Negative childhood experiences, including physical abuse (e.g. spanking) and neglect (e.g. not having enough food to eat) and emotional abuse (e.g. name calling) and neglect (e.g. parents favoring a sibling), are common in our society. Negative childhood experiences are highly correlated with later adult social, physical, and mental health problems. People who report more negative childhood experiences are more likely to develop negative mental health symptoms such as anxiety, depression, and are more likely to abuse substances. Moreover, studies have shown that healthy people who report more negative childhood experiences also engage in more risk taking behavior and have higher levels of stress. From a neurological perspective, brain structural alterations have also been shown in healthy people reporting more negative childhood experiences, including reduced white matter integrity (measured by fractional anisotropy) in left superior temporal gyrus, hippocampus, fornix, corpus callosum and fornix. However, the insula has not been well studied -- despite being a highly connected brain hub, involved in important functions such as pain processing, emotion processing, body awareness, and language processing. Hence, this study will be focusing on the relationship between insula white matter alterations and self-reports of negative childhood experience. I hypothesised that decreased fractional anisotropy values in the posterior insula will be seen in healthy adults who were physically abused, compared with adults who report less abuse, because the posterior insula has is crucial in body awareness and pain perception. Decreased fractional anisotropy values in the anterior insula will be seen in healthy adults who were emotionally abused and neglected, because the anterior insula is associated with emotion processing and awareness.