The human brain is a very complex organ that has captured the minds of many for the wonders it constantly propagates in terms of rationality, morality, social functioning, executive functioning and other attributes. A simple definition taken from the Oxford Dictionary 2014 defines schizophrenia as a long-term mental disorder involving a breakdown in the relationship between thought, emotion and behavior, leading to erroneous perception, inappropriate actions and feelings, withdrawal from reality and personal relationships towards the imagination and delirium and feeling of mental fragmentation. Affecting both sexes approximately equally in 1% of the population, it occurs in late adolescence and early adulthood, with symptoms lasting throughout life. The symptoms are so complex that normal brain function is distorted into a psychotic phase and a contracted range of emotional expression, as noted in the Australian Mental Illness Research Fellowship. Deconstructing the underlying causes, treatment and/or definition of schizophrenia is beyond the scope. of this essay, but a brief understanding of the concept by which schizophrenia has been defined or classified as a syndrome will be described in this article as well as a review of one of the cognitive disorders seen in people with schizophrenia will be analyzed. Jim van Os & Shitij Kapur. (2009) emphasize that symptoms are fairly easy to distinguish among different categories of psychotic disorders based on duration, dysfunction, delusions, and mania, but research analysis reveals that some Schizophrenic crisis is classified into several underlying groups, Psychosis. which includes delusions and hallucinations, also called positive dimension of symptoms and...... middle of article ......ent test such as word generation tests and the Stoop Test, Liddle accomplishes this Impaired activity planning and initiation and impaired activity selection are the two main types of executive deficits that predict poor social and occupational performance. The Stoop test also indicates that negative symptoms show up as poor communication skills, absence of emotional stimuli, and reduced voluntary movements. Green MF. (1996), illustrates that the underlying predictors of poor social performance and poor quality of life were deficits in executive functions and deficits in long-term verbal memory. These are two areas that are significantly affected by schizophrenia. Also according to Green (1996), if a subject suffering from schizophrenia performs poorly on tasks such as verbal memory, vigilance and working memory, this indicates a deficiency in learning new skills..