Paying for no reason? (Mis-)perceptions of product attributes in separate vs. joint product evaluation

Consumer decision-making involves the evaluation of options either in isolation or in relation to other alternatives present at the environment. According to Hsee’s evaluability hypothesis, it is easier to evaluate product attributes when they are juxtaposed (i.e., presented jointly) than when they are presented in isolation from each other. Recent research has provided some support to the evaluability hypothesis for the attribute of perceived product quantity. The present research tests the hypothesis in relation to the attribute of perceived fairness. In two experiments, we show that when participants evaluate products in isolation from each other, they err in their judgment of product quantity, and, consequently, they mis-attribute fairness to the seller. In a third experiment, we further show that the inclusion of constant yet unfair price information does not affect the fairness and price judgments. These findings provide evidence for the psychological plausibility of the evaluability hypothesis for the attributes of fairness and product quantity. Moreover, they suggest that isolated product evaluation may be systematically suboptimal for consumers, even when pricing information is included. Therefore, effective consumer decision-making will benefit by allowing the joint evaluation of alternatives.     

Social Exclusion and Civil Law: Experience of Civil Justice Problems among Vulnerable Groups

Combating social exclusion has become a priority target for many governments and was a key factor in the establishment of the Legal Services Commission (LSC) and the Community Legal Service (CLS) in England and Wales in April 2000. This study aims to assess whether socially excluded groups within the general population are more likely to suffer justiciable problems (problems for which there is a potential legal remedy) and whether such groups differ in their problem resolution strategies and advice‐seeking behaviour. We draw upon a large‐scale survey of 5,611 people representative of the population of England and Wales, and a further survey of 197 people in temporary accommodation. Five vulnerable groups are extracted: survey respondents with a long‐term illness or disability, young and elderly respondents, low‐income respondents and those living in temporary accommodation. We identify how some of these vulnerable groups have a high likelihood of experiencing justiciable problems. We also examine advice‐seeking strategies among our vulnerable groups and, where contact was made, which advisers were typically contacted. The findings demonstrate the potentially crucial role of access to justice and advice and legal services in tackling social exclusion.     

Geographical and geodemographic connections between different types of small area as the origins and destinations of migrants to Mid-Wales

Exchanges of population between supposedly ‘urban’ and ‘rural’ spaces have occurred throughout history as people migrate between areas with relatively, densely and sparsely settled populations. However, comparatively little is known about whether the same small areas persistently contribute to the flow and what types of locality are involved. Recent counterurbanising migration represents both a re-location of the centres of population growth from urban to rural areas in many developed countries, and a refashioning of the characteristics and lifestyles of residents occupying the countryside. Mid-Wales classically exemplifies the changing demographic fortune of many rural areas having experienced a long period of population decline, followed by a general but locally fluctuating upturn since the 1970s. Using empirical information from recent British censuses on numbers of 1-year migrants and from a national geodemographic classification of small areas, this paper explores the geographical and socio-economic connections between the origins and destinations of those people who moved into Mid-Wales during the closing decades of the 20th century. It concludes that certain places and types of locality have stronger migratory links enduring beyond the period covered by a single census enumeration.     

Marking scheme for the test for logical order in English language testing:is it fair?

This note discusses a marking scheme for resting a student's ability to order English language sentences in a logical manner. It is shown that, in some circumstances, a student of intermediate ability may have a lower probability of obtaining a pass score than would a student of poor ability who guesses the order of all the sentences.     

Child protection, family support and social work: a critical appraisal of the Department of Health research studies in child protection

This paper provides a critical appraisal of the Department of Health Research Studies in Child Protection and their recommendations for policy and practice. It argues that there are a number of conceptual and methodological problems and a failure to thoroughly articulate and represent the tensions and complexities of child protection work, particularly at the point of allegation and initial referral. In the process it fails to fully appreciate the significance of risk in the current social and political climate, the way front-line professionals, particularly social workers, are held to account and the nature of the responsibilities they carry. As a consequence, the paper suggests that attempts to shift the balance of policy and practice from narrowly defined child protection to family support for children in need may be far more difficult than the research suggests.     

Costs of reproduction in common eiders ( Somateria mollissima ): An assessment of relationships between reproductive effort and future survival and reproduction based on observational and experimental studies

The two traditional approaches to the study of costs of reproduction, correlational and experimental, have been used in parallel in a breeding colony of common eiders ( Somateria mollissima ) and were compared in this paper. The analysis of the observational data was based on a two-strata capture-recapture model, the strata being defined on the basis of the clutch size laid by individual females in a given year. The best model according to AIC C indicated substantial variation in survival, recapture and transition rates, but overall a pattern emerged: females laying large clutches have a somewhat higher survival and much higher capture rate than females laying small clutches, and transition from large to small clutch size occurs much more frequently than the reverse transition. The analysis of the experimental data (adding/removing one egg) showed that no clear effect was found on either survival or transition rates. We conclude by suggesting (1) that condition should be included in multi-strata models in addition to reproductive effort; (2) that a specific study design for estimating the proportion of non-breeding females should be implemented, and (3) that non-breeding (a non-observable state in this study) may be influenced by previous reproduction events.     

Assessing population differentiation and isolation from single-nucleotide polymorphism data

Summary. We introduce a new, hierarchical, model for single-nucleotide polymorphism allele frequencies in a structured population, which is naturally fitted via Markov chain Monte Carlo methods. There is one parameter for each population, closely analogous to a population-specific version of Wright's F _ST , which can be interpreted as measuring how isolated the relevant population has been. Our model includes the effects of single-nucleotide polymorphism ascertainment and is motivated by population genetics considerations, explicitly in the transient setting after divergence of populations, rather than as the equilibrium of a stochastic model, as is traditionally the case. For the sizes of data set that we consider the method provides good parameter estimates and considerably outperforms estimation methods analogous to those currently used in practice. We apply the method to one new and one existing human data set, each with rather different characteristics—the first consisting of three rather close European populations; the second of four populations taken from across the globe. A novelty of our framework is that the fit of the underlying model can be assessed easily, and these results are encouraging for both data sets analysed. Our analysis suggests that Iceland is more differentiated than the other two European populations (France and Utah), a finding which is consistent with the historical record, but not obvious from comparisons of simple summary statistics.     

Testing the effect of conspecific reproductive success on dispersal and recruitment decisions in a colonial bird: Design issues

Factors affecting dispersal and recruitment in animal populations will play a prominent role in the dynamics of populations. This is particularly the case for subdivided populations where the dispersal of individuals among patches may lead to local extinction and 'rescue effects'. A long-term observational study carried out in Brittany, France, and involving colour-ringed Black-legged Kittiwakes (Rissa tridactyla) suggested that the reproductive success of conspecifics (or some social correlate) could be one important factor likely to affect dispersal and recruitment. By dispersing from patches where the local reproductive success was low and recruiting to patches where the local reproductive success was high, individual birds could track spatio-temporal variations in the quality of breeding patches (the quality of breeding patches can be affected by different factors, such as food availability, the presence of predators or ectoparasites, which can vary in space and time at different scales). Such an observational study may nevertheless have confounded the role of conspecific reproductive success with the effect of a correlated factor (e.g. the local activities of a predator). In other words, individuals may have been influenced directly by the factor responsible for the low local reproductive success or indirectly by the low success of their neighbours. Thus, an experimental approach was needed to address this question. Estimates of demographic parameters (other than reproductive success) and studies of the response of marked individuals to changes in their environment usually face problems associated with variability in the probability of detecting individuals and with nonindependence among events occurring on a local scale. Further, very few studies on dispersal have attempted to address the causal nature of relationships by experimentally manipulating factors. Here we present an experiment designed to test for an effect of local reproductive success of conspecifics on behavioural decisions of individuals regarding dispersal and recruitment. The experiment was carried out on Kittiwakes within a large seabird colony in northern Norway. It involved (i) the colour banding of several hundreds of birds; (ii) the manipulation (increase/decrease) of the local reproductive success of breeding groups on cliffpatches; and (iii) the detailed survey of attendance and activities of birds on these patches. It also involved the manipulation of the nest content of marked individuals breeding within these patches (individuals failing at the egg stage were expected to respond in terms of dispersal to the success of their neighbours). This allowed us to test whether a lower local reproductive success would lower (1) the attendance of breeders at the end of the breeding season; (2) the presence of prospecting birds; and (3) the proportion of failed breeders that came back to breed on the same patch the year after. In this paper, we discuss how we dealt with (I) the use of return rates to infer differences in dispersal rates; (II) the trade-off between sample sizes and local treatment levels; and (III) potential differences in detection probabilities among locations. We also present some results to illustrate the design and implementation of the experiment.