The imprinted brain hypothesis is an unsubstantiated hypothesis in evolutionary psychology regarding the causes of autism spectrum and schizophrenia spectrum disorders, first presented by Bernard Crespi and Christopher Badcock in 2008. It claims that certain autistic and schizotypal traits are opposites, and that this implies the etiology of the two conditions must be at odds.
The imprinted brain hypothesis is based around genomic imprinting, an epigenetic process through which genes are expressed differently by way of one parent's contribution having more effect than the other. Specifically, proponents of the imprinted brain hypothesis propose that autism spectrum disorders are caused by paternal overimprinting, while schizophrenia spectrum disorders are caused by maternal overimprinting; they point to a number of supposed correlations and anticorrelations seen between the disorders and other traits to support the hypothesis.
While the hypothesis has found some attention in popular science, it lacks scientific backing.[1][2] It has also been attacked as unfalsifiable, exaggerated, and overly broad.[3] Specific issues for the hypothesis include that the predictions it makes about genetic disorders are falsified, that the effects of the two disorders on empathy and mentalizing are contrary to Crespi and Badcock's model, and that many neuroimaging findings fail to support the hypothesis.
^Russell-Smith, Suzanna (2012). The Relationship Between the Autism and Schizophrenia Spectra: An Investigation at the Trait and Cognitive Levels (PhD). Perth: University of Western Australia.
^Ragsdale G, Foley RA (July 2012). "Testing the imprinted brain: parent-of-origin effects on empathy and systemizing". Evolution and Human Behavior. 33 (4): 402–410. doi:10.1016/j.evolhumbehav.2011.12.002.
^Dickins BJA, Dickins DW, Dickins TE (2008). "Is this conjectural phenotypic dichotomy a plausible outcome of genomic imprinting?" (PDF). Behavioral and Brain Sciences. 31 (3): 267–268. doi:10.1017/S0140525X08004287.
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The imprintedbrainhypothesis is an unsubstantiated hypothesis in evolutionary psychology regarding the causes of autism spectrum and schizophrenia spectrum...
involve imprinting. The "imprintedbrainhypothesis" argues that unbalanced imprinting may be a cause of autism and psychosis. In insects, imprinting affects...
intimately intertwined relationship. This hypothesis builds upon Crespi and Badcock's imprintedbrainhypothesis of autism and psychosis by suggesting that...
Crespi to develop the imprintedbrainhypothesis, according to which autism results from "a paternal bias in the expression of imprinted genes", whereas psychosis...
CH, Palmer AA (March 2018). "The genetics of human personality". Genes, Brain and Behavior. 17 (3): e12439. doi:10.1111/gbb.12439. PMC 7012279. PMID 29152902...
clinical depression is thought to be a pathology—a major dysfunction of the brain. In most cases, rates of organ dysfunction increase with age, with low rates...
why males are diagnosed more often, such as the imprintedbrainhypothesis and the extreme male brain theory. Several prenatal and perinatal complications...
and ecological approaches. He is one of the initiators of the imprintedbrainhypothesis. In 2010, he was elected as a fellow of the Royal Society of Canada...
premises. The brain is an information processing device, and it produces behavior in response to external and internal inputs. The brain's adaptive mechanisms...
along with ASD but this has not been assessed systematically. See Imprintedbrainhypothesis, Causes of schizophrenia, DUF1220 Diagnostic and Statistical Manual...
Memetics – Study of self-replicating units of culture Multiple discovery – Hypothesis about scientific discoveries and inventions Universal Darwinism – Application...
Research (INSAR), partnering with publishers Wiley-Blackwell. The imprintedbrainhypothesis of autism was first presented by Bernard Crespi and Christopher...
evolutionary educational psychology state there are: (a) aspects of mind and brain that have evolved to draw the individuals attention to and facilitate the...
neuroscientific hypothesis that was based on research novel at the time, mainly on Michael Gazzaniga's split-brain experiments and left-brain interpreter...
Evolutionary approaches to schizophrenia Glutamate hypothesis of schizophrenia Imprintedbrainhypothesis Mechanisms of schizophrenia Sex differences in schizophrenia...
retain imprinted preferences and approach the second species they were raised by rather than choose their own, if given a choice. Imprinting serves as...
plasticity or brain plasticity, is the ability of neural networks in the brain to change through growth and reorganization. It is when the brain is rewired...
was the increase of brain size. However, recent research has called into question the hypothesis of a threefold increase in brain size when comparing...
the effect of certain psychoactive substances and how these affect the brain, tantric breathing techniques, and other methods and holistic approaches...
Grandin's Brain". Discover Magazine. Archived from the original on April 3, 2013. Retrieved June 20, 2018. Badcock, Christopher (2009). The ImprintedBrain: How...
the hypothesis of a bicameral mind, linking it to the origin of civilization. Book II, titled "The Witness of History", applied this hypothesis to neolithic...
can refer to: Body memory, the hypothesis that (traumatic) memories can be stored in individual cells outside the brain Neuronal memory allocation, the...
social and emotional behaviour, knowledge, or sapience are afterwards imprinted by one's environment onto the mind as one would onto a wax tablet. This...
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