Police Lie Detection Accuracy: The Effect of Lie Scenario

Although most people are not better than chance in detecting deception, some groups of police professionals have demonstrated significant lie detection accuracy. One reason for this difference may be that the types of lies police are asked to judge in scientific experiments often do not represent the types of lies they see in their profession. Across 23 studies, involving 31 different police groups in eight countries, police officers tested with lie detection scenarios using high stakes lies (i.e., the lie was personally involving and/or resulted in substantial rewards or punishments for the liar) were significantly more accurate than law enforcement officials tested with low stakes lies. Face validity and construct validity of various lie scenarios are differentiated.     

No One Type of Intimate Partner Abuse: Exploring Physical and Non-Physical Abuse Among Intimate Partners

Although research into intimate partner abuse has expanded throughout the past several decades and increased our understanding of this multi-faceted phenomenon, the vast majority of empirical work is still focused almost exclusively on physical violence—against women in particular. Although a crucial issue in our society, physical violence against women is only one facet in an array of possible abusive behaviors toward an intimate partner. Researchers have long acknowledged the existence of multiple forms of non-physical abuse. These types of abuse have received little research attention, however, and are commonly lumped together simply as “non-physical” or “emotional” abuse. There is no reason to believe, however, that all forms of non-physical abuse are the same, whether in intensity, frequency, or co-existence with physical violence. The current study attempts to disentangle the multiple types of nonviolent abuse to examine prevalence, differences by sex, and its relationships to physical abuse. Using Tjaden and Thoennes’ (1998) survey data, this study examines the prevalence of different types of non-physical abuse, both in the general population and among those experiencing physical violence Findings indicate that non-physical partner abuse is more common than physical and that non-physical abuse does not show striking sex differences, as is commonly believed. There is strong evidence that some types of non-physical abuse serve as clear risk factors for physical abuse and may increase risk of more frequent violence among those already being abused. These relationships do not, however, differ by sex. Implications for future research are discussed.

Whitewashing: How Obama Used Implicit Racial Cues as a Defense Against Political Rumors

Political Behavior - Although Barack Obama won the presidency in 2008, some Whites nevertheless penalized him because of his race. In part, these penalties involved persistent rumors about his...     

The Effect of Body Mass on Outdoor Adult Human Decomposition

Forensic taphonomy explores factors impacting human decomposition. This study investigated the effect of body mass on the rate and pattern of adult human decomposition. Nine males and three females aged 49–95 years ranging in mass from 73 to 159 kg who were donated to the Complex for Forensic Anthropology Research between December 2012 and September 2015 were included in this study. Kelvin accumulated degree days (KADD) were used to assess the thermal energy required for subjects to reach several total body score (TBS) thresholds: early decomposition (TBS ≥6.0), TBS ≥12.5, advanced decomposition (TBS ≥19.0), TBS ≥23.0, and skeletonization (TBS ≥27.0). Results indicate no significant correlation between body mass and KADD at any TBS threshold. Body mass accounted for up to 24.0% of variation in decomposition rate depending on stage, and minor differences in decomposition pattern were observed. Body mass likely has a minimal impact on postmortem interval estimation.     

A validation study for duct tape end matches

Fracture matches are considered to be the strongest association achievable in forensic examinations of glass, metal, wood, plastic, paint, tape, and other trace evidence. Despite being fairly routine examinations, few publications exist to support their admissibility in court. This study was designed, using duct tape as the fractured medium, to determine the validity and error rate associated with conducting end match (fracture match) examinations on this material. Five test designs, which varied either the source roll of tape or manner of separation (torn or cut) from the roll, were administered to four analysts with instructions to examine the assigned test sets for end matches. If an end match was not identified by the initial analyst, the entire test set was independently evaluated by the remaining three analysts. Results indicated that while tape grade did not hinder end match identification, the manner of separation could affect results.     

Death at high altitude in the hypobaric chamber

A small number of accidental and suicidal deaths have occurred in the hypobaric, or high altitude, chamber. A case of an unusual suicide in a hypobaric chamber is presented. The changes that resulted from decompression and hypoxia are discussed.     

The self-concept of homeless adolescents

Thirty adolescents who had lived away from home for at least six months were compared on self-concept with 120 adolescents living at home. The latter group was divided into equal numbers of adolescents who were employed, unemployed, school students, and college students. The Offer Self-image Questionnaire for Adolescents was used to measure self-concept. Other measures used were the Beck Depression Inventory, the Hopelessness Scale of Beck et al.,and the Rotter Internal External Locus of Control Scale. These were used to examine the relationship between deficits in self-concept and psychopathology. Environmental factors such as family relationships, employment, school achievement, and friendships were also examined. It was found that homeless adolescents demonstrated significant deficits in five areas of self-concept and a specific pattern of deficits was related to hopelessness. Results were discussed with reference to the theory that acting-out behavior mitigates the impact of affective disturbance on self concept.Received her master's of clinical psychology from Macquarie University, Australia. Major interest is adolescent psychopathology and clinical work with homeless adolescents.