Detecting Submerged Bodies: Controlled Research Using Side‐Scan Sonar to Detect Submerged Proxy Cadavers

Forensic investigators routinely deploy side‐scan sonar for submerged body searches. This study adds to the limited body of literature by undertaking a controlled project to understand how variables affect detection of submerged bodies using side‐scan sonar. Research consisted of two phases using small and medium‐sized pig (Sus scrofa) carcasses as proxies for human bodies to investigate the effects of terrain, body size, frequency, swath width, and state of decomposition. Results demonstrated that a clear, flat, sandy pond floor terrain was optimal for detection of the target as irregular terrain and/or vegetation are major limitations that can obscure the target. A higher frequency towfish was preferred for small bodies, and a 20 m swath width allowed greater visibility and easier maneuverability of the boat in this environment. Also, the medium‐sized carcasses were discernable throughout the 81‐day study period, indicating that it is possible to detect bodies undergoing decomposition with side‐scan sonar.     

Interpreting Sexual Dating Encounters: Social Information Processing Differences in Men and Women

Research has shown that college women are at considerable risk for sexual assault by dating partners, and studies have shown early detection of threat risk cues is an important factor in rape avoidance. This study examined how men and women process sexual encounters in a date rape situation and how they differ in interpretation of cues and response decision-making using Crick and Dodge’s (1994) model of social information processing (SIP). Participants listened to an audio vignette depicting a female resisting sexual contact as the male continues to make sexual advances. The vignette was paused at a point in which there is ambiguity concerning the sexual intentions of the actors, and multiple choice/forced answer questions reflecting five stages in social information processing (causal and intent interpretation, goal clarification, response decision, response efficacy, and response evaluation) were administered. Analyses revealed males and females significantly differed in all SIP stages, and emotional reaction was a significant predictor of response decision. Implications of the findings were discussed.