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Environmental epigenetics is a branch of epigenetics that studies the influence of external environmental factors on the gene expression of a developing embryo. [1] The way that genes are expressed may be passed down from parent to offspring through epigenetic modifications, although environmental influences do not alter the genome itself.
Gene–environment interaction occurs when genetic factors and environmental factors interact to produce an outcome that cannot be explained by either factor alone. [6] For example, a study found that individuals carrying the genetic variant 5-HTT (the short copy) that encodes the serotonin transporter were at a higher risk of developing depression when exposed to adverse childhood experiences ...
Behavioral evolution is therefore influenced by both the physical environment and interactions between other individuals. An example of how changes in geography can make a strategy susceptible to alternative strategies is the parasitization of the African honey bee, A. m. scutellata .
These environmental factors aside from residual stress generate maladaptive cognitive patterns that provide a ‘breaking point’ to individuals with genetic vulnerability to PTSD to exhibit the disorder. Biological pathways include a diversity of factors including hormonal and neurotransmitter abnormalities, and alterations in neural structure.
While the name "behavioural genetics" connotes a focus on genetic influences, the field broadly investigates the extent to which genetic and environmental factors influence individual differences, and the development of research designs that can remove the confounding of genes and environment.
Experiences, and therefore development, are more influenced by evocation than by the passive environment. However, the influence of evocation declines over time. [citation needed] Active Individuals selectively attend to aspects of their environment that correlate to their specific genotypes and autonomously choose environments to interact with.
Most of the research on environmental enrichment has been carried out on non human animals. [2] In an experiment, four different habitats were set up to test how environmental enrichment or relative impoverishment affected rats' performance on various measures of intelligent behavior. First, rats were isolated, each to its own cage.
A context effect is an aspect of cognitive psychology that describes the influence of environmental factors on one's perception of a stimulus. [1] The impact of context effects is considered to be part of top-down design. The concept is supported by the theoretical approach to perception known as constructive perception. Context effects can ...