Rejecting small! Accepting larger? Optimizing the font size of Chinese characters basing legibility and visual fatigue in OST-HMDs.

Font size is highly related to the legibility and visual fatigue in OST-HMDs, but the effects of font size on these factors remain further explored. An experiment was conducted to investigate the effects of a wider range of Chinese character font size (0.32°-1°) on legibility and visual fatigue, as well as to determine the optimal font size. Results showed that 0.32° had the worst legibility, but there was no continuous improvement as font size increased. A larger font size was found to be beneficial in reducing visual fatigue until it reached 0.95°, beyond which visual fatigue would relatively increase. Font size smaller than 0.32° should be rejected while a larger font size does not always provide more benefits. Considering legibility, visual fatigue and efficiency of text presentation, 0.84° is a relatively optimal Chinese character font size.

The emergence of Metaverse concept has driven significant advancements in OST-HMDs, while optimising the font size has become a fundamental concern in ensuring legibility and display effectiveness. Considering legibility and subjective visual fatigue, we conducted an experiment which demonstrated a moderate font size (0.84°) for Chinese characters is relatively optimal.

Effects of font size, stroke, and background on the legibility of Chinese characters in virtual reality for the elderly.

To investigate the legibility of Chinese characters' font size, text background opacity, and font stroke for the elderly in virtual reality, we recruited old and young participants to conduct experiments with VR and used eye-tracking technology to record the data of task completion time and error rate. After analysis, we concluded that the minimum recognition font size for the elderly is 30 dmm, and the best font size is 60 dmm, which is 20 and 40 dmm for young people. The font style has a significant effect on old people (p = 0.000*). Besides, for font sizes smaller than 20 dmm and bigger than 50 dmm, text with strokes and over 50% semi-transparent backgrounds can improve legibility for the elderly. With a suitable font size, the influence of font style on the elderly is not significant. These conclusions can provide a reference for the elderly-oriented Chinese font design in VR.

To investigate the legibility of Chinese characters' font size, text background opacity, and font stroke for the elderly in virtual reality. We recruited old and young participants to conduct experiments with VR and concluded the minimum recognition font size and the best font size for them.

Psychology Within and Without the State.

Psychological research in small-scale societies is crucial for what it stands to tell us about human psychological diversity. However, people in these communities, typically Indigenous communities in the global South, have been underrepresented and sometimes misrepresented in psychological research. Here I discuss the promises and pitfalls of psychological research in these communities, reviewing why they have been of interest to social scientists and how cross-cultural comparisons have been used to test psychological hypotheses. I consider factors that may be undertheorized in our research, such as political and economic marginalization, and how these might influence our data and conclusions. I argue that more just and accurate representation of people from small-scale communities around the world will provide us with a fuller picture of human psychological similarity and diversity, and it will help us to better understand how this diversity is shaped by historical and social processes.

Designing Combinations of Pictogram and Text Size for Icons: Effects of Text Size, Pictogram Size, and Familiarity on Older Adults' Visual Search Performance.

OBJECTIVE: This study aimed to determine suitable combinations of text and pictogram sizes for older adults and investigated the visual prioritization of pictogram versus text. BACKGROUND: Icons have become an indispensable part of application (app) design. Pictogram size and text size of icons influence the usability of apps, especially by aged users. However, few studies have investigated the influences of different pictogram and text size combinations on readability, legibility, and visual search performance for older adults. METHOD: This study used eye-tracking technology to investigate the effects of different pictogram and text size combinations as well as familiarity on readability, legibility, and visual search performance for older adults. A 3 (pictogram size) × 3 (text size) × 2 (familiarity) repeated-measures experimental design was used. RESULTS: The results of this study suggest that pictogram size and text size significantly affect visual search performance and that familiarity moderates the effect of text size on distribution of fixation duration proportion for text and pictograms. CONCLUSION: Large pictogram and text sizes improved the readability and legibility of icons for older adults. Furthermore, the older adults fixated the area of text prior to pictograms when the pictogram size was larger than 72 × 72 px (1.38° × 1.38°) in the visual search task. APPLICATION: The results of this study suggest using different combinations of pictogram and text sizes for older adults under different scenarios. The findings of this study act as practical support for designers and developers of mobile apps for older adults.

Legibility of 3D printed typography at smaller sizes.

The aim of the research was to investigate the usability and legibility of 3D printed typeface characters in smaller sizes. In the experimental investigation two software programs for letter modelling, three typefaces, three type sizes, two weight options, and two printing materials were tested. The samples were analysed visually and with image analysis. The legibility tests were conducted in laboratory conditions and testing chamber. The participants were asked to read pangrams and answer close-ended questions. The reading speed and understanding of the text were measured and analysed. It was found that the success of printing parts of letters, as well as their recognition and visual evaluation, is most often influenced by two analysed factors, i.e. weight option and type size, in all three typefaces. We established that the type size is statistically significant, and that the typographic tonal density is influenced by the typeface and the material used.Practitioner summary: The research presents the investigation of usability and legibility of 3D printed typefaces at smaller sizes. Five variables were analysed visually and with image analysis. Typographic tonal density, reading speed, and text comprehension were evaluated. The findings demonstrated that weight option, type size, and material influence the reading speed and text comprehension.HIGHLIGHTSFive different parameters were investigated regarding usability of 3D printed typeface.Legibility of different typefaces, weight options, and type sizes were tested.Typographic tonal density was evaluated with image analysis.Print quality of different materials using an FDM technology printer was evaluated.

Towards a standardisation of reading charts: Font effects on reading performance-Times New Roman with serifs versus the sans serif font Helvetica.

PURPOSE: The purpose was to compare systematically the legibility of a font without serifs (Helvetica) and one with serifs (Times New Roman). METHODS: Three paragraphs that were equal in the number of words, syllables, characters, difficulty and reading length were printed at equal size, with equal spacing between the lines and equal layout (paperback style), in either the sans serif typeface Helvetica Neue T1 55 Roman (Adobe) or the serif typeface Times New Roman PS Roman (Adobe). They were also printed in newspaper format in the serif font. The paragraphs were presented in random order (Latin square design) to 36 participants between 18 and 38 years of age (wearing their best-corrected visual acuity). Reading duration was measured with a stopwatch. Reading time, reading speed and the number of reading errors were compared. RESULTS: For the paperback layout, no significant difference in reading time (p = 0.50) or reading speed (p = 0.56) was found between the two fonts. The correlation between the two fonts was high for both reading time and speed (r = 0.93). The mean number of reading errors was the same (0.31 ± 0.58 errors/text) for both fonts. There was a significant difference in reading time and speed between the paperback and the newspaper layout. CONCLUSION: The legibility of Helvetica and Times New Roman is similar when investigated under equivalent conditions. Thus, these two font types can be used as interchangeable standard typefaces.

Upper Limb Kinematics of Handwriting among Children with and without Developmental Coordination Disorder.

Background: Children with developmental coordination disorder (DCD) often experience difficulties with handwriting legibility and speed. This study investigates the relationship between handwriting and upper limb kinematics to characterize movement patterns of children with DCD and typically developing (TD) children. Methods: 30 children with and without DCD matched for age, gender, and parent education were compared across handwriting abilities using a standardized handwriting assessment of both copied and dictated tasks (A-A Handwriting). The 3D motion capture system (Qualysis) was used to analyze upper limb kinematics and characterize movement patterns during handwriting and contrasted with written output. Results: Children with DCD wrote fewer legible letters in both copying and dictation. Children with DCD also showed poor automatization of key writing concepts. Atypical wrist postures were associated with reduced legibility for children with DCD (F (1,27) 4.71, p = 0.04, p-η2 = 0.15); whereas for TD children, better legibility was associated with greater variations in movement speed, particularly of the wrist (rho = −0.578, p < 0.05). Conclusion: Results reflect different movement parameters influencing handwriting in children with DCD. An improved understanding of the movement characteristics during handwriting of these children may assist intervention design.

The relationship between muscle activation and handwriting quality with non-native grip styles.

PURPOSE: This study aimed to explore the differences in muscle activity, handwriting legibility, and consistency when using the 4 primary handwriting grip styles: dynamic quadrupod (DQ), dynamic tripod, lateral quadrupod (LQ) and lateral tripod. STUDY DESIGN AND METHODS: Thirty-four 18-22-year-old participants completed a handwriting legibility test on paper as well as consistency and metrics tests using both surface electromyography and a digital writing tablet. Electromyography was used to measure the activity of 6 muscles associated with handwriting, and the tablet measured stroke duration, length, velocity, and pen pressure. Subjects used each grip style with all protocols and scores were normalized to their native grip. Significance was set at P < .05. RESULTS: Females had a lower range in legibility scores than males by 3.5% ± 1.7% (p = .046, d = 0.713), but grip style did not impact legibility. The upper trapezius (UT) was more active in the lateral tripod and LQ grips compared to DQ by 16.8% ± 5.2% and by 13.8% ± 5.2%, (p = .007, p = .012, respectively, partial η2 = 0.188). The stroke duration was greater in the LQ grip style than dynamic tripod and DQ grip styles (p = .008, p = .023, respectively; partial η2 = 0.123). CONCLUSIONS: Lateral grip styles involve more whole-arm, stabilizing movements while dynamic grip styles require fine dexterous movements. Furthermore, females are likely to be able to employ any grip with minimal effect on legibility. For a patient needing guidance in rehabilitation, understanding the differences in grips could aid selection of the optimum grip style to employ based on their muscular control deficits.

The influence of brightness combinations and background colour on legibility and subjective preference under negative polarity.

This study explores the influence of colour combinations on legibility and aesthetic feelings for the currently popular negative polarity interface design. Legibility was measured in two different ways in two tasks: time threshold (Task I) and a 9-point subjective rating (Task II). In Task I, we combined an adaptive program to measure 37 participants' recognition thresholds and online pseudo-word recognition tasks; in Task II, 44 participants' subjective preferences were measured using a scale. We found that higher brightness contrasts led to better legibility; different background colours with identical brightness and saturation did not cause significant differences; brighter texts produced better subjective preference for aesthetic appearance, legibility, and visual comfort; and different background colours had no significant effect on subjective preference. These findings have implications for digital interface design. Practitioner summary: In display design under negative polarity, experimental results show that higher brightness contrast leads to higher legibility, while background colour has no such significant effect; background brightness and hue have no significant effect on subjective preference, but text brightness and background colour have significant interaction effect on subjective preference. Abbreviations: OLED: organic light-emitting diode; LCD: liquid crystal display; ANOVA: analysis of variance; VDT: visual displsy terminal; CET-4: college english test band 4; ISO: International Organization for Standardization; HSB: hues saturation brightness.

Personalizing image enhancement for critical visual tasks: improved legibility of papyri using color processing and visual illusions.

This article develops theoretical, algorithmic, perceptual, and interaction aspects of script legibility enhancement in the visible light spectrum for the purpose of scholarly editing of papyri texts. Novel legibility enhancement algorithms based on color processing and visual illusions are compared to classic methods in a user experience experiment. (1) The proposed methods outperformed the comparison methods. (2) Users exhibited a broad behavioral spectrum, under the influence of factors such as personality and social conditioning, tasks and application domains, expertise level and image quality, and affordances of software, hardware, and interfaces. No single enhancement method satisfied all factor configurations. Therefore, it is suggested to offer users a broad choice of methods to facilitate personalization, contextualization, and complementarity. (3) A distinction is made between casual and critical vision on the basis of signal ambiguity and error consequences. The criteria of a paradigm for enhancing images for critical applications comprise: interpreting images skeptically; approaching enhancement as a system problem; considering all image structures as potential information; and making uncertainty and alternative interpretations explicit, both visually and numerically. Supplementary Information: The online version contains supplementary material available at 10.1007/s10032-021-00386-0.

Effects of occupational therapy on improvements in the handwriting ability of the adult non-dominant hand: An exploratory randomised controlled trial.

INTRODUCTION: Occupational therapy often involves handwriting acquisition practices that include the non-dominant hand when improvements in the dominant hand function are not possible because of trauma or stroke. This study explored whether character tracing and using a pegboard can effectively improve the handwriting of the non-dominant hand. METHODS: A randomised controlled trial involving 60 healthy university students aged ≥18 years was conducted. Participants were randomly assigned to the writing group, peg group or control group. The character recognition rate was evaluated by computer software. Furthermore, character quality and writing speed were evaluated by humans using global legibility scales. Evaluations were performed before the intervention (baseline) and on days 5 and 10 of the intervention. Using the non-dominant hand, the writing group traced characters on paper with a ballpoint pen, and the peg group used a pegboard for 15 min/day for 10 days. RESULTS: Compared with the peg and control groups, the writing group showed significant improvements in the character recognition rate and global legibility scale score. However, the global legibility scale score did not improve to the same level as that achieved with the dominant hand. None of the evaluation scores of the peg group showed significant improvements compared with those of the control group. There were no significant differences in improvements in the writing speed of the writing and peg groups compared with the control group. CONCLUSION: Tracing characters can improve the handwriting ability of the non-dominant hand, but using a pegboard may be less effective. Future research is needed to examine how much practice is necessary to improve the handwriting ability of the non-dominant hand sufficiently.

Handwriting in Children with Developmental Coordination Disorder: Is Legibility the Only Indicator of a Poor Performance?

Research on the use of speed, as an indicator of motor handwriting problems, is controversial and the legibility of the text is the measure mostly examined in children. This case-control study compared handwriting legibility and speed in 25 children with Developmental Coordination Disorder (DCD) and 75 typically developing peers matched by school grade (third and fourth grade). Children with DCD achieved significantly lower scores than their peers in both legibility and speed measures, overall and in the third and in the fourth grade independently. These measures represent a good insight into children's writing abilities and could be both used to screen and monitor.

Assessment of completeness and legibility of handwritten prescriptions in six community chain pharmacies of Asmara, Eritrea: a cross-sectional study.

BACKGROUND: Incompleteness and illegibility of prescriptions are prescription errors that account for a high proportion of medication errors that could potentially result in serious adverse effects. Thus, the objective of this study was to assess the completeness and legibility of prescriptions filled in the community chain pharmacies. METHODS: An analytical and cross-sectional study was conducted in the six government owned community chain pharmacies of Asmara, Eritrea from June 3rd to 10th, 2019 using a stratified random sampling technique. A total of 385 prescriptions were analyzed for completeness and legibility by three pharmacists (two experienced and one intern pharmacist). Descriptive statistics and multinomial logistic regression were employed using IBM SPSS® (Version 22). RESULTS: A total of 710 drugs were prescribed from the 385 prescriptions assessed. On average, a prescription was found to have 78.63% overall completeness. In the majority of the prescriptions, patient's information such as name, age, sex, and prescriber's identity were present. Prescribed drugs' information such as dose, frequency and quantity and/or duration were present in 83.7, 87.7, and 95.1% respectively. Moreover, generic names were used in 83.3% of the drugs prescribed. About half (54.3%) of the prescriptions' legibility were classified in grade four (clearly legible) and 30.6% in grade three (moderately legible). It was observed that legibility significantly increased with an increase in percentage completeness (rs = 0.14, p = 0.006). However, as the number of drugs written in brand name increased, legibility decreased (rs = - 0.193, p < 0.001). Similarly, as the number of drugs prescribed increased, legibility decreased (rs = - 0.226, p < 0.006). CONCLUSION: Majority of the handwritten prescriptions received in the community pharmacies of Asmara are complete and clearly legible.

[Analysis of documented informed consent forms for computed tomography : Completeness and data quality in four clinics]. / Analyse von dokumentierten Computertomographie-Aufklärungen : Vollständigkeit und Datenqualität in vier Kliniken.

BACKGROUND: Before performing a medical procedure, such as a computed tomography, an obligatory informed consent of the patient and its detailed documentation is necessary. METHODS: A total of 1424 informed consent forms for contrast-enhanced computed tomography from four clinics with different healthcare levels were analyzed. Informed consent forms were evaluated related to completeness, legibility and quality. RESULTS: In all, 1110 (77.9%) informed consent forms were sufficiently completed, 267 patients (18.8%) answered the form incompletely and 47 patients (3.3%) returned it without answering a question. Handwritten comments were found in 1391 (97.7%) cases. Thereof, 1329 (93.3%) were graded as detailed comments and 62 (4.4%) as less detailed comments. These comments were well legible in 675 (47.4%) cases, 558 (39.2%) informed consents showed limited legibility and in 158 (11.1%) more than 50% of the comments were unreadable. Signatures were complete in 1374 (96.5%) informed consent forms. CONCLUSION: The results show a better quality and documentation of informed consent forms for computed tomography obtained by radiology residents compared to radiological specialists. Compared to the radiologists, the non-radiologists performed significantly worse. The establishment of videos and use of digital informed consent forms could provide a possible solution.

Prescription legibility: bigger might actually be better.

INTRODUCTION: Drug errors are common and can be detrimental to patients, even resulting in death. Junior doctors write most prescriptions and are therefore responsible for most errors. There is little literature about the effect of legibility of the prescriber's handwriting on the rate of drug errors. Folklore would deem doctors' handwriting to be poorer than average; however, studies have shown this to be incorrect. In fact, handwriting in general has been shown to be poor. METHODS: A random sample of prescriptions from inpatient drug charts were chosen to provide a wide spread of legibility, with an even spread of the use of upper-case and lower-case lettering. Two cohorts of 13 junior doctors and 13 non-medical controls were recruited and asked to transcribe each of the prescriptions. Results were analysed for evidence of a statistical difference in correct transcription rate between lower-case or upper-case letters. RESULTS: Non-medical participants correctly transcribed only 45% of prescriptions written in lower case. This rose to 66.5% for those written in upper case. This showed strong statistical significance, p<0.005. A statistical difference was also shown for differences in transcription by junior doctors (92.3% vs 97.8%, p=0.016). CONCLUSION: Doctors must take responsibility for the quality of the prescriptions they write, to prevent avoidable drug errors. Legibility is improved by the use of capital letters. Therefore, we recommend that the use of upper cases should become routine practice when writing drug prescriptions.

Legibility of Text and Pictograms in Variable Message Signs: Can Single-Word Messages Outperform Pictograms?

OBJECTIVE: The current research shows the advantage of single-word messages in the particular case of variable message signs (VMSs) with a high aspect ratio. BACKGROUND: Early studies on traffic sign design proposed that pictorial information would advantage equivalent text messages in static signs. METHOD: We used a driving simulator to present individually 36 VMSs, showing six words (e.g., "congestion") and six danger signs (e.g., congestion traffic sign). In Experiment 1, 18 drivers read aloud the text or orally identified the pictograms as soon as they could correctly do it. In Experiment 2, a different sample of 18 drivers gave a motor response, according to the meaning of the message. We analyzed the legibility distance and accuracy, driving performance (speed variability), and glance behavior. RESULTS: Our results show that single-word messages were associated with better performance (farther reading distances) and required less visual demands (fewer glances and less glancing times) than pictograms. CONCLUSION: As typical configurations of VMSs usually have a high aspect ratio, and thus allow large character heights, single-word messages can outperform the legibility of pictograms. However, the final advantage of text or pictorial messages would depend on several factors, such as the driver's knowledge of the language and the pictogram set, the use of single or multiple words, the particular design and size of critical details in letters and pictograms, environmental factors, and driver age. APPLICATION: Potential applications include the design of VMSs and other devices aimed at displaying text and/or pictograms with a high aspect ratio.

The effect of fine motor skills on handwriting legibility in preschool age children.

[Purpose] The purpose of this study was to examine the effect that fine motor skills have on handwriting legibility in children of preschool age. [Subjects and Methods] The subjects of this study were 52 children of normal growth and development. In order to ascertain handwriting legibility, a Korean alphabet writing assessment was used; to measure fine motor skills, fine motor precision and manual dexterity, sub-items of BOT-2 were measured. Furthermore, in order to measure in-hand manipulation skills, a Functional Dexterity Test was conducted. [Results] The results of the study showed a high level of correlation between fine motor skills and handwriting legibility. The study revealed that the accuracy of hand and in-hand manipulation skills is factors that have an effect on handwriting legibility. [Conclusion] Through the current research, occupational therapists can provide activities that aid the development of fine motor precision and in-hand manipulation skills for children during the instruction and treatment of handwriting to preschool age children, which helps to conduct better legibility in their handwriting.

Reading the landscape: Legible environments and hominin dispersals.

Wayfinding, or the ability to plan and navigate a course over the landscape, is a subject of investigation in geography, neurophysiology, psychology, urban planning, and landscape design. With the prevalence of GPS-assisted navigation systems, or "wayfinders," computer scientists are also increasingly interested in understanding how people plan their movements and guide others. However, the importance of wayfinding as a process that regulates human mobility has only recently been incorporated into archeological research design. Hominin groups were able to disperse widely during the course of prehistory. The scope of these dispersals speaks to the innate navigation abilities of hominins. Their long-term success must have depended on an ability to communicate spatial information effectively. Here, we consider the extent to which some landscapes may have been more conducive to wayfinding than others. We also describe a tool we have created for quantifying landscape legibility (sensu Gollege), a complex and under-explored concept in archeology, with a view to investigating the impact of landscape structure on human wayfinding and thus, patterns of dispersal during prehistory. To this end, we have developed a method for quantifying legibility using a Geographic Information System (GIS) and apply it to a test case in prehistoric Iberia.

The legibility of food package information in France: an equal challenge for young and elderly consumers?

OBJECTIVE: The present study investigated whether food package information is legible in a real purchase context; more specifically, it examined the level of legibility of non-mandatory, mandatory and nutritional information as well as the influence of age on legibility. This is an important issue, especially for older consumers who are usually advised to pay attention to their diet. DESIGN: An in-store study was conducted in a French hypermarket. Descriptive statistics were used to measure the overall level of legibility and then ANOVA tests were carried out to examine the influence of age on the legibility of information. Complementary results included the influence of level of education. SETTING: Participants were asked to read information on four food packages when they were food shopping. SUBJECTS: The sample included 196 consumers aged 18-82 years. RESULTS: An asymmetry was observed between the extremely high level of legibility of non-mandatory information and the low level of legibility of mandatory and nutritional information provided on food packages. Elderly respondents performed significantly worse than their younger counterparts. An interaction effect was found between age and level of education on the legibility of mandatory information. CONCLUSIONS: Legibility of mandatory information is clearly unsatisfactory. There appears to be a hierarchy between significant, but non-mandatory, company information and important mandatory and nutritional information. The first type of information is promoted on food packages whereas the last two are all but concealed to older and less educated consumers.

The Effects of Letter Design Features and Aging on Legibility.

We examined how letter legibility is affected by letter design features (size, contrast, font-type, and complexity), and how this changes with age (by comparing younger [ N = 54] and older participants [ N = 54]). Types of letters in the study were Japanese characters, Latin alphabets, and digits. Participants verbally reported the letter presented on a Cathode Ray Tube (CRT) display in natural viewing conditions. The legible-contrast threshold was calculated as the contrast boundary of 50% correct answer. We found that letter complexity (i.e., number of strokes) did not affect legible contrast threshold, except for small (<0.35°) letters. Moreover, letter size even affected the threshold with a function similar but not identical to contrast sensitivity function. This supports the previous hypothesis proposed by Majaj et al. that optimal spatial frequency band exists for letter identification and shifts with its size. Another novel finding was the effect of aging on the legible-contrast threshold and how it related to other letter features. Constant aging effect on legible-contrast was found across letter sizes. Among older adults, the legible-contrast thresholds were 1.2 to 2 times those of younger adults. Moreover, the aging effects were greater for positive-contrast than for negative.