The research has been performed as to understand The impulsivity-compulsivity diathesis has been fruitful for examining a range of psychiatric disorders that are commonplace globally, as well as day-to-day behaviours. Impulsivity refers to behaviours that are inappropriate, risky, unduly hasty, and that lead to untoward outcomes. Impulsive and compulsive symptoms are common, tend to co-occur, and collectively account for a substantive global disease burden. Latent phenotyping offers a promising approach to elucidate common neural mechanisms conferring vulnerability to such symptoms in the general population. Partial Least Squares was used to identify brain regions in which intra-cortical myelination was significantly associated with a disinhibition phenotype, derived from bi-factor modelling of 33 impulsive and compulsive problem behaviours. Disinhibition scores were significantly and positively associated with higher MT in the bilateral frontal and parietal lobes. 1279 genes associated with disinhibition-related brain regions were identified, which were significantly enriched for functional biological interactions reflecting receptor signalling pathways. This study indicates common microstructural brain abnormalities contributing to a multitude of related, prevalent, problem behaviours characterised by disinhibition. Such a latent phenotyping approach provides insights into common neurobiological pathways, which may help to improve disease models and treatment approaches. Hence we conclude Now that this latent phenotyping model has been validated in a general population sample, it can be extended into patient settings.