What causes criminal behavior? Human antisocial behavior is complex, and trying to understand it has always proven to be an arduous and intelligent task, especially in modern culturally diverse societies. Criminality, defined broadly as the behavior through which individuals obtain resources for others through crude means, presents itself as one of the most refractory internal social dilemmas. Understanding individual criminal acts such as murder, rape or the motivations behind them is complicated, rather their behavioral definitions and causes offer a clearer platform for argumentative reasoning. Criminal behavior, in any form, involves the use of barbaric methodologies to obtain symbolic or material resources. Criminal behavior results from methodical processes involving intricate interactions between isolated, social, and environmental factors in people's lives. Criminality constitutes strategic mannerisms characterized by apathy towards the misery inflicted on others, egocentrism and depressed self-control. Habitual criminal behavior aims to satisfy the offender's desires for material prestige, power, or pleasant feelings regardless of the harm inflicted on the victim or society. Such behaviors extend distrust, fuel prejudice and largely corrupt social cohesion. Biological, psychological, and environmental attributes are thought to heavily influence antisocial and criminal behavior. Numerous studies have demonstrated that active emulation, genetic predispositions, and psychosocial labeling are all complementary to the development and expressions of criminal behavior. Historically there have been myriad theories that attempt to explain criminal behavior through different perspectives, all constituting intricate paradigms that play a role in the expression...... half of article ......hurts low levels of monoamine oxidase enzyme, thus predisposing the individual to criminal behavior (Lee). Although not conclusive, there are numerous other sociobiological factors that present individual risks to crime. These include gang-related peer influence, low IQ levels, and hormones; especially cortisol and testosterone. Different schools of thought propose different theoretical models of crime. It is good that criminal behavior is deeply rooted in societies and requires attention. Theories about biological, social, ecological, and psychological patterns are critical to helping researchers gain a deeper understanding of criminal behaviors and ways to ward them off before they become a threat to society. All of these theories propose a multitude of factors on the outlook for crime. All of these theories have valuable relevance to ongoing research on criminal behavior.