Iranian Journal of Ergonomics

Introduction: Lack of attention to the ergonomic measures and standards in making PowerPoint slides can result in visual fatigue, less attention to the content of the lecture and lower quality of training. This study aimed to identify the most popular Persian fonts and font sizes used by students in making PowerPoint slides and to investigate the students' subjective perception of the three features of legibility, formality and attractiveness of these fonts.

Materials and Methods: At first, five most widely used Persian fonts in providing PowerPoint slides were identified in 84 students from Tehran University of Welfare and Rehabilitation Sciences. Then, ten slides were prepared containing simple and familiar sentences based on the five popular fonts and two Different font sizes (24 and 28). Afterwards.40 college students evaluated the eligibility, formality and attractiveness of the fonts and font sizes used in each slide by a seven-item Likert scale. 

Results: One-way ANOVA Revealed significant differences between the students' subjective perception of legibility, formality and attractiveness of the fonts used in the slides. In terms of eligibility and attractiveness, slide 10 (B Titr, 28) was top rated and slide 4 (lotus, 24) was ranked as lowest by the participants. In terms of eligibility and attractiveness, slide 10 (B Titr, 28) was top rated and slide 4 (lotus, 24) was ranked as lowest by the participants.

Background Given the breadth and diversity of construction activities and their hazards, it is at the top of accident cause lists. According to the supervisor's role in safety and prevention of accidents at construction sites, this study was conducted to study the risk perception, safety attitude and safety performance in the supervisors of construction sites in Shiraz city. Methods This cross-sectional descriptive study was conducted on 200 supervisors who agreed to participate in the study. The study was by conducted using a structured questionnaire consist of questions regarding general information, risk perception, safety attitude and safety performance. The questionnaire was completed through self-statement. Results All studied supervisors had medium and high risk perception (35.5 and 64.5% respectively), medium and high safety attitude (78.6 and 21.4% respectively), medium and high safety performance (41.4 and 58.6% respectively). Among studied variables, size of construction site, had positive and significant effect on safety performance of supervisors. Conclusions The result of this study showed that there is a significant relationship between risk perception and safety attitude with safety performance among supervisors in construction sites. Somehow, by increasing safety attitude in supervisors, their safety performance were increased too.

Background and Aim: A good work environment is a place where one can feel relaxed and focused. In the field of environmental psychology, color is one of the environmental factors that greatly influence human perception and behavior. The purpose of this systematic review study was to investigate the effect of color on work environment.
Methods: This article is a systematic review study. Full-text and English-language articles published in PubMed, Scopus, Science Direct, Google Scholar were searched using the following keywords: Color perception, color ergonomics, color psychology, color effect, mental health and Workplace. The search was without time limit, and 45 eligible articles were reviewed.
Results: Initially, 262 articles were identified from different databases. Among them, 93 articles met the criteria for entering the study. After that, 48 articles were removed from the study due to lack of experimental studies and 45 articles were selected for final review. A total of 18 studies focused on color priority, 25 studies on mood and emotions, 6 studies on health outcomes, and 19 studies on the effect of workplace color on work-related outcomes. The results showed that color has a significant effect on emotions (eg mood), well-being (eg stress, comfort, well-being) and performance (eg productivity, creativity).
Conclusion: Workplace color should be considered as one of the main ways to promote the (mental and physical) health of individuals.