Developmental lead exposure has mixed effects on butterfly cognitive processes

While the effects of lead pollution have been well studied in vertebrates, it is unclear to what extent lead may negatively affect insect cognition. Lead pollution in soils can elevate lead in plant tissues, suggesting it could negatively affect neural development of insect herbivores. We used the cabbage white butterfly (Pieris rapae) as a model system to study the effect of lead pollution on insect cognitive processes, which play an important role in how insects locate and handle resources. Cabbage white butterfly larvae were reared on a 4-ppm lead diet, a concentration representative of vegetation in polluted sites; we measured eye size and performance on a foraging assay in adults. Relative to controls, lead-reared butterflies did not differ in time or ability to search for a food reward associated with a less preferred color. Indeed, lead-treated butterflies were more likely to participate in the behavioral assay itself. Lead exposure did not negatively affect survival or body size, and it actually sped up development time. The effects of lead on relative eye size varied with sex: lead tended to reduce eye size in males, but increase eye size in females. These results suggest that low levels of lead pollution may have mixed effects on butterfly vision, but only minimal impacts on performance in foraging tasks, although follow-up work is needed to test whether this result is specific to cabbage whites, which are often associated with disturbed areas.     

Children’s Play with a Forest Diorama as a Window into Ecological Cognition

This study examined the play of 4-year-old children with a forest diorama that included toy representations of plants and animals. To examine the potential role of culture and expertise in diorama play, children from 3 samples participated: rural Native American, urban Native American, and urban non-Native American. Children’s playtime was divided into time segments, which were coded for types of actions and for types of talk. Children from all 3 samples actively engaged with the diorama in both realistic and imaginative play. Furthermore, children from all samples were sensitive to ecological relations. In addition, Native American children talked at least as much as the non-Native American children, a finding that challenges widespread characterizations of Native American children as less talkative and possessing smaller vocabularies. The most striking finding was that Native American children (both urban and rural) were more than twice as likely as non-Native American children to take the perspective of an animal in their play. These results demonstrate the value of dioramas for assessing young children’s biological cognition.     

The Case Study of Jacob: Childhood Sexual Abuse and the Limitations of the Holding Environment

Childhood sexual abuse and trauma influence relational development in significant ways. Notable among them are the development of a patient's internal object world, fantasies, and sense of self. Dynamic formulations and holding techniques are used to identify, process, and alter fractured relational dynamics. However, the use of such techniques may also influence a patient's narrative process, pulling them away from the realities of their life as lived. Using the case study method, focusing specifically on the patient's narrative development, this article examines the impact of analytic framing on a patient's experience of child sexual abuse and trauma.     

Mindfulness,General Trust,and Social Support Among Trauma-Exposed College Students

The purpose of the present study was to examine whether mindfulness predicts general trust and social support among trauma-exposed college students, as well as to examine the potential moderating effect of posttraumatic stress on these relationships. Participants consisted of 536 trauma-exposed college students attending a public university in the southeast United States. After controlling for PTSD symptoms and type of trauma, mindfulness was positively associated with general trust and social support at low and mean levels of PTSD symptomatology; however, the relationships between mindfulness and these variables were nonsignificant at high levels of PTSD symptomatology.     

Relationship among gender-related stress,resilience factors,and mental health in a Midwestern U.S. transgender and gender-nonconforming population

Background: Transgender and gender-nonconforming individuals experience more discrimination than their cisgender peers, and this discrimination can be associated with poorer mental health. This study used the gender minority stress model as a framework to examine the relationship among gender-related stressors and resilience factors and mental health outcomes. The study particularly aimed to increase knowledge of the gender-nonconforming population.

Methods: A community sample of 83 individuals that identify as a gender different than the sex assigned to them at birth completed an online survey. Depression and anxiety were assessed using the Center for Epidemiological Studies Depression Scale (CES-D) and Beck Anxiety Inventory (BAI), respectively. The Gender Minority Stress and Resilience measure was used to assess distal and proximal stressors and resilience factors.

Results: The median CES-D and BAI scores were 16 and 13, respectively. Forty percent had a history of non-suicidal self-injury (NSSI), 75% had experienced suicidal ideation, and 45% had attempted suicide. Proximal stress was found to be a positive predictor of depressive symptoms. Resilience was a weak negative predictor of anxiety symptoms. Distal stress was a positive predictor of suicide attempts, and resilience factors and hormone use were marginal negative predictors of suicide attempt. Trans women were significantly less likely to have engaged in NSSI, but had a significantly higher proximal stress score than trans men and gender-nonconforming individuals.

Conclusion: Our study found high rates of mental health problems in the trans and gender-nonconforming sample. Our findings in part support the gender minority stress model, with gender-related stress predicting certain mental health problems and resilience being a negative predictor. Overall, gender-nonconforming individuals have had similar experiences and mental health findings as transgender individuals.     

Racial Socialization Practices of White Mothers Raising Black-White Biracial Children

The purpose of this retrospective qualitative study was to examine the impact of monoracial Black or White parents’ racial socialization practices on the process of biracial identity development for their Black-White biracial children. Data were obtained through in-person, semi-structured interviews with ten White monoracial mothers and 11 of their adult (ages 18–40) biracial children. The phenomenological analysis of participants’ experiences raising biracial children and growing up biracial revealed two overarching themes of racial socialization practices interacting with and influencing biracial identity development: creating a biracial family identity and navigating biracial with the outside world. Findings from this study expand the racial socialization research by connecting parental racial socialization with their child’s biracial identity and adding the unique perspective that racial socialization is an interactive family process in interracial families. Additionally, data from this study has important clinical and future research implications.     

The Behavioral Avoidance Task with Anxious Youth: A Review of Procedures,Properties, and Criticisms

The measurement of avoidance behavior in youth with anxiety and related disorders is essential. Historically, the behavioral avoidance task (BAT) has been used as a measure of avoidance that can be tailored to a youth’s particular fear. Although in use for over 90 years, there has yet to be a systematic review of its use, properties, etc. Here we examine the use of the BAT with youth as a measure of avoidance over the past 30 years. Studies have used the BAT as a measure of treatment outcome, to explore theories related to avoidance, and provide evidence for the psychometric properties of phobia questionnaires. Specifically, we compare the results of these studies, the purposes of the BAT, and the types of data collected. Results indicated that the BAT might be particularly sensitive to treatment effects. Furthermore, youth with specific phobias can be expected to complete an average of 30% of the BAT at pre-treatment and 60% at post-treatment. These affects have generally been maintained at 6-month follow-ups. Measures of subjective units of distress (SUDS) proved more consistent than steps completed, but more resistant to treatment effects; researchers can expect a SUDS rating of approximately 55% at pre-treatment and 40% at post-treatment. We review the properties and procedures that are used within these studies and provide a critical review. Overall, the BAT is in need of a standardized procedure to allow for psychometric studies to provide evidence of the task’s reliability and validity.     

A test of the social development model during the transition to junior high with Mexican American adolescents

Mexican American adolescents have higher rates of externalizing problems than their peers from other ethnic and racial groups. To begin the process of understanding factors related to externalizing problems in this population, this study used the social development model (SDM) and prospective data across the transition to junior high school from 750 diverse Mexican American families. In addition, the authors examined whether familism values provided a protective effect for relations within the model. Results showed that the SDM worked well for this sample. As expected, association with deviant peers was the primary predictor of externalizing behaviors. There was support for a protective effect in that adolescents with higher familism values had slower rates of increase in association with deviant peers from 5th to 7th grades than those with lower familism values. Future research needs to determine whether additional culturally appropriate modifications of the SDM would increase its usefulness for Mexican American adolescents.     

Atypical EEG power correlates with indiscriminately friendly behavior in internationally adopted children

While effects of institutional care on behavioral development have been studied extensively, effects on neural systems underlying these socioemotional and attention deficits are only beginning to be examined. The current study assessed electroencephalogram (EEG) power in 18-month-old internationally adopted, postinstitutionalized children (n = 37) and comparison groups of nonadopted children (n = 47) and children internationally adopted from foster care (n = 39). For their age, postinstitutionalized children had an atypical EEG power distribution, with relative power concentrated in lower frequency bands compared with nonadopted children. Both internationally adopted groups had lower absolute alpha power than nonadopted children. EEG power was not related to growth at adoption or to global cognitive ability. Atypical EEG power distribution at 18 months predicted indiscriminate friendliness and poorer inhibitory control at 36 months. Both postinstitutionalized and foster care children were more likely than nonadopted children to exhibit indiscriminate friendliness. Results are consistent with a cortical hypoactivation model of the effects of early deprivation on neural development and provide initial evidence associating this atypical EEG pattern with indiscriminate friendliness. Outcomes observed in the foster care children raise questions about the specificity of institutional rearing as a risk factor and emphasize the need for broader consideration of the effects of early deprivation and disruptions in care.     

Direct and distal effects of noncontingent juice on rumination exhibited by a child with autism

Previous research has demonstrated the efficacy of the noncontingent delivery of foods and liquids at suppressing rumination, the repeated regurgitation and rechewing of partially digested food. However, it is unclear how long this reduction is maintained after caregivers terminate this procedure. The current study examined the direct and distal effects of noncontingent juice on rumination by measuring the duration of rumination during juice delivery and immediately following the termination of juice delivery. Noncontingent juice suppressed rumination, but this suppression was not maintained after delivery termination.