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The purpose of this paper is to investigate the elements of user manual quality and its influences on perceived product quality and customer satisfaction in an integrated model structure.

Survey method was used to evaluate user manual quality and its influences on perceived product quality and customer satisfaction. Electrical appliances consumers were chosen in our sample. Factor analysis and structural equation modeling were performed to introduce, test and validate the user manual quality dimensions and also test the hypotheses.

The findings show a positive significant relation between user manual quality and perceived product quality, and this result demonstrates that consumers perceive user manual quality as a part of their quality evaluation related to the product. The results point out that user manual quality is essential for both low- and high-value products regarding customer satisfaction. The findings also reveal that perceived product quality mediates the influence of user manual quality on customer satisfaction.

This study reveals that providing a high-quality user manual should be an essential element of product management and development strategies. The findings also highlight the need for companies that particularly sell complex products with long product life cycles must invest in providing high-quality user manuals. This will enhance perceived product quality and in turn customer satisfaction.

Although some prior studies address user manuals in the relevant literature, these studies did not examine the elements of user manual quality and their impact on consumers’ perceptions of the product quality and their satisfaction evaluations in a research model. This paper attempts to fill this gap in the literature. In addition, the authors found two major dimensions of user manual quality as content-related elements and representational/format-related elements of the user manual.

The purpose of this paper is to provide a historical account of organizational citizenship behavior (OCB) based on the existing literature.

The paper performs keywords search of published articles from 1930 to 2017 in widely used research databases.

The historical review shows that the OCB, as a field of study, was slow to develop. Although it has been introduced in the late 1970s and officially defined in the 1980s, its origins can be traced back to the 1930s. Despite this, OCB is generally regarded as a relatively new construct and has become one of the biggest subjects studied in the literature. OCB has reached far and wide into the business and management domains, supporting the fact that the well-being employees and their behaviors can greatly affect organizations’ effectiveness and performance. Having been the topic of a significant number of studies, there have been inconsistent research findings regarding the concepts. Furthermore, some concepts have been noted to overlap, with several scholars using different terms for essentially similar concepts.

The advent of technology and globalization has greatly affected organizations today which resulted in increased competition in the global business. Firms have started to look into the behavior exhibited by employees as a means of achieving competitive advantage, such as OCB. Voluminous works have been conducted regarding the study of OCB; however, none have been recorded to make an in-depth exploration of when and how it first surfaced. Since its official introduction, explorations regarding OCB have dramatically increased, most especially in the twenty-first century. Unfortunately, this has resulted in an increasing difficulty to keep up with the theoretical and empirical developments in the literature. As interest in OCB continues to grow, coherent integration of the concept becomes progressively more complex and necessary. This paper looks into the chronological evolution of the OCB, giving precise details of its development from the time it was first conceptualized up until the present wherein OCB has been used to indicate organizational effectiveness and performance.

Recent studies have shown that hyperuricemia is a predictor of non-communicable disease and an increment of mortality rate. Also, elevated serum uric acid may be associated with obesity in the adult population. This study aims to evaluate the association between serum uric acid levels with metabolic parameters and risk of obesity in the Iranian population.

The cross-sectional study was done on 550 participants, who were referred to a hospital for elective angiography in Rasht, Iran; anthropometric indices (waist circumference (WC) and body mass index (BMI)) and hematological factors were measured using the standard approaches. Based to the angiography results, the severity of atherosclerosis was defined.

The mean (SD) concentration of serum uric acid for all participants was 5.15 (1.37) mg/dl. Individuals who were at the highest tertile had higher mean (SD) of weight (p = 0.004), creatinine and blood urea nitrogen (p < 0.001) lower fasting blood sugar (FBS) (p = 0.000) and HbA1c (p = 0.016), and they were mostly men compared with those in the lowest tertile. After adjusting for confounders, FBS (ß = –0.145, p = 0.001) and HbA1c (%) (ß = –0.130, p = 0.019) had inverse and weight (ß = 0.156, p = 0.001) had direct association with serum uric acid. After adjustment for additionally potential confounders subjects in the highest tertile of serum uric acid had 92 per cent higher chance of obesity compared with subjects in the lowest tertile (OR 1.92; 95 per cent CI 1.13, 3.23).

The present study has concluded that increase serum uric acid related to high risk of obesity and low mean of FBS and HbA1c.