Children who engaged in interpersonal problematic sexual behaviors.

BACKGROUND: Over one-third of inappropriate sexual contact experienced by children is initiated by other children. Many studies examined child initiators (CIs) of interpersonal problematic sexual behaviors (IPSBs). This study uniquely links CI information with types of sexual contact as described by children they engaged in IPSBs. OBJECTIVE: Describe CIs' characteristics and types of sexual acts they initiated. PARTICIPANTS/SETTING: Medical charts of CIs and children they engaged in IPSBs. Examinations occurred between 2002 and 2013. METHODS: Retrospective chart review. RESULTS: Most CIs were male (83%) and related to the child they engaged in IPSBs (75%); mean age was 10 years (range 4-17); 58% reported viewing sexually explicit media; 47% experienced sexual abuse. Most CIs (68%) engaged in multiple types of IPSBs. Children who experienced IPSBs initiated by males reported engagement in greater numbers of invasive acts (t(216) = 2.03, p = .043). Older CIs were more likely than younger CIs to report viewing sexually explicit media (χ2(1) = 7.81, p = .007) and those who did were more likely to initiate more invasive acts (t(169) = 2.52, p = .013) compared to CIs who did not. CONCLUSIONS: In this study, most CIs were young and experienced multiple adverse events; the most common types of IPSBs were invasive; and over half the CIs had been exposed to sexually explicit media, which was associated with initiating invasive sexual acts. These findings suggest aiming prevention efforts at young children to help them manage exposure to sexually explicit media and redress victimization experiences.

Cognitions and distress in caregivers after their child's sexual abuse disclosure.

The impact of child sexual abuse on children is well documented, but few studies have examined the impact of a child's sexual abuse disclosure on maternal caregivers. The studies that have been conducted suggest that parental response postdisclosure is variable. The present study examined the association between maternal attributions and abuse-specific cognitions with depression and trauma symptoms postdisclosure. Participants included 68 nonoffending maternal caregivers of children between the ages of 3 and 17 years who experienced child sexual abuse. Findings indicated that caregivers' abuse-specific cognitions were the best predictor of self-reported symptoms of depression after controlling for general negative attributions. These findings suggest that in order to reduce caregivers' distress and to enhance their support of their children, it is important to assess and treat caregivers' abuse-specific cognitions.

Caregivers' efforts to educate their children about child sexual abuse. A replication study.

The current investigation examined parental efforts to educate their children about sexual abuse. Approximately 750 surveys were distributed to parents of kindergarten through third grade youngsters (mean age 8.5) in three New Jersey elementary schools. Participants were 289 guardians (39% response rate) who voluntarily completed a survey assessing demographic characteristics, caregivers' direct or indirect experience with child sexual abuse, and their efforts to educate their children about the issue. As found previously, parents continue to disproportionately focus on strangers as potential offenders and provide limited information particularly in terms of the nature of sexual abuse and the secrecy associated with it. Parents with no direct or indirect experience with child sexual abuse were least likely to talk with their children about the issue in general and when they did so provided less information. These findings were surprisingly similar to earlier investigations despite methodological and sampling differences across investigations. Implications and limitations of the current survey findings discussed.

Girls who disclose sexual abuse: urogenital symptoms and signs after genital contact.

BACKGROUND: Little information is available about idiosyncratic historical details provided by sexually abused girls, yet this information can help medical professionals diagnose sexual abuse. OBJECTIVES: Our goals were to describe types and frequencies of urogenital symptoms/signs reported by girls who disclosed direct genital contact and to explore factors associated with this reporting. METHODS: We reviewed 161 medical charts of 3- to 18-year-old girls who disclosed sexual abuse by direct genital contact for urogenital symptoms/signs, type of genital contact (oral, object, digital, or genital), time interval between last perpetrator contact and physical examination, age and sexual maturity at the time of last perpetrator contact, genital findings, and other medical diagnoses. Regression analyses were performed to determine factors that were most predictive of symptom/sign reporting. RESULTS: Many of the girls reported multiple types of genital contact; 33% reported oral/object-genital contact, 72% reported digital-genital contact, and 55% reported genital-genital contact. Sixty percent of the girls reported experiencing >or=1 symptom/sign; 53% of the total sample had genital pain, 37% had dysuria, and 11% had genital bleeding. Symptoms/signs were highly associated with genital-genital contact: 48% of the girls reporting genital-genital contact had dysuria compared with 25% of girls not reporting genital-genital contact, 72% had genital pain/soreness compared with 32% not reporting genital-genital contact, and 16% had bleeding compared with 4% of those not reporting genital-genital contact. Using regression analysis, the strongest factor predictive of symptom reporting by the girls was genital-genital contact. CONCLUSIONS: Sexually abused girls who experienced direct genital contact frequently reported symptoms related to the abusive episode. These symptoms were reported most frequently with genital-to-genital contact. This information sheds some light on the mechanism of injury leading to symptom reporting and can be used to further study symptoms/signs reported by sexually abused girls compared with the general population.

PslD is a secreted protein required for biofilm formation by Pseudomonas aeruginosa.

The function of pslD, which is part of the psl operon from Pseudomonas aeruginosa, was investigated in this study. The psl operon is involved in exopolysaccharide biosynthesis and biofilm formation. An isogenic marker-free pslD deletion mutant of P. aeruginosa PAO1 which was deficient in the formation of differentiated biofilms was generated. Expression of only the pslD gene coding region restored the wild-type phenotype. A C-terminal, hexahistidine tag fusion enabled the identification of PslD. LacZ and PhoA translational fusions with PslD indicated that PslD is a secreted protein required for biofilm formation, presumably via its role in exopolysaccharide export.

Specialization of the specialized: electrophysiological investigations in professional musicians.

Several event-related brain potential (ERP) studies examining the processing of auditory stimuli by professional musicians compared with non-musicians are reviewed. In the first study, musicians (string players) and non-musicians attended to one of two streams of auditory stimuli characterized by a specific pitch. Musicians showed a prolonged ERP attention effect, the late portion of which was more frontally distributed than was that of the non-musicians. In the second study, we investigated auditory spatial processing in conductors, pianists, and nonmusicians. Only the conductors showed behavioral selectivity of sound sources located in the peripheral auditory space. In addition, this group showed a negative/positive mismatch response for deviant stimuli occurring outside the focus of spatial attention. Finally, a group of drummers was compared to woodwind players and nonmusicians in a passive listening task. A real continuous drum sequence was manipulated so that some beats were anticipated by 80 ms. The drummers showed a mismatch response not only for the anticipated beats but also for the subsequent beats, suggesting a more complex representation of the temporal aspects stimulus sequence in this subject group. Together, these studies suggest qualitative differences of the neural correlates of auditory processing between musicians and non-musicians. Moreover, these differences appear to be shaped by the specific training of a musician.

Does ambient light affect the accuracy of pulse oximetry?

OBJECTIVE: Determine whether ambient light affects the accuracy of pulse oximetry readings. DESIGN: Prospective, repeated-measures study. SETTING: A photographic darkroom. SUBJECTS: Forty-five faculty and students at a university, none of whom had pale skin, dark skin, or evidence of cardiopulmonary disease. Any nail polish was removed. METHODS: Five light sources were individually tested: incandescent, quartz-halogen, infrared, fluorescent, and bilirubin light. A pulse oximetry probe was placed on the subject's finger, and the finger and probe were placed sideways under each light source, on a predetermined mark. RESULTS: The greatest difference in pulse oximetry reading between any of the light sources was 0.5%. Repeated-measures analysis of variance yielded a p value of 0.204. CONCLUSIONS: Ambient light has no statistically significant effect on pulse oximetry readings. Even had the differences been statistically significant, the magnitude of the differences was small and thus clinically unimportant.