Dressing up social psychology: Empirically investigating the psychological functions of clothing using the example of symbolic protection.

Clothing behaviour remains an understudied research area within social psychology. Through the present research, we aim to anchor attire as an empirical research subject by investigating the psychological properties of one of its functionalities, namely, to provide protection. We argue that attire's undisputed role in shielding humans from environmental hazards may extend to the psychological level and protect them from the incorporeal consequences of existential threats symbolically. In this Registered Report, a mixed-methods approach links an ecologically valid field study of self-presentation in social media posts during Russia's war on Ukraine (Study 1; N = 248) with supraliminal priming of mortality salience in an online experiment (Study 2; N = 248). Across both studies, we expect that mortality concerns let people accentuate the physically protective attributes of clothing (e.g. more layers of clothing) and resort to more in-group prototypical dress styles (i.e. more gender-stereotypical). Findings show that people adjust their clothing preferences in response to existential threats, favouring in-group prototypical clothing (more gender-typical for both women and men in Study 1) and physically protective attire (higher in women and lower in men in Study 2) during high (vs. low) levels of existential threat. By positioning clothing as a research area within social psychology, our goal is to stimulate a wave of research on its profound role for humankind. Furthermore, we provide a dynamic and robust methodological approach to researching terror management theory.

Dialectic Between Ethics and Aesthetics in Lifestyle: Decision-Making Processes in Dressing among Muslim Women.

One expression of lifestyle is clothing. Clothing becomes a choice within a concept related to its usefulness as the body cover and related to an expression of dialogue between ethical and aesthetical considerations. Applying qualitative research with a philosophical approach, this study reveals three groups of women with their basic orientation in dressing. The first group argues that the model's suitability with users' needs or aesthetics is the primary consideration in clothing. The second group considers the ethics value as their first consideration in choosing a dress, while the third group brings together ethical and esthetical aspects as their consideration in dressing. Our finding also suggests that each group has a specific characteristic in their dressing appearance.

Amplifying perceptual demands: How changes in the colour vests affect youth players performance during medium-sided games.

This study explored how manipulating the colour of training vests affects footballers' individual and collective performance during a Gk+6vs6+Gk medium-sided game. A total of 21 under-17 years old players were involved in three experimental conditions in a random order for a total of four days: i) CONTROL, two teams using two different colour vests; ii) SAME, both teams wearing blue vests; iii) MIXED, all 6 players per team wore different colour vests. Players' positional data was used to compute time-motion and tactical-related variables, while video analysis was used to collect technical variables. Further, these variables were synchronized with spatiotemporal data allowing to capture ball-related actions in a horizontal 2D plan. All variables were analysed from the offensive and defensive perspective. From the offensive perspective, players performed more and further shots to goal during the CONTROL than in SAME and MIXED (small effects) conditions, with a decreased distance to the nearest defender (small effects). While defending, results revealed lower distance to the nearest teammate (small effects) in the CONTROL than in the SAME and MIXED conditions, and higher team longitudinal synchronization (small effects). In addition, the CONTROL showed in general lower values of team width while defending than in the other 2 conditions. Overall, coaches may use the CONTROL condition to emphasize offensive performance and defensive behaviour over the longitudinal direction with increased physical demands. In turn, coaches may use the manipulation of players vests to emphasize defensive performance, as players seem to behave more cohesively under such scenarios.

Public Perceptions of Physician Attire and Professionalism in the US.

Importance: In recent years, casual physician attire (fleece jackets and softshell jackets) has become increasingly popular, but to our knowledge, public perceptions of these garments have not been studied. Furthermore, gender biases may result in differing expectations and perceptions of female and male physicians and may be associated with patient rapport and trust building. Objective: To characterize public perceptions of casual physician attire and implicit gender biases in public assessment of physicians' professional attire. Design, Setting, and Participants: This survey study used a population-based survey administered via Amazon Mechanical Turk from May to June 2020 among individuals aged 18 years or older who were US residents and for whom English was the primary language. Intervention: Survey featuring photographs of a male or female model wearing various types of physician attire (white coat, business attire, and scrubs). Main Outcomes and Measures: Respondents' ratings of professionalism, experience, and friendliness of the male and female models in various attire and perceptions of the models' most likely health care profession. Preference scores for various outfits were calculated as the difference between the preference score for an outfit and the mean preference score for the outfit-role pairing. Results: Of 522 surveys completed, 487 were included for analysis; the mean (SD) age of respondents was 36.2 (12.4) years, 260 (53.4%) were female, and 372 (76.4%) were White individuals. Respondents perceived models of health care professionals wearing white coats vs those wearing fleece or softshell jackets as significantly more experienced (mean [SD] experience score: white coat, 4.9 [1.5]; fleece, 3.1 [1.5]; softshell, 3.1 [1.5]; P < .001) and professional (mean [SD] professionalism score: white coat, 4.9 [1.6]; fleece, 3.2 [1.5]; softshell, 3.3 [1.5]; P < .001). A white coat with scrubs attire was most preferred for surgeons (mean [SD] preference index: 1.3 [2.3]), whereas a white coat with business attire was preferred for family physicians and dermatologists (mean [SD] preference indexes, 1.6 [2.3] and 1.2 [2.3], respectively; P < .001). Regardless of outerwear, female models in business attire as inner wear were rated as less professional than male counterparts (mean [SD] professionalism score: male, 65.8 [25.4]; female, 56.2 [20.2]; P < .001). Both the male and the female model were identified by the greater number of respondents as a physician or surgeon; however, the female model vs the male model was mistaken by more respondents as a medical technician (39 [8.0] vs 16 [3.3%]; P < .005), physician assistant (56 [11.5%] vs 11 [2.3%]; P < .001), or nurse (161 [33.1%] vs 133 [27.3%]; P = .050). Conclusions and Relevance: In this survey study, survey respondents rated physicians wearing casual attire as less professional and experienced than those wearing a white coat. Gender biases were found in impressions of professionalism, with female physicians' roles being more frequently misidentified. Understanding disparate public perceptions of physician apparel may inform interventions to address professional role confusion and cumulative career disadvantages for women in medicine.

Behavioural mimicry as an indicator of affiliation.

Previous research has shown that behavioural mimicry fosters affiliation, and can be used to infer whether people belong to the same social unit. However, we still know very little about the generalizability of these findings and the individual factors involved. The present study intends to disentangle two important variables and assess their importance for affiliation: the matching in time of the behaviours versus their matching in form. In order to address this issue, we presented participants with short videos in which two actors displayed a set of small movements (e.g. crossing their legs, folding their arms, tapping their fingers) arranged to be either contingent in time or in form. A dark filter was used to eliminate ostensive group marks, such us phenotype or clothing. Participants attributed the highest degree of affiliation to the actors when their subsequent movements matched in form, but were delayed by 4-5 seconds, and the lowest degree when the timing of their movements matched, but they differed in form. To assess the generalizability of our findings, we took our study outside the usual Western context and tested a matching sample of participants from a traditional small-scale society in Kenya. In all, our results suggest that movements are used to judge the degree of affiliation between two individuals in both large- and small-scale societies. While moving in different ways at the same time seems to increase the perceived distance between two individuals, movements which match in form seem to invoke closeness.

Sweating the connection of uniform colours and success in sport: No evidence for the red win effect in elite women's NCAA basketball.

Efforts to research the link between uniform colours and performance in sport have gained momentum in recent years demonstrating a red superiority effect. The current investigation identified a gender gap in participation between laboratory experimental studies of performance, which are dominated by women participants, and archival game analysis research, which is almost exclusively conducted in elite men's sports. To address this disparity, we conducted the first dedicated exploration of uniform colours with women's American collegiate basketball teams during the national annual tournament (NCAA) in a period spanning eight seasons (2012-19). In contrast to the evidence from experimental research, we failed to detect an effect and the results remained null when several colours were tested and ranking was considered. Based on the findings, we conclude with mounting confidence that uniform colours do not exert influence over winning in relatively long-duration, low aggression team sports with substantial physical contact. We discuss the results in relationship to the colour-in-context theory (Elliot, A. J., & Maier, M. A. (2012). Colour-in-context theory. In Advances in experimental social psychology (Vol. 45, pp. 61-125). Academic Press.) and highlight its shortcomings pertaining to sex as a moderator.

Investigating Patient Preferences in Medical Student Attire in the Outpatient Otolaryngology Setting.

BACKGROUND: The authors sought to investigate patient preferences on physician and medical student attire in the outpatient otolaryngology setting. METHODS: A prospective sample of 50 (23 males, 27 females) patients presenting to an otolaryngology clinic in a North American teaching hospital, Boston, MA, were included. Patients were seen by a researcher wearing a white coat and either (1) a shirt and tie or (2) surgical scrubs, then completed a Likert-style survey evaluating feelings of trust, comfort, and professionalism. Statistical significance was set at α = 0.05. RESULTS: Most patients (82%, 41/50) believed that attire was important. Men and older patients were significantly more likely to believe attire was important (P = .01 and .005, respectively). Patients were significantly more comfortable when seen by a provider wearing a shirt and tie compared to scrubs (U = 109.5, P = .021); however, there was no difference in feelings of trust or professionalism (P = .5* and .6*, respectively). CONCLUSIONS: Physician attire is important for patients presenting to otolaryngology clinic. Patients favored a white coat with a shirt and tie. Level of Evidence: NA.

A survey of Japanese physician preference for attire: what to wear and why.

Many studies have examined the impression made on patients by physicians' attire. Regardless of practice location, many patients express most confidence in physicians who wear white coats. The number of physicians in Japan who choose not to wear white coats in practice has been increasing, particularly in primary care settings. However, very few studies have examined physician preference for attire. To clarify Japanese general practitioners' preference for attire by practice setting, we conducted a survey of physician preferences and reasons for attire selection. Subjects were 794 general practitioners certified by the Japan Primary Care Association and recruited from a mailing list. We conducted a web-based questionnaire survey. Physicians were asked to choose one of four different dress styles (semi-formal, white coat, scrubs, and casual) for different practice settings and state the reasons for selection. The response rate was 19.3% (n = 153; men 112). Most subjects chose white coats as usual attire for hospital practice (52%), mainly because of custom and professionalism. In contrast, most subjects chose non-white coats for clinics (59%) and home care (hospital-provided, 58%; clinic-provided, 71%). More subjects chose casual dress for clinic and home care practice, mainly to appear empathic. Most subjects chose white coats as the most appropriate hospital attire (54%), mainly because of patient perceptions of this attire being professional. Most subjects considered non-white coat attire more appropriate for clinic and home care practice. The findings indicate that general practitioners choose their clothes depending on practice location.

Effect of attire on client perceptions of veterinarians.

This study examined the effect that veterinarian attire and gender had on clients' perceptions of veterinarians in a large academic specialty hospital. Clients volunteered to answer a survey in the small animal waiting area over a 3-month period. The survey consisted of demographic information, information about the nature of their appointment with their pet, and questions regarding clients' levels of comfort with and the perceived trustworthiness of a Caucasian male and Caucasian female model in four different types of attire: surgical scrubs, surgical scrubs with white lab coat, business casual, and business casual with white lab coat. Relevant effects of interest were estimated using linear mixed models. Five hundred and five clients participated in the survey, yielding a total of 6217 completed survey questions. Clients perceived veterinarians wearing white lab coats as more competent and reported more comfort with those veterinarians (P < 0.0001). When comparing surgical scrubs with no white lab coat to business attire with no white lab coat, surgical scrubs resulted in higher perceived competence and comfort levels (P < 0.0001). Wearing a white lab coat over both surgical scrubs and business casual increased clients' perceived competency and comfort levels compared to not wearing a white lab coat.

The psychology of sustainable consumption.

This paper investigates the psychological factors that impact sustainable consumption, an area where commerce meets individual behaviors. With a growing trend of sustainability initiatives, the fast fashion industry has been targeted by consumers and firms alike due to the immense damage it causes to the environment throughout its life cycle. While there has been an increased awareness regarding its negative externalities, the consumer-driven industry nevertheless continues to flourish as people have started treating garments as almost a disposable good resulting in firms generating new fashion lines quicker than ever before. In order to combat this issue, one may analyze the psychological process behind sustainable purchasing behavior and apply the findings to marketing communications to increase sustainable purchases. The discussion on the theory of planned behavior, temporal discounting, the role of corporate social responsibility and the trade-off between product attributes illuminate a number of factors ranging from an individual's moral beliefs to the nature of social influence as well as the impact of identity deficits. These findings from psychology are then synthesized and applied to the segmentation, targeting, positioning framework from marketing to offer recommendations for firms selling sustainable apparel. Further studies may investigate how demographic variables such as age or culture may be incorporated into the psychological models intended to understand and influence these recommendations.

What Should I Wear to Clinic? A National Survey of Pediatric Orthopaedic Patients and Parents.

BACKGROUND: A number of factors have been shown to affect how surgeons are subjectively viewed, including their appearance in clinic. Patient preference for pediatric orthopaedic surgeon attire has not previously been studied, nor has its influence on initial perception of the surgeon. METHODS: At 5 pediatric regional sites across the United States, parents and patients presenting to the pediatric orthopaedic clinic were given anonymous surveys showing 8 photos of surgeons in different clinical dress including in business or scrub dress, each with or without white coat (WC). Subjects reported their demographics, single preferred photo, rated characteristics of the surgeons in each photo on a 5-point Likert scale, and answered specific questions on scrubs and WCs. The first consecutively completed 100 parent and 100 patient surveys were included from each site. RESULTS: One thousand surveys were collected from patients (500) and parents (500). The majority felt a surgeon's clinical dress would not affect how they are cared for (83%), and that it was ok to wear scrubs in clinic (90%). Overall, WC was preferred to those without no matter the age, but there was no difference between scrub and business choices. Of those stating a preference, woman in business and WC (24%) and woman in scrubs and WC (21%) were most selected, with the only geographic difference being the midwest's preference for man in business and WC. Females were more likely to prefer women photographs (P<0.0001). CONCLUSIONS: In general, pediatric orthopaedic patients and parents do not have a strong specific preference toward what their surgeon wears to clinic, including whether or not we are dressed in scrubs, but some initial biases exist. When asked to choose, the traditional WC worn over any attire is preferred, and female patients and parents uncover a preference for a surgeon of their own sex. LEVEL OF EVIDENCE: Level III.

Survey of lipoedema symptoms and experience with compression garments.

Lipoedema is an incurable chronic disease causing limb deformity, painful skin and excessive ecchymosis. Compression garments are frequently recommended to manage symptoms, but the existing products are not designed specifically for lipoedema, and are for other medical conditions. A structured questionnaire was prepared in Online Surveys in October 2018 to investigate lipoedema symptoms and the use of compression garments to manage them. Some 279 people with lipoedema completed the survey; 70% wore compression garments in all four compression classes, of which class 2 was most common (58% of wearers). The top three reasons for wearing compression garments were to feel supported (73%), reduce lipoedema pain (67%) and improve mobility (54%). Most people with lipoedema who wore compression garments found compression helpful in managing their symptoms, but overall satisfaction was low. Problems with existing compression garments were so severe in some cases that the garments were not worn at all or used less often. The information collected in this survey might be useful for the design and development of compression garments specifically for lipoedema.

Undergarment needs after breast cancer surgery: a key survivorship consideration.

An important aspect of breast cancer survivorship is finding comfortable undergarments that work for women's post-treatment bodies. Patients who undergo mastectomy, including both those who do and do not receive reconstruction, need bras that can accommodate new breast shape, size, and feel, as well as scarring and skin sensitivity. Our research with breast cancer patients and the literature reveal that ready-to-wear bras are inadequate for the variety of patients' needs, and many women lack support and guidance to make decisions about undergarments after cancer. This commentary describes a major quality-of-life challenge for breast cancer survivors and makes recommendations for future research. Healthcare providers need more guidance and resources to be able to help their patients prepare for this aspect of survivorship. New technologies, such as biomechanical modeling, 3D body scanning, and manufacturing techniques, should be pursued in collaboration with patients, healthcare providers, and clothing designers to ease this burden for breast cancer patients.

Women's use of intimate apparel as subtle sexual signals in committed, heterosexual relationships.

Current literature on women's sexual signaling focuses on modes of attracting potential, new sexual partners, but says little about women's subtle sexual signals in committed, romantic relationships. Subtle sexual signals are inherently private and are only visible to the intended audience; a woman might use these signals to elicit or accept a sexual response from her partner or to increase her overall attractiveness, or attractivity. In this study, we sought to identify women's use of intimate apparel as a proceptive or receptive behavior as well as the effects of relative mate value, relationship commitment, relationship satisfaction, and sexual functioning. A total of N = 353 women in the United States aged 25-45 who were in committed, heterosexual relationships completed the survey; 88.7% of the sample indicated wearing or having worn sexy underwear. Results indicate that women report wearing sexier underwear the day taking the survey if they anticipate sexual activity that same day. However, during the most recent sexual activity, women did not report wearing sexier underwear if they initiated (proceptive) that activity. While relative mate value was not directly related to sexiness of intimate apparel, women who report higher mate value tend to wear sexier underwear. Women's use of intimate apparel might be viewed as a method of increasing attractivity and underlying receptivity to aid relationship maintenance, though caveats regarding measures and alternative interpretations are also discussed. Findings suggest that these women use intimate apparel to feel sexy, desired, aroused, and to prepare for sex with their partners. This study is the first to examine intimate apparel in relationships and as a subtle sexual signal of proceptivity and receptivity.

The role of clothing on participation of persons with a physical disability: A scoping review.

Determining ways to facilitate participation of persons with a physical disability is crucial and clothing may play a central role. This review aims to synthesize and examine the role of clothing on participation of persons with a physical disability. Six research databases and grey literature were searched following Arksey & O'Malley's six steps, including multiple expert consultations. English and French articles contributing to how clothing affects participation were included and tabulated based on the International Classification of Functioning, Disability and Health. Fifty-seven articles and 88 websites were included. A variety of stakeholder perspectives, diagnoses, and types of clothing were represented. Clothing mostly influences mobility and self-care, as well as various personal factors. Forty-nine percent of articles reported essential clothing design features to consider. Clothing is an important and complex environmental factor that interacts with all health domains, including participation. Future research should consider intersectoral initiatives.

The impact of street clothes among caregivers on residents with dementia in special care units: The STRECLO study.

AIMS AND OBJECTIVES: To examine the impact of caregivers' street clothes on people living in special care units (SCUs). We hypothesised that caregivers wearing street clothes would improve residents' relationships with other residents and caregivers and, as a consequence, would improve their quality of life. BACKGROUND: Environmental factors have been recognised as important elements in the care of people with dementia. Among these factors, the importance of the caregivers' appearance and more particularly their street clothes has been raised. DESIGN: The Street Clothes study (STRECLO) was designed as a multicentre crossover observational study. METHOD: This study was conducted in two volunteer nursing homes. It involved videotaping residents (N = 24) over a 6-month period: caregivers wore uniform and then street clothes for two consecutive three-month periods. Three outcome measures were observed as follows: (a) behaviours of residents, (b) contents of conversations and (c) proximal interactions between residents and caregivers. The STROBE checklist was used to ensure quality reporting during this observational study. RESULTS: When caregivers wore street clothes, we observed the following: (a) greater solicitation and less anxiety in residents, (b) content of conversations between residents and caregivers included more personal and less health information, and (c) more proximal interaction between caregivers and residents. CONCLUSION: To our knowledge, this is the first study which investigated the long-term effects on residents of SCU caregivers wearing street clothes. Our study demonstrated the potential benefit of not wearing uniform on the quality of life of institutionalised people with dementia. RELEVANCE TO CLINICAL PRACTICE: Given the budgetary constraints faced by nursing homes, wearing street clothes for caregivers could be readily applied to clinical practice and represents a promising way to increase the quality of life of dementia residents and their families.

Confrontation Process of Students with Hijab.

Hijab as an Islamic value and divine duty is emphasized, and it is necessary in university settings. The misveiling is a social phenomenon, and its social, political and cultural aspects must be studied for understanding its factors and causes. The aim of this study was to understand how the process of confronting students with hijab. A grounded theory design was used. The data were collected by semi-structured interviews from sixteen students who left their veiling, eleven students with veiling, three advisors, two Vice in Student and Cultural Affairs and three family members of students who left their veiling. The participants were selected through conventional and theoretical sampling method, and the data were analyzed simultaneously by continuous comparisons based on Strauss and Corbin (Basics of qualitative research: procedures and techniques for developing grounded theory, Sage, Thousand Oaks, CA, 1998) method. Sociocultural paradox of hijab was appeared as the main (core) variable affecting the process of confronting students with hijab. The main variable in this study includes six axial codes: sociocultural paradox, transformation of values, values selection, adherence to spiritual, doubt in beliefs and normative conflict. The process of acceptance/rejection of the hijab occurs because of sociocultural paradox after the transformation of values. In the meantime, person thinks about strategy. The person's strategy to accept/leave the hijab is based on her beliefs. By adherence to spiritual, veiling can be strengthened and weakened by doubts in beliefs. In order to promote hijab, it is necessary to pay attention to its underlying conditions and causes. Individual beliefs and values must be strengthened for promoting hijab.

Athleisure: A qualitative investigation of a multi-billion-dollar clothing trend.

Clothes play a ubiquitous, yet under-appreciated social role. In the context of body image, clothes may both reflect and facilitate wearers' ideals and anxieties about their physical appearance. Athleisure, referring to athletic-inspired workout apparel that explicitly accentuates wearers' physiques, is a hitherto unexamined clothing trend worth tens of billions of dollars annually (and growing) in the United States consumer market alone. We conducted the first qualitative examination of athleisure by interviewing 20 women who regularly wore athleisure. Four master themes emerged from the data: (1) the athleisure lifestyle, (2) the conditional nature of athleisure, (3) athleisure embodiment, and (4) athleisure-linked cognitive dissonance. Our results suggest that wearing athleisure communicates to others an adherence to the lifestyles depicted in fitspiration - a class of social media imagery that glorifies thin-fit bodies. Participants articulated that athleisure encouraged them to feel more confident and athletic; athleisure also emphasized the women's physiques, and whether they aligned with the thin-fit ideal. Thus, the act of wearing athleisure motivated participants to engage in fitspiration-based activities. Given the (a) massive public demand for athleisure, and (b) industry projections for continued growth in athleisure spending, our findings compel additional research on the connections between clothing and body image.

Similarity in transgender and cisgender children's gender development.

Gender is one of the central categories organizing children's social world. Clear patterns of gender development have been well-documented among cisgender children (i.e., children who identify as a gender that is typically associated with their sex assigned at birth). We present a comprehensive study of gender development (e.g., gender identity and gender expression) in a cohort of 3- to 12-y-old transgender children (n = 317) who, in early childhood, are identifying and living as a gender different from their assigned sex. Four primary findings emerged. First, transgender children strongly identify as members of their current gender group and show gender-typed preferences and behaviors that are strongly associated with their current gender, not the gender typically associated with their sex assigned at birth. Second, transgender children's gender identity (i.e., the gender they feel they are) and gender-typed preferences generally did not differ from 2 comparison groups: cisgender siblings (n = 189) and cisgender controls (n = 316). Third, transgender and cisgender children's patterns of gender development showed coherence across measures. Finally, we observed minimal or no differences in gender identity or preferences as a function of how long transgender children had lived as their current gender. Our findings suggest that early sex assignment and parental rearing based on that sex assignment do not always define how a child identifies or expresses gender later.

Envelhecimento e aparência: percepções de uma mulher transexual heterossexual / Aging and appearance: perceptions of a heterosexual transgender woman / Envejecimiento y apariencia: percepciones de una mujer transgénero heterosexual

A autonomia na construção da aparência e seus significados têm estado presentes na edificação das identidades e condições sociais ao longo do curso da vida, promovendo o bem-estar. Nem sempre essa dinâmica psicossocial acontece tem acontecido de forma simples e democrática. Estudo de caso qualitativo sobre a trajetória da construção da aparência de uma mulher transexual heterossexual. Uso do método etnográfico. Obteve-se que a aparência se trata de variável complexa, reunindo uma constelação de variáveis para além do próprio sexo ou gênero.

Autonomy in the construction of the appearance and its meanings have been presented in the edification of identities and social conditions throughout life course, promoting well-being. This psychosocial dynamic has not always happened in a simple and democratic way. Qualitative case study on the path of appearance construction of a heterosexual transgender Brazilian woman. Use of an ethnographic method. It was found that appearance is a complex variable, bringing together a constellation of several variables beyond gender or sex itself.

La autonomía en la construcción de la apariencia y sus significados han estado presentes en la construcción de identidades y condiciones sociales a lo largo de la vida, promoviendo bienestar. Esa dinámica psicosocial ni siempre ocurre de manera simple y democrática. Estudio de caso cualitativo acerca de la trayectoria de la construcción de la apariencia de una transgénero heterosexual. Se utilizó de método etnográfico. Se observó que la apariencia es una variable compleja que abarca una constelación de distintas variables más allá del género y sexo.