Development of anxiety disorders is associated with neurobiological changes in areas that are a critical part of the fear neurocircuitry. Fear conditioning paradigms can offer insight into the mechanisms underlying the neurobiological ontogeny of anxiety. A small number of studies have focused on the effects of age and anxiety separately in school age children. The present study aimed to investigate these effects in 8-13 year old children with higher and lower trait anxiety. We examined differential fear conditioning and extinction using skin conductance responses and fear-potentiated startle in 60 children recruited from a low-income urban population. The results indicated that children under 10 years of age show poor discrimination of conditioned stimuli, and that anxiety increases fear responses during fear acquisition. After controlling for age and trauma exposure, fear-potentiated startle to the safety cue predicted child anxiety levels suggesting that impaired safety signal learning may be a risk factor for anxiety disorders in adulthood. Identifying risk phenotypes in children may provide opportunities for early intervention and prevention of illness.

No abstract

Objective Parents and children affected by pediatric cancer are at risk for psychological distress, including depression, anxiety, and post-traumatic stress. A link is believed to exist between parent and child distress; however, no systematic analysis of this relationship has occurred. A meta-analysis was conducted to assess the relationship between parent and child distress among families affected by pediatric cancer. Methods A systematic review and meta-analysis was conducted using EBSCO (searching PsycINFO, MEDLINE, Academic search Premiere, and Health Source: Nursing/Academic Edition) and PubMed. The initial search yielded a total of 29,118 articles. Inclusion criteria were that studies assessed the relation between parent and child distress in the context of pediatric cancer, were written in English, and were published in peer-reviewed journals. 28 articles met inclusion criteria. Results A statistically significant association was found between overall parent and child distress (r = .32, p < .001), such that increased parent-reported distress was associated with increased distress in their children. Significant relationships were also present among each type of parental distress (i.e., depression, anxiety, post-traumatic stress, and global distress; rs = .31–.51, ps < .001) and overall child distress. Moderation analyses via meta-regression indicated that parent proxy-report of child symptoms was associated with a stronger relationship between parent and child distress than child self-report of their own distress. Conclusions Aligned with the social–ecological framework, familial factors appear to be highly relevant in understanding distress following pediatric cancer diagnosis. Indeed, greater parent distress was associated with greater child distress.

Fear conditioning studies in adults have found that posttraumatic stress disorder (PTSD) is associated with heightened fear responses and impaired discrimination. The objective of the current study was to examine the association between PTSD symptoms and fear conditioned responses in children from a highly traumatized urban population. Children between 8 and 13 years old participated in a fear conditioning study in addition to providing information about their trauma history and PTSD symptoms. Results showed that females showed less discrimination between danger and safety signals during conditioning compared to age-matched males. In boys, intrusive symptoms were predictive of fear responses, even after controlling for trauma exposure. However, in girls, conditioned fear to the danger cue was predictive of self-blame and fear of repeated trauma. This study suggests there are early sex differences in the patterns of fear conditioning and that these sex differences may translate to differential risk for trauma-related psychopathology.

Compared to peers with asthma or allergies, college students with other chronic illnesses reported higher levels of anxious symptoms. Illness uncertainty and intrusiveness appear to be predictors of psychological distress, regardless of illness.