). In some Asian cultures, digestive discomfort is often cited as the initial reason for restricting food intake, but the resulting syndrome has essentially the same symptoms as anorexia in Western countries.”

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“While natural selection is expected -all else being equal- to weed out traits that have become detrimental to fitness, the process may often take a long time. This generates the potential for mismatch between and organism's adaptations and its present environment.”

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“The mechanisms that enable and govern our behavior today have been shaped by the ecology and behavior of our ancestors across countless generations; the mind/brain can then be studied as an evolved -computational organ-, or more precisely, a collection of specialized organs that perform various kinds of computations.”

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“To the extent that psychological mechanisms rely on information acquired through learning, they are vulnerable to maladaptive outcomes owing to the intrinsic limitations of learning processes. Indeed, the massive capacity for individual and social learning required to exploit the cognitive niche may contribute to explain our species' seemingly unique vulnerability to mental disorders.”

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