PubMed · 14923679
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L KANNER. 1952. Emotional interference with intellectual functioning.. https://pubmed.ncbi.nlm.nih.gov/14923679/
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The basis of suicidal behavior (SB) is complex and multifactorial. Numerous risk factors have been identified. Epidemiological genetics studies (family studies, twin studies, adoption studies) suggest that there is a genetic basis to SB and that this genetic basis is specific and independent from the genetic factors implicated in predisposition to psychiatric disorders associated with SB (bipolar disorder, schizophrenia, alcoholism). Recently, new molecular genetics tools have been designed to identify the genetic factors that predispose certain individuals to disorders of complex etiology. Biological psychiatry studies have suggested that the physiopathology of SB involves dysfunctioning of the serotonin system. The first genetic association studies tested candidate genes encoding proteins involved in serotonin metabolism. The results of these studies suggest that the gene coding for the limiting enzyme in the synthesis of serotonin, tryptophan hydroxylase (TPH), and the gene encoding the serotonin transporter are involved in predisposition to SB. Furthermore, it is likely that these genes interact with each other and with environmental factors (early) and that they have different phenotypic consequences. One of the main aims of studies currently underway is to identify the precise phenotypes associated with genes that predispose to SB or intermediate phenotypes (impulsivity, inability to control anger, etc.).
In the course of extensive philosophical debates on aesthetics in nineteenth-century Germany, Robert Vischer introduced the concept of Einfühlung in relation to art. Theodor Lipps subsequently extended it from art to visual illusions and interpersonal understanding. While Lipps had regarded Einfühlung as basically similar to the old notion of sympathy, Edward Titchener in America believed it had a different meaning. Hence, he coined the term empathy as its translation. This term came to be increasingly widely adopted, first in psychology and then more generally. But the lack of agreement about the supposed difference between these concepts suggests that Lipps had probably been right.