Psychological abuse, often called emotional abuse, is a form of abuse, characterized by a person subjecting or exposing another person to behavior that may result in psychological trauma, including anxiety, chronic depression, or post-traumatic stress disorder. It is often associated with situations of power imbalance in abusive relationships, and may include bullying, gaslighting, and abuse in the workplace. It also may be perpetrated by persons conducting torture, other violence, acute or prolonged human rights abuse, particularly without legal redress such as detention without trial, false accusations, false convictions and extreme defamation such as where perpetrated by state and media. As of 1996, there was no consensus regarding the definition of emotional abuse. In fact, clinicians and researchers have offered sometimes divergent definitions of emotional abuse. 'Emotional abuse is any kind of abuse that is emotional rather than physical in nature. It can include anything from verbal abuse and constant criticism to more subtle tactics such as intimidation, manipulation, and refusal to ever be pleased. Emotional abuse can take many forms. Three general patterns of abusive behavior include aggressing, denying, and minimizing'; 'Withholding is another form of denying. Withholding includes refusing to listen, refusing to communicate, and emotionally withdrawing as punishment.' Even though there is no established definition for emotional abuse, emotional abuse can possess a definition beyond verbal and psychological abuse. Blaming, shaming, and name calling are a few verbally abusive behaviors which can affect a victim emotionally. The victim's self-worth and emotional well being are altered and even diminished by the verbal abuse, resulting in an emotionally-abused victim. The victim may experience severe psychological effects. This would involve the tactics of brainwashing, which can fall under psychological abuse as well, but emotional abuse consists of the manipulation of the victim's emotions. The victim may feel their emotions are being affected by the abuser to such an extent that the victim may no longer recognize their own feelings regarding the issues the abuser is trying to control. The result is the victim's self-concept and independence are systematically taken away. The U.S. Department of Justice defines emotionally abusive traits as including causing fear by: intimidation, threatening physical harm to self, partner, children, or partner's family or friends, destruction of pets and property, forcing isolation from family, friends, or school or work. More subtle emotionally abusive behaviors include insults, putdowns, arbitrary and unpredictable behavior, and gaslighting (e.g. the denial that previous abusive incidents occurred). Modern technology has led to new forms of abuse, by text messaging and online cyber-bullying. In 1996, Health Canada argued that emotional abuse is 'based on power and control', and defines emotional abuse as including rejecting, degrading, terrorizing, isolating, corrupting/exploiting and 'denying emotional responsiveness' as characteristic of emotional abuse. Several studies have argued that an isolated incident of verbal aggression, dominant conduct or jealous behaviors does not constitute the term 'psychological abuse.' Rather, it is defined by a pattern of such behaviors, unlike physical and sexual maltreatment where only one incident is necessary to label it as abuse. Tomison and Tucci write, 'emotional abuse is characterised by a climate or pattern of behavior(s) occurring over time Thus, 'sustained' and 'repetitive' are the crucial components of any definition of emotional abuse.' Andrew Vachss, an author, attorney and former sex crimes investigator, defines emotional abuse as 'the systematic diminishment of another. It may be intentional or subconscious (or both), but it is always a course of conduct, not a single event.' Domestic abuse—defined as chronic mistreatment in marriage, families, dating and other intimate relationships—can include emotionally abusive behavior. Although psychological abuse does not always lead to physical abuse, physical abuse in domestic relationships is nearly always preceded and accompanied by psychological abuse. Murphy and O'Leary reported that psychological aggression is the most reliable predictor of later physical aggression.