Cooperative responding in rats: II. Performance on fixed-ratio schedules of mutual reinforcement

Coordinated responses of 5 dyads of rats were investigated under fixed-ratio (FR) schedules of mutual water reinforcement. Coordinated responding was defined as 2 consecutive lever-presses, 1 from each of 2 rats, occurring <.5 s apart. In the FR schedules, each coordinated episode was defined as 1 response in the FR sequence. The size of FR schedules was parametrically manipulated assuming the values of FR 1, 6, 12, 18, 24, 30, 50, and 9, in this order. Each FR remained in effect until responding reached stability. Under all conditions, pairs of rats received access to water simultaneously (mutual reinforcement). Rates and proportions of coordinated responding showed a bitonic inverted U-shaped function of ratio size. Postreinforcement pauses increased systematically as the interreinforcement interval increased. Local rates and proportions increased as a function of response location within ratios. Results of a control condition with relaxed temporal constraints for mutual reinforcement showed decreases in rates and proportion of coordinated responses, suggesting that the coordinated responses were controlled by the mutual reinforcement contingencies. The present experiment showed that coordinated responding is quantitatively affected by 3 properties of FR schedules: response requirement, reinforcement rates, and proximity to reinforcement.     

COCAINE ADDICTS AND THEIR FAMILIES: AN EMPIRICAL STUDY OF THE PROCESSES OF IDENTIFICATION

The processes of identification between adolescent cocaine addicts and their parents were studied in 402 subjects, in total 134 familial triads (father"mother"son), subdivided into two groups of 67 triads, one of these groups having as the child an adolescent of masculine sex dependent on cocaine and the other, equal in number, being a control group, duly matched for age and socio-economic status. The instrument employed was the Rorschach test (1922), limited to the application of the Lerner Defense Scale (LDS; Lerner & Lerner, 1980). The findings in the affected triads showed up as consistent statistically for the presence of intense processes of pathological identification, especially between father and son, a sign of the importance of the presence of disturbances of paternal function in the development of this addiction. The utilisation of very regressive defence mechanisms, above all of projective identification, was the predominant mode of procedure in triads with a dependent child. In comparisons between the fathers the odds ratio (OR) for projective identification was 8.66 to 1, which points to the association between cocaine addiction and the primitive mental functioning of the fathers. With empirical methodology these findings serve to corroborate the psychoanalytical conclusions based on studies of single case studies, testifying that the dysfunctions of identificatory phenomena in familial functioning are predominant in the mental organisation of cocaine addicts.     

Cycloheximide blocks the retention of maternal experience in postpartum rats

Two studies were done to determine the effects of cycloheximide (CYX), a protein synthesis inhibitor, on maternal experience effects in rats. In the first study eight groups received a 2-h maternal experience 36 h after cesarean (c)-section and two groups received no post c-section experience. Among the experienced groups, two received icv injections of CYX or saline (SAL) 30 min before the maternal experience, two received CYX or SAL 10 min after the experience, and two received the injections 24 h after the experience. One inexperienced group received CYX and the other received SAL 36 h after c-section. Tests for maternal behavior occurred 10 days after c-section. CYX was not able to block or disrupt the "acquisition" or expression of ongoing maternal behavior during the 2-h experience phase. However, CYX was able to block the long-term "retention" of a 2-h maternal experience if the drug was present during or immediately after the experience, prior to "consolidation." The second study investigated the effects of CYX administered immediately after the maternal experience on the expression and retention of maternal behavior 4 and 6 days after c-section, to determine whether the hormonally mediated short-onset latencies of the 4-day group would be blocked by CYX. Eight groups of animals were tested for maternal behavior. Four were tested 4 days after c-section and four were tested 6 days after c-section. Within each of these groups two were experienced and two inexperienced; within each experience condition one group received CYX and one received SAL. Day 4 groups exhibited shorter onset latencies than Day 6 groups. There was also a CYX-SAL difference in maternal onset latencies among experienced Day 6 groups but not among Day 4 groups. These data indicate that the blocking effects of CYX can be seen only when hormonal priming of maternal behavior is no longer in evidence.     

Application of the Minority Stress Theory: Understanding the Mental Health of Undocumented Latinx Immigrants

This paper applies the Minority Stress framework to data collected from an ongoing community-based participatory research project with health and social service agencies in Southeast Michigan. We examine the stressors and coping strategies employed by undocumented Latinx immigrants and their families to manage immigration-related stress. We conducted in-depth interviews with 23 immigrant clients at Federally Qualified Health Care Centers (FQHC) in Southeast Michigan and 28 in-depth interviews with staff at two FQHC's and a non-profit agency serving immigrants. Findings suggest that immigrants face heightened anxiety and adverse mental health outcomes because of unique minority identity-related stressors created by a growing anti-immigrant social environment. Chronic stress experienced stems from restrictive immigration policies, anti-immigrant rhetoric in the media and by political leaders, fear of deportation, discriminatory events, concealment, and internalized anti-immigrant sentiment. Though identity can be an important effect modifier in the stress process, social isolation in the immigrant community has heightened the impact of stress and impeded coping strategies. These stressors have resulted in distrust in community resources, uncertainty about future health benefits, delayed medical care, and adverse mental health outcomes. Findings provide a framework for understanding the unique stressors experienced by immigrants and strategies for interventions by social service agencies.     

Comparison of outcome in men and women after treatment in psychiatric security hospitals in Germany

Previous research has shown that forensic psychiatric treatment reduces reoffending, rehospitalization and premature mortality. Treatment outcome varies with diagnosis, but little is known about the influence of sex, psychosocial adjustment and aftercare. To assess these variables, we interviewed male and female patients discharged from three psychiatric security hospitals in Germany in the years 2010–2017. Participants were interviewed at discharge (n = 609) and 1 year later (n = 366) about reoffending, readmissions, substance use and psychosocial adjustment. Among patients with substance use disorder (SUD), 14% reoffended, 20% were re-hospitalized and 60% maintained abstinence. Among patients with severe mental disorder, 5% reoffended and 13% were re-hospitalized. Significant sex differences were found in offenders with SUD. The results suggest that sociodemographic and disorder-related risk factors are associated with treatment success and that female patients with SUD might need a specific treatment approach. Sex-specific aspects, diagnosis and psychosocial adjustment should be considered in forensic psychiatric treatment and risk assessment.     

Development and preliminary validation of the Paediatric Awareness Questionnaire for children and adolescents with traumatic brain injury

There is a lack of validated measures for assessing self-awareness of deficits after pediatric traumatic brain injury (TBI). The current study aimed to develop and examine the psychometric properties of the Paediatric Awareness Questionnaire (PAQ), and investigate factors related to self-awareness. The PAQ was administered to 32 children aged 8–16 years with mild to severe TBI (72% male, M age = 11.75, SD = 2.9), their parents, and treating clinicians, and to 32 age- and gender-matched typically developing controls and their parents. Children with TBI and their parents also completed the Knowledge of Injury Checklist (KIC), and parents completed the Depression Anxiety and Stress Scale 21. The PAQ was found to have fair to excellent (α = .79–.97) internal consistency for all versions across both groups and good concordance between parent and clinician total scores (ICC = .78). There was also evidence of convergent validity between the PAQ and KIC for both child (r = ?.45, p < .05) and parent ratings (r = ?.66, p < .001). Poorer self-awareness was significantly related to younger age at injury for the TBI group and lower parental education for the total sample. ANCOVA identified that children with TBI demonstrated significantly poorer awareness than controls after controlling for parental education. Children with TBI typically overestimated their functioning compared to their parents, whereas typically developing children tended to rate their functioning lower than their parents. These findings provide preliminary support for the reliability and validity of the PAQ for assessing self-awareness after pediatric TBI.     

Adaptation of Nussbaum's Capabilities Framework to Community Mental Health: A Consumer‐Based Capabilities Measure

The capabilities approach provides a rich evaluative framework to guide transformative change in the community mental health system. This study reports the content and construct validity and psychometric properties of a contextualized measure of the extent to which mental health programs foster achieved capabilities. The Achieved Capabilities Questionnaire for Community Mental Health (ACQ‐CMH), adapted from Nussbaum's capabilities framework, was developed previously with consumer collaboration. Content validity was assessed through a collaborative process, involving a panel of eight consumers, staff members, and senior researchers. The resulting shorter version (ACQ‐CMH‐98) was completed by 332 community mental health consumers sampled throughout Portugal. Factor (PCA) analysis, internal consistency reliability, and test–retest reliability over 2 weeks (N = 33) showed good psychometric properties. The resulting six‐factor structure with 48 items explains 48.88% of the total variance (KMO = 0.89; Bartlett p = .00). Internal consistency of the obtained dimensions ranges from .91 to .76. Associations of the measure with recovery, quality of life, and psychological distress scales add further evidence of construct validity. The adaptation of Nussbaum's framework stressed specific components that may enhance understanding and change within the community mental health system.