Martin Eling, Simone Farinelli, Damiano Rossello and Luisa Tibiletti
Recent literature discusses the persistence of skewness and tail risk in hedge fund returns. The aim of this paper is to suggest an alternative skewness measure, Azzalini's…
Abstract
Purpose
Recent literature discusses the persistence of skewness and tail risk in hedge fund returns. The aim of this paper is to suggest an alternative skewness measure, Azzalini's skewness parameter delta, which is derived as the normalized shape parameter from the skew‐normal distribution. The paper seeks to analyze the characteristics of this skewness measure compared with other indicators of skewness and to employ it in some typical risk and performance measurements.
Design/methodology/approach
The paper first provides an overview of the skew‐normal distribution and its mathematical formulation. Then it presents some empirical estimations of the skew‐normal distribution for hedge fund returns and discusses the characteristics of using delta with respect to classical skewness coefficients. Finally, it illustrates how delta can be used in risk management and in a performance measurement context.
Findings
The results highlight the advantages of Azzalini's skewness parameter delta, especially with regard to its interpretation. Delta has a limpid financial interpretation as a skewness shock on normally distributed returns. The paper also derives some important characteristics of delta, including that it is more stable than other measures of skewness and inversely related to popular risk measures such as the value‐at‐risk (VaR) and the conditional value‐at‐risk (CVaR).
Originality/value
The contribution of the paper is to apply the skew‐normal distribution to a large sample of hedge fund returns. It also illustrates that using Azzalini's skewness parameter delta as a skewness measure has some advantages over classical skewness coefficients. The use of the skew‐normal and related distributions is a relatively new, but growing, field in finance and not much has been published on the topic. Skewness itself, however, has been the subject of a great deal of research. Therefore, the results contribute to three fields of research: skewed distributions, risk measurement, and hedge fund performance.
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Raffaele Zanchini, Simone Blanc, Liam Pippinato, Giuseppe Di Vita and Filippo Brun
As is well known, there are several aspects that characterise honey consumption and the reasons for purchasing it. Despite this, little attention has been paid to the drivers that…
Abstract
Purpose
As is well known, there are several aspects that characterise honey consumption and the reasons for purchasing it. Despite this, little attention has been paid to the drivers that move consumers towards the use of honey for its health benefits and therapeutic properties. The aim of this study is to define which drivers move the consumption of honey for its health benefits.
Design/methodology/approach
The study, conducted on 640 Italian honey consumers, applied inferential tests (Chi-square) and an econometric model (logit regression), and showed that about 66% of the respondents stated that they consume honey for its health properties.
Findings
The main drivers of honey consumption are both among the intrinsic (Colour) and extrinsic (Origin and Organic certification) attributes of the product. What also emerges is that the propensity to consume honey for health purposes is influenced by the consumer characteristics and habits, such as Age cohort, Gender, BMI and Large retail buyer. Moreover, we observed that consumption is influenced by BMI but not by lifestyle characteristics such as sport and diet.
Originality/value
This study could be a support tool for policymakers who are interested in promoting good nutrition and improving public health, since there is great interest in the functional properties of foods and the need to enhance the value of products, while at the same time ensuring consumer protection.
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Simone Pettigrew and Melanie Pescud
The purpose of this paper is to evaluate the ability of a social marketing intervention to provide families with specific nutrition information, stimulate family discussions on…
Abstract
Purpose
The purpose of this paper is to evaluate the ability of a social marketing intervention to provide families with specific nutrition information, stimulate family discussions on the topic of nutrition, and encourage parents to make changes in their child‐feeding practices.
Design/methodology/approach
A postcard intervention was administered to families with children aged five to 12 years at three primary schools in Western Australia. Approximately two months later, an evaluation questionnaire was administered to the three intervention schools and a control school.
Findings
In total, 229 usable questionnaires were returned, representing a 22 percent response rate. In the intervention schools, almost half of the respondents reported discussing the contents of the postcards with their children and a third reported giving the cards to their children to read. The intervention was successful in encouraging a majority (60 percent) of respondents to make at least one favourable change to their child‐feeding practices, in line with the recommendations provided.
Originality/value
The study demonstrated that a simple and cost‐effective social marketing intervention can encourage family discussions on the topic of nutrition and favourably influence parents' child‐feeding practices.