The use of death penalty or capital punishment is one of the most controversial issues in Social Science studies. Scholars in social sciences are divided on whether or not the use of death penalty as a mean of punishing offenders is justifiable. One group of the scholars contend that death penalty is the most effective form of punishment for the criminals who have committed heinous crimes like murder and robbery with violence (Macdonald, 88). The other group of scholars, on the other hand, argue that death penalty is not an effective method of punishing the offenders and that the punishment does not lead to the intended objectives. A review of these arguments in favour of and against death penalty shows that death penalty is, indeed, an efficacious mean of punishing criminals guilty of serious and heinous crimes. This paper, therefore, evaluates the debates in favour of and against capital punishment and presents a coherent and logical debate in favour of death punishment. In the presentation of the arguments in favour of death penalty, Stephen Toulmin’s model of argumentation is applied (Stephen Toulmin, online). The application of the Toulmin’s model of argumentation helps in presenting the arguments in a coherent and logical manner. There are three main arguments in support of death penalty as an effective mean of punishing the offenders who are guilty of crimes of high magnitude. The first argument is based on the claim that death penalty deters crime. Death penalty as a deterrent mean to further commission of crime is one of the main reasons why death penalty is practiced in many jurisdictions. As a mean of punishing the criminals for their offences, death penalty deters further commission of crime in two ways. In the first way, by killing the offenders of crimes of high magnitude, for instance a murderer, the murderer will have no further opportunity to commit the crime again (Maulsby, 28). This in effect means that the crimes of murder will drastically reduce in that particular area. Although there are some studies that tend to refute this fact, there are, however numerous studies that corroborate this fact. For instance in the study by Erhlich, carried out in USA in an attempt to find out whether, really, capital punishments lead to reduction in crime rate, it was found that, there is, indeed, a strong correlation between death penalty and the rate of crimes, especially crimes of high magnitude like murder ( Arguments for and against Death Penalty, online). The study showed a significant reduction in crime, in places where death penalty is practiced as compared to other places where different means of punishing such criminals is practiced. But, apart from the studies that tend to support the view that death penalty can lead to reduction in crime, it is also, a matter of common sense that, when the people who are committing crimes are abolished or killed, then the rate of crimes will significantly reduce because they will not have another opportunity to commit the crimes. The second reason why death penalty leads to reduction in crime is due to the fact that by killing the offenders of serious crimes, other people with the intent to kill will be afraid of doing so for fear of the consequences that would befall them(Goel, 2008). People, naturally, fear severe punishments, especially death, and so, when the law prescribes death penalty for serious crimes, then many people, utterly out of fear for the death, will refrain from committing such crimes. Although there are some studies contradicting this fact, arguing that death penalty does not deter criminals from committing crimes( Arguments for and Against Death Penalty, online) there are contrary studies supporting the view that death penalty instils fear among the criminals and, therefore, prevents them from committing crimes. But it is a fact that some people commit crimes due to psychological problems and for these kinds of people, death penalty cannot prevent them from committing crimes because, they commit crimes out of uncontrollable strong psychological impulse. But it is not true that all people who commit crimes do so out of psychological disorder. This therefore shows that use of death penalty as a mean of punishing the criminals can lead to reduction of crimes