PubMed · 6538037
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M E Drake. 1984. Cursive and cursing epilepsy.. https://doi.org/10.1212/wnl.34.2.267
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Genetic variation in behavioral traits allows organisms to respond and adapt to environmental challenges. Genetic variation in behavior is often affected by many genes and thus has a complex genetic basis. Inversions, the reorientation of genes along the chromosome, tightly link genetic variants together because they suppress recombination. Therefore, inversions are believed to have a major impact on phenotypic variation because they combine the effects of multiple genes, which can pleiotropically alter multiple aspects of behavior. This study investigates how the inversion In(2L)t, found in Drosophila melanogaster populations around the world, impacts different aspects of behavior in an environment-sensitive manner. We test the activity, foraging, and startle-induced behavior of flies with different In(2L)t genotypes across sex and temperatures. We observe that Drosophila homozygous for In(2L)t sleep less frequently, spend more time away from a food source, and have a longer duration of startle response. Additionally, the impacts of In(2L)t on aspects of behavior can be sex-specific and are largely consistent across temperatures. Taken together, our research demonstrates that inversions can regulate aspects of behavior, and suggests hypotheses explaining the distribution of In(2L)t across space and time.
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OBJECTIVE: Thought suppression frequently results in subsequent hyperaccessibility of the suppressed thoughts. This study investigated whether this effect transfers to behavior. Does suppressing thoughts result in a subsequent increase in the performance of behaviors related to those thoughts? METHODS: Twenty chocolate cravers and 22 noncravers were instructed to suppress chocolate-related thoughts in an articulated thoughts task or they were given no specific instructions. Participants then completed a computer-based task which yielded chocolate rewards. RESULTS: Both cravers and noncravers could suppress chocolate-related thoughts when instructed to do so. Both groups of participants showed greater performance, and hence earned more chocolate, in the suppression than control condition (p < .05). DISCUSSION: Behavioral control may follow many of the same ironic pathways traced by mental control.