The influence of norms and social identities on children's responses to bullying

Background. Research on bullying increasingly focuses on social processes, showing that group membership affects children's responses to bullying scenarios. Additionally, correlational research has shown links between norms of cooperation and prosocial behaviour, and between competition and more aggressive forms of behaviour. Aims. This paper focuses on how children's peer group membership affects their group‐based emotions in response to an intergroup bullying incident, and the action tendencies that these emotions predict, in the context of different background norms (for competitive or cooperative behaviour). Sample. Italian schoolchildren, 10–13 years old (N= 128, 65 males) took part in this study. Methods. Participants were randomly assigned to the group of a perpetrator, target, or third‐party group member described in a scenario. Next, they played a game designed to induce a cooperative, competitive, or neutral norm, and read the scenario. They then answered a questionnaire measuring their group‐based emotions. Results. Results underscored the role of norms and group processes in responses to bullying. In particular, children exposed to a cooperative norm expressed less pride and more regret and anger about the bullying than those in other conditions. Conclusions. This study indicates that the influence peer groups have on bullying may be tempered by the introduction of a cooperative normative context to the school setting.     

The homicidol effect: investigating murder as a fitness signal

This article extends homicide adaptation theory by investigating signal effects of a murder. In two experiments (N = 299 and N = 161) participants reported their perceptions of a described person. The first study manipulated the information about the person (including or excluding a single sentence stating that the person has committed a murder) and stimulus person/observer sex match (same vs. opposite sex). Results suggest that murder functions as a signal of the described person's fitness that enhances observers' evaluations and inclination to interact with the person. Opposite-sex observers evaluate the murderer's intent more favorably than same-sex observers, but these evaluations of intent produce differential (positive vs. negative) effects between the two groups. The second study replicated the findings and ruled out potential confounds.     

Prosodic Awareness Skills and Literacy Acquisition in Spanish

There has been very little research in Spanish on the potential role of prosodic skills in reading and spelling acquisition, which is the subject of the present study. A total of 85 children in 5th year of Primary Education (mean age 10 years and 9 months) performed tests assessing memory, stress awareness, phonological awareness, reading and spelling. In written language tests, errors were classified as phonological (grapheme-to-phoneme conversion rules) or stress-related (placement of the stress mark). Regression analyses showed that, once memory and phonological awareness were controlled, stress awareness partially explained reading and spelling performance as well as error type; however, differences were found between reading and spelling errors. These results show a relationship between prosodic skills--namely stress sensitivity--and the acquisition of reading and spelling skills that seems to be independent of phonological awareness skills.     

Ingestive behavior in rat pups is modified by maternal sodium depletion

Developmental programming by maternal stress during pregnancy is found to influence behavioral development in the offspring. The main objective of this study was to investigate the effect of maternal sodium depletion in rats during pregnancy on the development of thirst mechanisms in the offspring. Pregnant rats underwent 3 episodes of saline depletion, induced by injecting sc 10 mg of Furosemide in saline (0.5 ml). The treatment, given on the 14th, 17th and 20th days post-conception, is thought to induce acute sodium depletion on dams. The offspring were tested for their drinking responses to Isoproterenol (500 μg/kg sc). In accordance to the known sequence of ontogenic development of drinking mechanisms, all groups of pups drunk after being stimulated with Isoproterenol at 6 days of age. The offspring from Furosemide-treated dams drank significantly less than the control group after Isoproterenol (p<0.001). Nevertheless, basal intake (water drunk after vehicle-saline only) was also significantly lower in these pups (p<0.001). In conclusion, offspring exposed to saline depletion in utero, modify their thirst responses at 6 day of age. This confirms that in utero conditions determine thirst responses in the offspring and they could provide adaptive advantages.