Identifying Emergent Social Networks at a Federally Qualified Health Center-Based Farmers’ Market

Identifying potential mechanisms connecting farmers’ market interventions with health, economic, and community outcomes could inform strategies for addressing health disparities. The present study used social network theory to guide the in-depth examination of naturally occurring social interactions at a farmers’ market located at a federally qualified health center located in a rural, low-income community. Trained observers recorded 61 observation logs at the market over 18 weeks. Thematic analysis revealed a range of actors and nonhuman facilitators instrumental to the farmers’ market context. These actors connected with one another for communication and relationship development, economic and financial exchange, education, resource sharing, community ownership of the farmers’ market, and conflict resolution. These interactions provided opportunities for social networks to develop among attendees, which may have facilitated the acquisition of social supports related to improved health, economic and community outcomes. Results provide insight into the role social networks may play in mediating the relationship between a farmers’ market intervention and individual benefits. Findings also contribute to defining the typology of social networks, which may further disentangle the complex relationships between social networks and health outcomes. Future research should identify strategies for purposefully targeting social networks as a way to reduce diet-related health disparities.     

The role of stress,social support,and family environment in adolescent mothers' parenting

Adolescent childbearing is a major social and economic problem in the US. The authors assessed the role of stress, social support, and family environment upon adolescent mothers' parenting behaviors. 75 African-American, mother-infant pairs participated in the study. Each mother was administered a questionnaire and observed in a ten-minute teaching task with her baby. The study found that the adolescent mother's mother was the most frequent provider of support and the baby's father was the most frequent source of conflict. Mothers who identified more individuals as a source of conflict tended to have less positive parenting behaviors. Child age and interpersonal conflict were found through analysis to be significant predictors of maternal behavior. Furthermore, social support moderated the effects of interpersonal conflict when conflicted networks were large. Parenting stress was not a significant predictor of maternal behavior.     

Salience from multiple feature contrast: Evidence from saccade trajectories

We used eye tracking to quantify the extent to which combinations of salient contrasts (orientation, luminance, and movement) influence a central salience map that guides eye movements. We found that luminance combined additively with orientation and movement, suggesting that the salience system processes luminance somewhat independently of the two other features. On the other hand, orientation and movement together influenced salience underadditively, suggesting that these two features are processed nonindependently. This pattern of results suggests that the visual system does not sum sources of salience linearly, but treats some sources of salience as redundant.