The concept of abnormality has been a controversial and highly controversial topic in the field of psychology, particularly when attempting to come up with a precise definition of psychological anomaly. Mental health problems are a major public health problem, with one in four adults in Britain suffering from at least one diagnosable mental health problem in the course of a year (Singleton N, 2001). How we define the cause and nature of abnormal behavior has significant effects on issues such as: how we approach treatments, the roles of clients and clinicians, research funding and its interpretation. Perhaps most crucially, ideas that are not explicit. For example, if you believe the cause of an abnormality is strictly physiological, you may fail to identify and address the impact of factors such as society, gender and religion. This essay has been divided into four parts. The first part critically evaluates four definitions of abnormality, the second part analyzes how psychological perspectives treat the concept of abnormality. Next, the impact of culture is explored. Culture will be discussed separately because it permeates all definitions and perspectives. Finally, conclusions regarding the psychological abnormality will be presented. The first definition of anomaly that will be discussed is deviation from statistical norms. This definition is based on the view that abnormal behaviors, such as delusions, are relatively rare and, in statistical terms, occurrences of abnormalities would fall outside of a normal range. According to this definition, the further the behavior is from the majority, the more abnormal it is (Helzer, 2002). The main force behind the deviation from the definition of statistical standards lies in middle of paper......policies such as; personalization of community mental health services (Social Care Institute of Excellence, 2009), integrated care and based on the assumption that people live longer; the advances that might be possible in treatments and patient outcomes through the government's Dementia Challenge (Department of Health, 2014). Additionally, although explanations and treatments for mental illness have come a long way, attitudes have been slower to change. A Time to Change survey showed an overall improvement of 3.6% in public attitudes between 2008 and 2012 (Time to Change, 2012), (The Guardian, 2013) and (BBC, 2013). But now that promoting mental health awareness is firmly on the agenda and if the government invests appropriately in research, we could soon see innovative and positive advances in the way we explain and treat mental illness..