Research on classification of individuals committing serial rapes based on their decision-making behaviors before a crime

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  • 犯行前の意思決定行動に基づく強姦事件の犯人の分類
  • ハンコウ マエ ノ イシ ケッテイ コウドウ ニ モトズク ゴウカン ジケン ノ ハンニン ノ ブンルイ

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Abstract

<p>This study aimed to (1) classify individuals committing serial rapes based on their decision-making behaviors before the criminal acts using latent class analysis, and (2) test the homology assumption that individuals displaying a similar offense style would have similar offender-characteristics. Four groups were identified: “Intruding into private spaces and raping sleeping victims,” “Outdoor assault,” “Non-violent approach,” and “Intruding into private spaces and raping non-sleeping victims.” Significant associations were found between the groups and characteristics of individuals committing these offenses. The “Intruding into private spaces and raping sleeping victims” group exhibited characteristics similar to burglars, including targeting a place prior to the crimes and intending to steal. The “Outdoor assault” group was younger and less likely to commit offenses in areas close to their residence than the others. The “Non-violent approach” group tended to be opportunistic in selecting their victims and traveled further than others did. The “Intruding into private spaces and raping non-sleeping victims” group had a lower intention to steal than the “Intruding into private spaces and raping sleeping victims” group. These results supported the homology assumption, but the associations between offenders’ decision-making behaviors before committing rapes and the offender characteristics were weak to moderate in strength.</p>

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