Abstract
Depression is one of the most common mental disorder that could negatively affects individuals’ feeling, cognition and behaviour. From the cognitive modal of depression, people who have a negatively biased thinking mode tend to produce negative feeling about self, world, and their future (Beck, Aaron T, 2008). Compared to the normality, the ‘abnormal’ people tend to have a different way of interpreting things. This results from the abnormal brain functions which in turn causes cognitive deficits in depressed people. This literature review will focus on how those cognition deficits developed in children and how it causes a ‘depressed brain’. It points out people with depression usually have impairment in executive function, memory, and attention and these cognition impairments are related to the dysfunction of locus control and prefrontal cortex.