Aggravating and Mitigating Circumstances, Evaluation of in Capital Cases

If a defendant is found guilty of a capital crime, the triers of fact are called on to weigh the significance of the aggravating and mitigating factors of the case and to [Page 7]use such judgments to decide whether the defendant will receive the death penalty or a life sentence. During the sentencing phase, the prosecution presents the relevant aggravating factors of the case, while the defense is charged with the duty of providing mitigation factors. Although no standard model exists to offer procedures for the investigation of mitigating factors, scholars, clinicians, and researchers have offered recommendations concerning the common types of information needed and the appropriate ways to present it to the jury. In all cases, a mitigation evaluation is conducted with the goal of humanizing the defendant to the jury, in the hope that they will not recommend the death penalty.

During the penalty phase of a capital offense trial, the triers of fact (i.e., the judge or jury depending on the state) are presented with two types of information: (1) aggravating factors (i.e., facts from the case that make it especially serious or heinous) and (2) mitigating factors (i.e., facts from the case that may reduce the defendant's moral culpability). As set forth in Ring v. Arizona (2002), to come forward with a recommendation for death, the jury must first be convinced beyond a reasonable doubt that the state has met its burden of proof with respect to the presence of one or more aggravating factors. Once this has been done, the defense is required to present mitigating factors with the goal of convincing the trier of fact that this individual does not deserve the penalty of death. The driving force behind this practice is the U.S. Supreme Court's assertion in Furman v. Georgia (1972) that sentences in capital cases should be individualized and should not be disproportionate or inappropriate given the mitigating factors in the case.

Aggravating factors in a capital case are often readily apparent from the circumstances of the crime. Like other states, the state of Texas has statutory aggravating factors that are precisely defined. Three examples of the criteria set forth by the Texas Penal Code are (a) if the person murders more than one person during the same criminal transaction; (b) if the person murders an individual under 6 years of age; and (c) if the person intentionally commits a murder in the course of committing (or attempting to commit) kidnapping, burglary, robbery, aggravated sexual assault, arson, or obstruction or retaliation.

In contrast to aggravating factors, which are established by statute, mitigating factors can be anything the defense chooses to present that it believes may sway the trier of fact to determine that life without parole is the proper and just sentence in the particular case. The following list provides just a few examples of the most common mitigating factors that are brought forward in a capital trial: history of neglect and/or abuse during the formative years, the presence of a mental illness, youthfulness, and a limited history of involvement with the legal system. It was in Lockett v. Ohio (1978) that the U.S. Supreme Court decided that limiting the type and amount of mitigating factors that can be presented to the trier of fact is unconstitutional.

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