A THERAPEUTIC PLAYGROUP FOR DEPRESSED MOTHERS AND THEIR INFANTS: FEASIBILITY STUDY AND PILOT RANDOMIZED TRIAL OF COMMUNITY HUGS

Symptoms of depression negatively impact on mother?infant relationships and child outcomes. We evaluated a novel, 10‐session mother?infant therapeutic playgroup—Community HUGS (CHUGS)—which combines cognitive and experiential components through psychoeducation, play, music, and movement. Participants were mothers experiencing a range of postnatal mental health difficulties, including depression, with infants ≤12 months of age. However, the aim was not to treat maternal depression but to ameliorate associated problems in the mother?infant interaction. In the feasibility study, all participants received CHUGS. In the pilot randomized controlled trial (RCT), participants were randomized between intervention and a wait‐list. Outcomes were the Parenting Stress Index (PSI; R.R. Abidin, 1995), Parenting Sense of Competency Scale (Self‐Efficacy subscale; J. Gibaud‐Wallston & L.P. Wandersman, 1978), and the Depression, Anxiety, Stress Scales (P.F. Lovibond & S.H. Lovibond, 1995). In the feasibility study (n = 74), PSI scores dropped on all subscales, all ps < .01. Depression, p < .001, anxiety, p = .01, stress, p = .01, and self‐efficacy, p < .001, all showed improvements, as did observer‐rated mother?infant interactions, p < .001. In the RCT, depression, p < .001, anxiety, p = .005, and stress, p < .001, symptoms were significantly reduced for intervention participants (n = 16), as compared to wait‐list participants (n = 15). The CHUGS program had high participant satisfaction and produced improvements in self‐efficacy, depression, anxiety, stress, and mother?infant interactions that supported the program's acceptability and the utility of further rollout.     

Optimal decision making in neural inhibition models

In their influential Psychological Review article, Bogacz, Brown, Moehlis, Holmes, and Cohen (2006) discussed optimal decision making as accomplished by the drift diffusion model (DDM). The authors showed that neural inhibition models, such as the leaky competing accumulator model (LCA) and the feedforward inhibition model (FFI), can mimic the DDM and accomplish optimal decision making. Here we show that these conclusions depend on how the models handle negative activation values and (for the LCA) across-trial variability in response conservativeness. Negative neural activations are undesirable for both neurophysiological and mathematical reasons. However, when negative activations are truncated to 0, the equivalence to the DDM is lost. Simulations show that this concern has practical ramifications: the DDM generally outperforms truncated versions of the LCA and the FFI, and the parameter estimates from the neural models can no longer be mapped onto those of the DDM in a simple fashion. We show that for both models, truncation may be avoided by assuming a baseline activity for each accumulator. This solution allows the LCA to approximate the DDM and the FFI to be identical to the DDM.     

Application of a CBPR Framework to Inform a Multi-level Tobacco Cessation Intervention in Public Housing Neighborhoods

African American women in urban, high poverty neighborhoods have high rates of smoking, difficulties with quitting, and disproportionate tobacco-related health disparities. Prior research utilizing conventional "outsider driven" interventions targeted to individuals has failed to show effective cessation outcomes. This paper describes the application of a community-based participatory research (CBPR) framework to inform a culturally situated, ecological based, multi-level tobacco cessation intervention in public housing neighborhoods. The CBPR framework encompasses problem identification, planning and feasibility/pilot testing, implementation, evaluation, and dissemination. There have been multiple partners in this process including public housing residents, housing authority administrators, community health workers, tenant associations, and academic investigators. The advisory process has evolved from an initial small steering group to our current institutional community advisory boards. Our decade-long CBPR journey produced design innovations, promising preliminary outcomes, and a full-scaled implementation study in two states. Challenges include sustaining engagement with evolving study partners, maintaining equity and power in the partnerships, and long-term sustainability of the intervention. Implications include applicability of the framework with other CBPR partnerships, especially scaling up evolutionary grassroots involvement to multi-regional partnerships.     

Adding odor: Less distress and enhanced attention for 6-month-olds

The effect of odor on cognitive and emotional processes has been studied in adults and children, but less so in infants. In this study twenty-seven six-month-olds were presented with a video while in either an odor (pine or baby-powder) or a no odor control condition. The video was a 92-s audiovisual presentation of a woman expressing happiness and sadness, with the order of emotion counterbalanced. Infant attention (looking time) and emotional expression (smiling, crying, mouthing) were coded. Infants looked longer in the presence of odor and expressed less crying and mouthing but more smiling behavior. Presence of odor markedly reduced infant emotional distress and increased attention, suggesting that the olfactory sensory system provides cues to infants that support mood regulation and maintain attention. These results have implications for optimizing infant environments for emotional health and cognitive development.     

The Heuristic Power Of Oppositionality In An Incidental-Memory Task: In Support Of The Construing Process

From a personal construct view, construing is a top-down process in which wider meanings predicate narrower, targeted meanings. Predicate contexts are invariably oppositional, as Kelly's (1955) theory reflects. Two memory experiments using college subjects are presented. Subjects were asked to focus on a series of 30 target words to determine if they were similar in meaning to a predicating word (e.g., friendly). Ten of these target words were relevant (e.g., congenial), 10 were opposite (e.g., impolite), and 10 were irrelevant (e.g., abstract) in meaning to the predicating word. Subjects were then (unexpectedly) asked to recall as many words as possible. In line with experimental instructions, the majority of these recalled words were relevant to the predicating word. However, as predicted, in both experiments significantly more opposite than irrelevant words were recalled (p < .001). The results are in support of a personal construct view of human cognition.     

Lateralized reaching as dynamical symmetry breaking in the bushbaby (Otolemur garnettii): preliminary evidence

Eight bushbabies were subjected to an extensive series of hand preference trials in which they were required to reach for a raisin from a rotating platform approaching from the right- or left-hand side of their visual field. Three principal types of behavior were observed. Several individuals known to be stable in hand preference continued to show a strong preference for a single hand. Another group, including some previously categorized as stable, exhibited "ambidextrous" cross-body reaching behavior. One individual exhibited far more complex behavior, being ambidextrous at low and very high speeds but lateralized at intermediate speeds. A straightforward adaptation of the dynamical neural field theory of Sch?ner et al. (1997) provides a model allowing each type of behavior, except possibly the shift from lateralized behavior to ambidextrous behavior at high speed, which might nonetheless be accommodated with minor modification.     

The Impact of Physical Maltreatment History on the Adolescent Mother–Infant Relationship: Mediating and Moderating Effects During the Transition to Early Parenthood

Using attachment theory as a framework, this paper examines how pregnant adolescents' experiences of physical maltreatment during childhood influence the subsequent mother-infant relationship in 203 low-income adolescents followed from the 3rd trimester of pregnancy through the 1st year of parenthood. The relation between physical maltreatment history and early difficulty in the mother-infant relationship was mediated by adolescents' evaluations of the relationship with their primary caretaker and the feelings they associated with motherhood measured prior to childbirth. In addition, a supportive romantic relationship during pregnancy acted as a protective factor by moderating the impact of maltreatment history on the quality of the subsequent mother-infant relationship. Findings support the importance of assessments and interventions that consider the social context and relational history of pregnant and parenting adolescents.     

A dynamical model of general intelligence: the positive manifold of intelligence by mutualism

Scores on cognitive tasks used in intelligence tests correlate positively with each other, that is, they display a positive manifold of correlations. The positive manifold is often explained by positing a dominant latent variable, the g factor, associated with a single quantitative cognitive or biological process or capacity. In this article, a new explanation of the positive manifold based on a dynamical model is proposed, in which reciprocal causation or mutualism plays a central role. It is shown that the positive manifold emerges purely by positive beneficial interactions between cognitive processes during development. A single underlying g factor plays no role in the model. The model offers explanations of important findings in intelligence research, such as the hierarchical factor structure of intelligence, the low predictability of intelligence from early childhood performance, the integration/differentiation effect, the increase in heritability of g, and the Jensen effect, and is consistent with current explanations of the Flynn effect.