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The chapter studies strategic default using an experimental approach.

The experiment considers a stochastic asset process and a loan with no down-payment. The treatments are two asset volatilities (high and low) and the absence and presence of social interactions via a direct effect on the subject's payoff.

I demonstrate that (i) people appear to follow the prediction of the strategic default model quite closely in the high asset volatility treatment, and that (ii) incorporating social interactions delays the strategic default beyond what is considered optimal.

The study tests adequately the strategic default using a novel experimental design and analyzes the neighbor's effect on that decision.

This study aims to present the optimization of parameters and effects of annealing and vapor smoothing post-processing treatments on the surface roughness and tensile mechanical properties of fused deposition modeling (FDM) printed acrylonitrile butadiene styrene (ABS).

Full-factorial test matrices were designed to determine the most effective treatment parameters for post-processing. The parameters for annealing were temperature and time, whereas the parameters for the vapor smoothing were volume of acetone and time. Analysis of surface roughness and tensile test results determined influences of the levels of parameters to find an ideal balance between mechanical properties and roughness.

Optimal parameters for vapor smoothing and annealing were determined. Vapor smoothing resulted in significantly higher improvements to surface roughness than annealing. Both treatments generally resulted in decreased mechanical properties. Of all treatments tested, annealing at 100 °C for 60 min provided the greatest benefit to tensile properties and vapor smoothing with 20 mL of acetone for 15 min provided the greatest benefit to surface roughness while balancing effects on properties.

Vapor smoothing and annealing of FDM ABS have typically been studied independently for their effects on surface roughness and material properties, respectively, with varying materials and manufacturing methods. This study objectively compares the effects of each treatment on both characteristics simultaneously to recommend ideal treatments for maximizing the balance between the final quality and performance of FDM components. The significance of the input variables for each treatment have also been analyzed. These findings should provide value to end-users of 3D printed components seeking to balance these critical aspects of manufacturing.

Past studies demonstrated the efficacy of integrated cognitive-behavioral therapy (CBT) for substance use disorder (SUD) and intimate partner violence (IPV) as well as high rates of depressive symptoms in this population. However, little is known about how depressive symptoms impact treatment outcomes. The authors hypothesized that integrated CBT, but not standard drug counseling (DC), would buffer the negative effects of depressive symptoms on treatment response.

A secondary analysis of a randomized trial compared men assigned to 12 weeks of integrated CBT for SUD and IPV (n = 29) to those in DC (n = 34).

Most (60%) of the sample reported any depressive symptoms. Controlling for baseline IPV, reporting any depressive symptoms was associated with more positive cocaine screens during treatment. Among men with depressive symptoms, integrated CBT but not DC was associated with fewer positive cocaine screens. Controlling for baseline alcohol variables, integrated CBT and depressive symptoms were each associated with less aggression outside of intimate relationships (family, strangers, etc.) during treatment. For men without depressive symptoms, integrated CBT was associated with less non-IPV aggression compared to DC. Effects were not significant for other substances, IPV, or at follow-up.

This study found some evidence for differential response to CBT by depressive symptoms on cocaine and aggression at end of treatment, which did not persist three months later. Future studies should explore mechanisms of integrated CBT for SUD and IPV, including mood regulation, on depressive symptoms in real-world samples.

Integrated CBT buffered depressive symptoms’ impact on cocaine use, yet only improved non-IPV aggression in men without depressive symptoms.

Although integrated CBT’s efficacy for improving SUD and IPV has been established, moderators of treatment response have not been investigated.

This chapter summarizes the quantitative literature on whether intervention outcomes for students with learning disabilities (LD) are influenced by variations in IQ and reading level. The analysis clearly shows that a significant intelligence×reading level interaction emerges in treatment outcomes. Across a broad array of interventions it was found that studies which include samples with reading and IQ scores in the 16th and 25th percentile range (standard scores between 84 and 91) yield significantly higher effect sizes than studies that include samples in same low reading range but with higher IQ scores. An analysis of subsets of this data yield similar findings. Implications for definitions of learning disabilities that include measures of intelligence are discussed.

The purpose of this paper is to examine how training specific to a given operational task, and subsequent experiential learning, can heighten skill and hence shift the level of workload at which individuals are most productively motivated.

To analyze these effects, a laboratory experiment was used involving a vehicle routing application and 156 managers exposed to a 2 × 3 complete treatment design. Both multi‐period objective in‐task data and subjective self reports are collected to tap into skill levels, actions and behavioral variables of interest.

In the absence of additional workload challenges, the paper finds that increases in skill may in fact significantly limit and in some cases actually degrade overall motivation, as well as objective performance.

Limitations potentially stem from specific operationalizations of the factors studied as well as selectivity of the subject pool and the context (vehicle routing task).

The implications of the skill‐challenge‐motivation dynamics observed have direct repercussions for existing management models in which training and experience are viewed as having strictly monotonic benefits to performance. The implications also go far to promote more informed models of worker behavior in operations modeling that otherwise view performance as static or monotonically increasing based on experience.

This is believed to be the first study that has explicitly studied the inverted‐U dynamics stemming from the interplay of both skill and workload on motivation and performance, over a multi‐period framework of analysis.

Regression discontinuity (RD) design is a sophisticated quasi-experimental approach used for inferring causal relationships and estimating treatment effects. This paper aims to educate human resource development (HRD) researchers and practitioners on the implementation of RD design as an ethical alternative for making causal claims about training interventions.

To demonstrate the key features of RD designs, a simulated data set was generated from actual pre-test and post-test diversity training scores of 276 participants from three organizations in the USA. Parametric and non-parametric analyses were conducted, and graphical presentations were produced.

This study found that RD design can be used for evaluating training interventions. The results of the simulated data set yielded statistically significant results for the treatment effects, showing a positive causal effect of the training intervention. The analyses found support for the use of RD models with retrospective training intervention data, eliminating ethical concerns from random group assignment. The results of the non-parametric model provided evidence of the plausibility of finding the right balance between precision of estimates and generalizable results, making it an alternative to experimental designs.

This study contributes to the HRD field by explicating the implementation of a sophisticated, statistical tool to strengthen causal claims, contributing to an evidence-based HRD approach to practice and providing the R syntax for replicating the analyses contained herein.

Despite the growing number of scholarly articles being published in HRD journals, very few have used experimental or quasi-experimental design approaches. Therefore, a very limited amount of research has been devoted to uncovering causal relationships.

The literature of financial economics documents a causal relationship between the level of information asymmetry in the firm and its dividend policy. Nevertheless, this relationship suffers endogeneity problems arising from reverse causality and omitted variable bias. The purpose of this study is to examine how the dividend policy reacts to changes in asymmetric information in an exogenous research setting.

To overcome endogeneity concerns, the authors employ the enactment of the Sarbanes-Oxley Act (SOX) in the US in 2002 as a source of an exogenous variation in the level of information asymmetry to study the potential effect that this variation might have on the dividend policy. In doing so, we utilize a difference-in-differences research design, in which the treatment group is US publicly traded firms that were exposed to the policy and the control group is publicly traded companies in the UK where SOX was not enacted. Both countries have similar institutional settings and enforcement of laws, which makes them comparable in this research context.

The authors’ findings show that, compared to UK companies, US firms increase their dividend payments following a reduction in asymmetric information as a result of the SOX enactment.

The study contributes to the literature of financial economics by showing that policy makers can mitigate agency conflicts and protect shareholders by improving the corporate information environment and reducing asymmetric information.

This paper aims to develop a good quality pork sandwich spread incorporated with different levels of antioxidant mixture [butylated hydroxyanisole (BHA) + butylated hydroxytoluene (BHT); 1:1] and to assess sensory, physico-chemical and microbiological properties of frozen product during storage.

Three levels of antioxidant mixture (BHA + BHT; 1:1) i.e. 100, 200 and 400 ppm were tried, and the product was compared for physico-chemical, microbiological and sensory properties along with the control during frozen storage (−18 ± 1°C).

pH and water activity decreased significantly (p < 0.05), whereas water holding capacity, 2-thiobarbituric acid reacting substances value, total plate count and psychrotrophic count increased significantly (p < 0.05) during storage period. No coliform, yeast and molds were detected throughout the study period. There was non-significant (p < 0.05) effect of antioxidant treatment on the scores of colour, texture, juiciness, adhesion ability and spreadability, but scores for flavour and overall acceptability significantly (p < 0.05) increased.

Pork sandwich spread is envisaged to help in providing nutrition to a large section of needy population and will add a new dimension to the convenience foods.

Antioxidant mixture (BHA + BHT, 1:1) treatment improved the sensory and microbiological properties of pork sandwich spread at frozen storage (−18 ± 1°C). At the end of storage period (60 days), the pork sandwich spread was found safe for human consumption. Hence, BHA and BHT antioxidant mixture could be used to improve quality attributes of meat products during storage.

Numeracy skills hinder a consumer’s ability to meet nutrition and calorie consumption guidelines. This study extends the literature on nutritional labelling by investigating how a calorie counter, which displays the total amount of calories consumers add to a shopping basket, aids them in making food choices. This study aims to ascertain whether the calorie counter affects food choices and also how individual and situational factors moderate this effect.

To test the developed hypotheses, the authors designed an online shopping experiment and administered it to a national panel of British consumers. This included a sub-sample from the general population who did not report any food-related health conditions (n = 480) and a separate sub-sample from the same population who had reported a food-related health condition or lived with someone who had one (n = 250).

The results of this study show that the calorie counter leads to a large and statistically significant reduction in calories purchased when compared to the no nutritional information condition and a small (but statistically insignificant) reduction in the number of calories chosen by consumers when compared to the nutritional information only condition. The main effect is moderated by individual factors such as whether or not the person has a health condition and shopping situations which involve time pressure.

Although the main effect of the calorie counter was not statistically significant when compared to the nutrition information only condition, the effect was in the correct direction and was statistically significant for consumers who had a food-related health condition. The conceptualisation and findings of this study are not only largely consistent with Moorman’s (1990) nutrition information utilisation process but also suggest that situational factors should be considered when understanding nutrition information processing.

The findings from this study provide the first evidence to suggest that aggregating calorie information through a calorie counter can be a useful way to overcome consumer numeracy biases, particularly for those with existing health conditions and who are most motivated to use nutritional information. Based on the descriptive statistics, the main effect was comparable to the UK’s sugar tax in its impact and the authors estimate this would lead to a reduction in calories consumed of about 5,000 per year, even for consumers who did not report a health condition. Further testing is required with different formats, but these results are encouraging and are worthy of further research.

To the best of the authors’ knowledge, this is the first study to investigate how consumers react to aggregated nutritional information for a basket of products, mimicking a real shopping situation. Such information has the potential to become more relevant and useful to consumers in the context of their overall diets. As technology advances rapidly, there is a need to explore alternative ways of presenting nutritional information, so it connects more easily with consumers. These results point very much to a more targeted and personally relevant approach to information provision, in contrast to existing mass communications approaches.

Annoying and bothersome behaviours among persons with developmental disabilities (DD) is a relatively frequent phenomenon. However, not all behaviour that is difficult to accept in its surroundings should be seen as abnormal or problem behaviour (PB). Some of these behaviours may be an expression of a person’s psychosocial needs and may be considered as adaptive and normal. The paper aims to discuss these issues.

Authors attempt to discuss relevant issues in persons with DD which have an impact on their behaviour, intending in this way to define criteria for a reliable differentiation between normal and abnormal behaviour and psychiatric disorders.

Differentiating between normal and abnormal may be a difficult task for a professional treating persons with DD because of the lack of adequate criteria for such differentiation. The problem becomes even more complex when one attempts to differentiate between PB and psychiatric disorder. By approaching the subject from a developmental perspective and by determining the level of the person’s emotional development, insight in subjective person’s experiences was achieved. On the ground of a “good practice” the authors made schemata outlining criteria for differentiation between these constructs.

The application of these schemata in the practice made it easier to establish appropriate diagnoses and was favourable for the planning of adequate treatment and support of persons with DD and mental health problems.