The aim of the present study was to investigate whether ingestion of polyphenol-rich dark chocolate improved salivary cortisol levels and subjective mood states in adults recruited from a health and social care setting. Twenty-six participants ingested 25 g/day of a high polyphenol dark chocolate (containing 500 mg of total flavonoids) or a similar amount of a control dark chocolate containing negligible flavonoids for four weeks. Twenty-four-hour salivary glucocorticoid levels (cortisol and cortisone) were measured by an enzyme-linked immunosorbent assay, and subjective mood was assessed using a validated Positive Affect and Negative Affect Schedule. Total daily cortisol, morning cortisol, and the cortisol/cortisone ratio were significantly reduced (p < 0.001) after ingestion of only the high polyphenol dark chocolate. There were no significant differences between groups for overall scores for positive affect and negative affect. No changes were observed after the control dark chocolate, or any other parameter measured. In conclusion, the findings from this small-scale study indicate lowering of salivary cortisol levels following polyphenol-rich dark chocolate in adults recruited from a health and social care setting. Such changes may be attributable to their ability to inhibit 11β-hydroxysteroid dehydrogenase type 1 activity and warrant further investigation.

No abstract

Purpose The purpose of this paper is to explore how young people who offend with others define delinquent and criminal groups and consider the social risk factors associated with gang membership and criminal exploitation. Design/methodology/approach The sample consisted of 15 young people who were purposively sampled from a group of 14- to 17-year-old males who had been identified as at risk of gang involvement and referred to a community-based programme. Using a social identity framework, a thematic analysis was undertaken to investigate how the participants viewed their role in offending as part of a group. Findings The participants identified peer groups, street gangs and the involvement of adult criminals as distinct categories of offending groups. Unlike prior models for gang involvement, some members of the sample were involved in multiple groups to perform different categories of crime. Importantly, participants displayed an awareness of exploitation and described successful exit strategies from criminal groups. Research limitations/implications Understanding how young people who are involved in delinquent behaviour and offending define gang and group offending. Practical implications The implications for gang and group offending prevention and intervention programmes are discussed. Originality/value The literature on child criminal exploitation and UK drug markets is in its infancy. This paper offers further evidence for the processes of joining and leaving delinquent and criminal groups.

C R E N O S w a s s e t u p i n 1 9 9 3 w i t h t h e p u r p o s e o f o r g a n i s i n g t h e j o i n t r e s e a r c h e f f o r t o f e c o n o m i s t s f r o m t h e t w o S a r d i n i a n u n i v e r s i t i e s ( C a g l i a r i a n d S a s s a r i ) i n v e s t i g a t i n g d u a l i s m a t t h e i n t e r n a t i o n a l a n d r e g i o n a l l e v e l . C R E N o S ' p r i m a r y a i m i s t o i m p r o v e k n o w l e d g e o n t h e e c o n o m i c g a p b e t w e e n a r e a s a n d t o p r o v i d e u s e f u l i n f o r m a t i o n f o r p o l i c y i n t e r v e n t i o n . P a r t i c u l a r a t t e n t i o n i s p a i d t o t h e r o l e o f i n s t i t u t i o n s , t e c h n o l o g i c a l p r o g r e s s a n d d i f f u s i o n o f i n n o v a t i o n i n t h e p r o c e s s o f c o n v e r g e n c e o r d i v e r g e n c e b e t w e e n e c o n o m i c a r e a s . T o c a r r y o u t i t s r e s e a r c h , C R E N o S c o l l a b o r a t e s w i t h r e s e a r c h c e n t r e s a n d u n i v e r s i t i e s a t b o t h n a t i o n a l a n d i n t e r n a t i o n a l l e v e l . T h e c e n t r e i s a l s o a c t i v e i n t h e f i e l d o f s c i e n t i f i c d i s s e m i n a t i o n , o r g a n i z i n g c o n f e r e n c e s a n d w o r k s h o p s a l o n g w i t h o t h e r a c t i v i t i e s s u c h a s s e m i n a r s a n d s u m m e r s c h o o l s . C R E N o S c r e a t e s a n d m a n a g e s s e v e r a l d a t a b a s e s o f v a r i o u s s o c i o -e c o n o m i c v a r i a b l e s o n I t a l y a n d S a r d i n i a . A t t h e l o c a l l e v e l , C R E N o S p r o m o t e s a n d p a r t i c i p a t e s t o p r o j e c t s i m p a c t i n g o n t h e m o s t r e l e v a n t i s s u e s i n t h e S a r d i n i a n e c o n o m y , s u c h a s t o u r i s m , e n v i r o n m e n t , t r a n s p o r t s a n d Abstract We study the relationship between suicide rates and socioeconomic factors by using a panel data at Italian province level in the time span 1996-2005. Our analysis focuses on the impact of social norms on suicidal behaviours. In particular, beyond the usual social correlates of suicide rates, we propose an aggregate measure of social conformity which refers to the religious sphere as an area of conflict between individual and social behaviours. GMM and dynamic spatial panel data approach are implemented to control for serial and spatial autocorrelation. The results confirm the primary role of family, alcohol consumption and population density in explaining the suicide rates in Italy, while the economic variables, namely income per capita and economic growth, do not appear to have any effects. IntroductionMore than one hundred years after his seminal work, Emile Durkheim still provides the starting point of any sociological study on suicide. According to Durkheim (1893;1897), the frequency of self-killing in society depends on two factors: social integration and regulation. As a result, four types of suicide can be distinguished: egoistic, anomic...

Purpose Research on the association between individual characteristics of undergraduate students, drop-out and delayed graduation is still evolving. Therefore, further evidence is required. The paper aims to discuss this issue. Design/methodology/approach This paper reports on an empirical study examining the relationship between students’ individual characteristics and delayed graduation. The analysis is based on a sample of 1,167 students who have registered on and have completed a full-time undergraduate programme in Italy. Using a Probit model, the findings document the individual, background and environmental indicators that play a role in explaining delayed graduation. Findings The study observes that students who commute to university perform better than those residing on campus. Other factors increasing the probability of completing the undergraduate programme on time include individual characteristics (e.g. gender and age), student background (family income, education), institutional environment (teaching and research quality) and student satisfaction. Finally, some policy implications are discussed. Social implications A direct policy implication of these findings is that supporting academic staff in order to enhance their performance in both research and teaching has a positive effect on the performance of the students. Originality/value This paper contributes to the debate on the impact of institutional quality on students’ performance, aiming to address the question of balance between teaching and research orientation.