Presumptive sentence refers to a sentence whose length is specified by law but which may be modified by a judge under limited circumstances.

In the psychology context, a presumptive sentence refers to a recommended or suggested sentence length or type that a judge or court may consider when sentencing a defendant convicted of a crime. The presumptive sentence serves as a starting point, and the judge may impose a more lenient or more severe sentence based on the specific circumstances of the case.

Presumptive sentences are often used in sentencing guidelines or laws, which provide recommended or mandatory minimum sentences for specific crimes. For example, a state may have a mandatory minimum sentence of 10 years for a conviction of a violent crime. However, the judge may consider mitigating or aggravating factors such as the defendant's criminal history, the severity of the crime, or any extenuating circumstances when determining the final sentence.

Overall, the use of presumptive sentences aims to promote consistency and fairness in sentencing while allowing for individualized consideration of each case. However, some critics argue that presumptive sentences can limit a judge's discretion and result in overly harsh or lenient sentences in certain cases.