A Systematic Underpinning and Framing of the Servicescape: Reflections on Future Challenges in Healthcare Services

Ever since Bitner defined the term “servicescape” as the physical environment in which the service is assembled, several scholars have attempted to better understand the impact of the built environment in the context of different service settings. While servicescape is a topic of increasing academic interest among scholars and practitioners, most studies in the area are dedicated to understanding the built environment of hedonic service. More studies are needed to examine utilitarian servicescape and in this paper, we have focused on the healthcare environment. This study aims to identify the gap in servicescape and healthscape studies by providing a theoretical structure of the current servicescape literature and comprehend the academic differences between hedonic servicescape and utilitarian healthscape studies. After reviewing 44 selected papers based on rigorous criteria, we: (1) framed the servicescape factors; (2) analyzed the servicescape literature from the perspectives of terminologies, research fields, methodologies, and frameworks; and (3) identified the current paths of healthscape research. Through this work, we highlight the significance of adopting different dimensions and factors to evaluate the distinguished service environment by the servicescape type and propose several research agendas for future studies on healthscapes. The research findings can contribute to a deep understanding of healthscapes and can introduce a new viewpoint for interpreting the servicescape in diversified service settings.


Introduction
The services industry contains intangibility, inseparability, and heterogeneity [1], making it extremely difficult to measure service quality. People depend on more tangible clues. In other words, the space where the service is produced cannot be hidden and may have a strong effect on customers' perceptions of the service experience [2][3][4][5][6][7][8][9][10][11]. Following this point, Bitner defined the term "servicescape" as the physical environment in which the service is assembled [2]. The scholar attempted to explain three servicescape dimensions (ambient conditions, spatial layout and functionality, and signs/symbols and artifacts) and their interactions with customers and service providers. Other scholars adapted this theoretical framework to different service settings, for instance, leisure services [3,4], restaurants [12][13][14], hotels [5], museums [7], and airports [15].
Healthcare service providers also have realized the significance of the physical environment to enhance their service quality. Hutton et al. suggested the term "healthscape" as the servicescape of healthcare services and explained how the healthscape affects a patient's perception, attitude, satisfaction, and behavioral intention [16][17][18][19][20].
As the types of servicescapes have diversified from retail services to healthcare services, aggregating the results of relevant research in the field and providing an overview of the current status of servicescape studies would contribute significantly to the literature. Literature reviews related to servicescapes have been conducted by several researchers. Turley and Milliman focused on constructing a comprehensive table of the empirical studies regarding the effects of physical environments in commercial service contexts [21]. They identified atmospheric variables and suggested a framework of the servicescape for the retail service environment. Lin attempted to review the literature relating to the impact of the servicescape on customer behavior, based on the concept of Gestalt psychology [6]. The author proposed a framework for a customer's evaluation process for a servicescape and explained each step by analyzing the existing literature. Another study by Aubert-Gamet et al. noted that the impact of a servicescape was still very uncertain and researchers should consider the emergence of a new social condition with paramount consequences on consumer behavior [22]. Moreover, Mari et al. insisted that we still lack an up-to-date systematization of both theoretical and empirical findings on how servicescapes affect customer behavior [23].
Although scholars have attempted to explain the transition of servicescape studies in their studies, several have insisted that research on servicescapes has some limitations, such as: (1) servicescapes of diverse service settings cannot be generalized since several initial studies focused only on the hedonic service and (2) some of the dimensions (factors) of servicescapes do not reflect emerging social changes because of intangible spaces, such as cyberspace [13,16,[24][25][26][27]. From this perspective, classifying the results of servicescape studies between hedonic and utilitarian domains would be significant to explain the characteristic properties of the service environment.
The principal objective of this paper is to: (1) provide an overview of the current status of servicescape research with diverse viewpoints; (2) identify the differences between hedonic servicescape and utilitarian healthscape studies by classification; and (3) illustrate the academic challenges of healthscape research. The results of this study could support the understanding of overall theoretical boundaries on servicescape and create opportunities for further healthscape studies.
The remainder of this paper is organized as follows: Section 2 addresses the theoretical background of the servicescape and healthscape. Section 3 focuses on the research methodology, Section 4 provides research findings, and Section 5 presents the discussion and implications. Finally, Section 6 presents the conclusions of the study.

Servicescape
Studies on the physical environment of service organizations are based on the research of Kotler and Baker [28,29]. Kotler defined "atmospherics" as the physical and controllable environmental components affecting the buyer's purchasing probability [28]. He argued that the atmosphere could affect purchase behavior since it may directly arouse visceral reaction that favorably contributed to purchase probability. Baker also highlighted the role of the environment in marketing services and how the physical environment influences customer perceptions of service [29]. Drawing from these two perspectives, Bitner suggested the term "servicescape," referring to "the physical surroundings that impact on the behaviors of customers and employees in service organizations" [2]. She identified that both customers and employees perceive their service environment through a variety of objective environmental factors and both groups may respond cognitively, emotionally, and physiologically to the environment. Those internal responses to the environment influence the behavior of individual customers and employees in the servicescape and affect social interactions between and among customers and employees. She identified three environmental dimensions: (a) ambient conditions; (b) spatial layout and functionality; and (c) signs, symbols, and artifacts. Ambient conditions refer to the characteristics of the environment that can stimulate the five senses of customers (temperature, lighting, noise, music, and scent). Spatial layout refers to the size, shape, and arrangement of machinery,

Servicescapes in the Healthcare Industry: Healthscapes
The healthcare service industry could be distinguished from other retail service sectors, as it is difficult for patients to estimate and judge the service they are provided. It also needs professional knowledge of medical information and experience [16,20,31]. As a result, tangible clues, such as the physical environment, etc. play a major role in evaluating the entire healthcare service.
Originating from the domain of the servicescape, Hutton et al. pointed out that despite the paramount and permanent importance of the physical facility [16], little research has been accomplished involving the marketing role that the healthcare facility and physical environments play [16,20,31]. They proposed the term "healthscape" and identified components of atmospherics and servicescapes concerning healthcare to assess their strengths and predictive abilities in the relationships between patient satisfaction and quality assessment, intention to return, and willingness to recommend a healthcare provider to others and to propose much needed research in the area. Healthscape can be defined as the emotional, affective, cognitive, and physiological influence on the patient-customer and staff-provider behaviors and outcomes caused by elements of the physical healthcare environment, including the facility and tangible elements of the service encounter.
The concept of healthscape motivated researchers to face the academic challenges in investigating the effect of the healthscape on patients. For instance, Lee explored the conceptual framework of healthcare facilities from a service design perspective based on Bitner's study [18]. She discovered that healthscape factors could be placed into one of two categories: ambient conditions and serviceability. These factors are related to the satisfaction of patients, perceived quality of care, and approach behavior. Another study conducted by Rosenbaum et al. identified that perception of the healthscape could create restorative effects on patients in cancer resource centers [19]. They proposed a theoretical understanding of how physical factors have an impact on patients to relieve their stress. Sahoo et al. identified six healthscape factors that led to patients' satisfaction in Indian private healthcare facilities through an empirical study [20]: (1) service personnel conduct and cleanliness; (2) service delivery; (3) ambience and facilities; (4) location and look; (5) appealing decoration; and (6) upgraded safety service. This result implied that dimensions of the healthscape should be considered separately from those of the general commercial service sector.

Method
This study has conducted a systematic literature review based on the guidelines of the PRISMA process [32,33]. No meta-analyses were conducted, due to the diversity of service typologies. The steps in the systematic literature review method are provided below.

Research Perspectives
We conducted a systematic literature review of servicescape studies to identify research trends since Bitner's findings. The research perspectives addressed in this study are: What are the key terminologies used to explain the servicescape and what academic field journals mainly deal with servicescape studies?
Which research method is used to evaluate the servicescape? What variables are used to explain the framework of the servicescape? What are the evaluation factors of the servicescape and are there any differences according to the service setting?
Based on these criteria, we examined the current status of healthscape studies with contextual points of view using descriptive statistics.

Databases Searched
The electronic databases searched in this review included original qualitative and quantitative papers published in Science Direct, Scopus, and Web of Science. The journals were selected, as they were known to include either empirical studies or literature reviews in the area of physical science and social science.

Keywords Searched
The search terms that we used were not only "servicescape" but also some terms that are indicative of the physical environment of service settings. They were "service setting," "service environment," "atmosphere," "physical surroundings," "physical evidence," "physical environment," "spatial design," and "built environment." All research papers that included the above words in keywords, titles, and abstracts were considered.

Selection of Research Papers for Inclusion in the Review
A number of further selection criteria were specified to include appropriate studies in the review. To be included in the review, papers were required to meet all of the following inclusion criteria: (a) peer-reviewed articles/journals; (b) accessed via electronic search; and (c) written in English. According to these three conditions, 940 research papers met the inclusion criteria and were identified as relevant to the current review.
Three researchers screened each publication and excluded irrelevant journals based on titles (n = 372), abstracts (n = 211), and duplicates (n = 199). In this process, journals that mainly studied invisible spaces (i.e., cyberscapes, virtualscapes, online environments, musicscapes, and soundscapes) and social interactions between customers and servicescapes (i.e., socialscapes) were excluded. Whether social interaction would belong to the boundary of servicescape research is a controversial issue among scholars. In this paper, we included servicescape studies which mainly discussed physical environments or tangible elements. Furthermore, we performed a secondary investigation to include additional journals obtained from manual searches of reference lists and publications (n = 21) and excluded irrelevant studies based on the full text with the following exclusion criteria (n = 155): (a): drawn insights on servicescape is trivial or general since these papers do not discuss the physical service environment as a major construct to satisfy customers; (b) those studies that interpreted and analyzed the concepts of servicescape regardless of Bitner's findings [2] and do not take an approach to tangible settings. Finally in total, we could extract 44 studies as shown in Figure 1

Classification of the Servicescape Typology
Bitner suggested a typology of organizations based on variations in form and usage of the servicescape [2]. It is classified by stakeholder (self-service, interpersonal service, and remote service) and physical complexity (elaborate and lean). Although many studies after Bitner have been conducted, most of them are positioned in one category: elaborate-interpersonal service. As we tried to classify the literature concerning servicescapes and compare articles in the area, further classification criteria were needed. Lee et al. defined four types of servicescapes based on touch points for different service settings as follows [34]: Type 01: intangible and hedonic (e.g., hotel, resort, and airline) Type 02: tangible and hedonic (e.g., cinema, restaurant, and department store) Type 03: intangible and utilitarian (e.g., hospital) Type 04: tangible and utilitarian (e.g., discount department and gas station) In this study, we categorized the servicescape typology used in all existing literature by the subject of the journal or data samples. To categorize studies that dealt with a general service setting, we created a group called "overall service setting."

Classification of Article Types
In this study, we categorized article types as follows: TC: theoretical and conceptual papers MP: modeling papers LR: literature reviews DF: dimension/factor analysis

Classification of the Servicescape Typology
Bitner suggested a typology of organizations based on variations in form and usage of the servicescape [2]. It is classified by stakeholder (self-service, interpersonal service, and remote service) and physical complexity (elaborate and lean). Although many studies after Bitner have been conducted, most of them are positioned in one category: elaborate-interpersonal service. As we tried to classify the literature concerning servicescapes and compare articles in the area, further classification criteria were needed. Lee et al. defined four types of servicescapes based on touch points for different service settings as follows [34]: Type 01: intangible and hedonic (e.g., hotel, resort, and airline) Type 02: tangible and hedonic (e.g., cinema, restaurant, and department store) Type 03: intangible and utilitarian (e.g., hospital) Type 04: tangible and utilitarian (e.g., discount department and gas station) In this study, we categorized the servicescape typology used in all existing literature by the subject of the journal or data samples. To categorize studies that dealt with a general service setting, we created a group called "overall service setting."

Classification of Article Types
In this study, we categorized article types as follows: TC: theoretical and conceptual papers MP: modeling papers LR: literature reviews DF: dimension/factor analysis

Classification of Servicescape Factors
Developing dimensions by service setting is one of the fundamental requirements to study the servicescape. Turley et al. stated five atmospheric variables as follows [21]: (a) external variables; (b) general interior variables; (c) layout and design variables; (d) point-of-purchase and decoration variables; and (e) human variables. We developed other criteria since the dimensions of Turley et al. are focused only on the retail environment [21]. Although several scholars have attempted to suggest their own category of dimensions, some of them are duplicated or are not considered, as they have not been reviewed against the respective attributes or items.
We conducted affinity analysis of the groupings of servicescape factors using the bottom-up method. After taking all attributes from the 44 studies, relative items were arranged in similar categories. Three researchers conducted this work simultaneously and compared their results with each other. To assess the inter-rater reliability with respect to the quality classifying factors, a sub-sample was coded independently by researchers. The inter-rater reliability for the total results was 0.91, showing a good agreement among the three coders on the quality of the papers. Therefore, we defined six groups of service factors that could adapt to all kinds of service settings: external variables, interior variables, ambient variables, functional variables, product/furniture/displays, and social variables. The classification of the servicescape factors is shown in Figure 2 below.

Classification of Servicescape Factors
Developing dimensions by service setting is one of the fundamental requirements to study the servicescape. Turley et al. stated five atmospheric variables as follows [21]: (a) external variables, (b) general interior variables, (c) layout and design variables, (d) point-of-purchase and decoration variables, and (e) human variables. We developed other criteria since the dimensions of Turley et al. are focused only on the retail environment [21]. Although several scholars have attempted to suggest their own category of dimensions, some of them are duplicated or are not considered, as they have not been reviewed against the respective attributes or items.
We conducted affinity analysis of the groupings of servicescape factors using the bottom-up method. After taking all attributes from the 44 studies, relative items were arranged in similar categories. Three researchers conducted this work simultaneously and compared their results with each other. To assess the inter-rater reliability with respect to the quality classifying factors, a sub-sample was coded independently by researchers. The inter-rater reliability for the total results was 0.91, showing a good agreement among the three coders on the quality of the papers. Therefore, we defined six groups of service factors that could adapt to all kinds of service settings: external variables, interior variables, ambient variables, functional variables, product/furniture/displays, and social variables. The classification of the servicescape factors is shown in Figure 2 below.

Terminology Used
Since Bitner defined servicescapes as "the physical surroundings (built environment) that impact on the behaviors of customers and employees in service organizations," [2] various studies have been conducted in different service settings, from hedonic spaces (i.e., casinos and restaurants) to utilitarian spaces (i.e., hospitals and gas stations). According to the domain of service, researchers identified specific terms by adding the particular suffix (-scape). Table 1 shows the diverse academic terms that illustrate the concept of the servicescape.

Terminology Used
Since Bitner defined servicescapes as "the physical surroundings (built environment) that impact on the behaviors of customers and employees in service organizations," [2] various studies have been conducted in different service settings, from hedonic spaces (i.e., casinos and restaurants) to utilitarian spaces (i.e., hospitals and gas stations). According to the domain of service, researchers identified specific terms by adding the particular suffix (-scape). Table 1 shows the diverse academic terms that illustrate the concept of the servicescape.
By referring to Table 1, we could determine the servicescape terminology used recently, as existing papers in the literature are numbered in chronological order. "Servicescape" and "physical environment" were the main and most recently used terminologies that explain the built environment of service settings. The term "healthscape," credited to Hutton et al., is considered official academic terminology and will be used to identify the servicescape of healthcare facilities henceforth [16].

Research Fields of Servicescape Literature
Research fields were classified according to the names of the journals. As a result, most of the studies that are related to servicescape were discussed in marketing/business/service (50%, n = 22) and tourism/hotel journals (27%, n = 12) (See Table 2). Even though the main concept of servicescape dealt with the physical environment, results indicated that design/architecture journals (9%, n = 4) rarely examined the service setting. Healthscape journals, in a similar manner, mostly published healthcare and marketing/business/service sector studies (6%, n = 3).

Research Methodology
Analyzing the research focus of journals could aid comprehension of how researchers have conducted their servicescape studies. As shown in Table 3, half of all the studies deal with the MP/DF type (50%, n = 22) compared to the TC type (11%, n = 5) and the TC/LR type (4%, n = 2). In other words, most of the researchers have examined which factors were important and how those factors influenced the servicescape in various service settings, rather than establishing or developing the concept of the servicescape. Relatively speaking, healthscape studies have been implemented at every level, from the TC to the MP/DF.

Independent Variables
Examining independent variables affected by servicescape factors could help understand the entire process of functioning of the servicescape. If one of the main goals of a marketing strategy was defined as satisfying customers [35][36][37], diverse positive emotions and reaction factors may be investigated as independent variables of the servicescape. Most of the journals analyzed influencing relationships on behavioral responses (i.e., behavioral intentions and approach/avoidance) or patronage intentions (i.e., repatronage intentions, recommendation, and positive WOM), and the servicescape. In addition, resource expenditure (i.e., money/time spent and desire to stay) and loyalty intentions were independent variables of the servicescape. Table 4 shows the framework of servicescapes.

Special Mediating/Moderating Variables
According to the type of service setting and research area, diverse mediating/moderating variables were created. Kim et al. found that restaurant type had a moderating role among perceived service quality, pleasure-feeling, and revisit intention [38]. Moreover, Ali et al. suggested national identity as a moderating factor to evaluate the physical environment for users' delight and satisfaction [11]. External factors, such as price and social factors, such as customer familiarity, were special mediating/moderating variables when evaluating service settings [39,40].

Stakeholder Perspectives
Researchers who have conducted studies on servicescapes predominantly conducted their research from the perspective of the customer (86.4%), rather than that of the service provider/staff (6.8%). If we recall, the original meaning of the servicescape has mainly been presented from the point of view of the end-user rather than that of the service provider/staff, and these results should naturally be evaluated. Nevertheless, recent studies pointed out the significance of the service environment for the service staff since they spend a lot of time with customers and there were fewer opportunities to renovate the environment for the service staff alone [41]. Table 5 below shows the number of frequencies in each of the papers that we identified using our criteria, given in Figure 1. The frequency was counted as the total number of attributes divided by the number of articles and converted in to a percentage. This numerical value could provide a clue to find out which dimensions of servicescape are addressed predominantly. Each of the papers was categorized by servicescape typology and the mean value was calculated using servicescape factors (total frequency/the number of papers).

Overall Service Setting
Among the 44 papers, there were five studies that dealt with overall service organizations. Clearly, most factors were found in ambient variables (300%, n = 15), followed by interior variables (180%, n = 9), and then followed by product/furniture/displays (140%, n = 7). If we excluded peaks (ambient variables) and valleys (exterior variables), every factor was between 100% and 200%. This could be interpreted as equally important, without any noticeable difference.

Intangible and Hedonic Servicescape (Type 01)
Intangible and hedonic servicescapes were discussed in 15 papers. These were implemented at hotels, casinos, airlines, and sports stadiums. The most frequently represented in the data were product/furniture/displays (333%, n = 50), followed by functional variables (260%, n = 39), and ambient variables (207%, n = 31). This meant that tangible clues (i.e., display panels, score boards, digital devices, and seating areas) of the service environment could be a key factor when people evaluate the whole service.

Tangible and Hedonic Servicescape (Type 02)
A majority of 17 papers from the literature list dealt with Type 02 servicescapes, such as retail stores, restaurants, and museums. Most items were categorized as product/furniture/displays (400%, n = 68), followed by ambient variables (282%, n = 48), social variables (182%, n = 31), and interior variables (165%, n = 28). It could be concluded that tangible and hedonic servicescapes are designed mainly with visible merchandise or its arrangement (composition). Moreover, adequate ambient conditions should be considered for customers to enjoy their service.

Intangible and Utilitarian Servicescape (Type 03)
Of the 44 studies, only seven researched the Type 03 servicescape, which contains healthscape. As shown below, ambient variables (328%, n = 23) are the most influential dimensions, followed by social variables (214%, n = 15), functional variables (157%, n = 11), and product/furniture/displays (143%, n = 10). Compared with other service settings, ambient conditions and social interactions were important in healthscapes even though there was no significant difference between the functional layout and product/furniture/displays. As a utilitarian servicescape, healthcare environment clearly represented different properties from hedonic servicescape (Type 01 and Type 02). Therefore, comprehensive understanding the specific characteristics of healthscape should be considered apart from other servicescape studies.
This point is discussed concretely in discussion section.

Tangible and Utilitarian Servicescape (Type 04)
None of the studies belonged to Type 04.

Visualization of Factor Classification
We summarize the results of factor classification of servicescapes and visualize them as radial graphs. Overall service, Type 01, Type 02, and Type 03 presented different features, respectively as shown in Figure 3 below. Type 03, to which healthscape belongs, is identified as requiring high levels of ambient and social factors, compared to other service settings.

Visualization of Factor Classification
We summarize the results of factor classification of servicescapes and visualize them as radial graphs. Overall service, Type 01, Type 02, and Type 03 presented different features, respectively as shown in Figure 3 below. Type 03, to which healthscape belongs, is identified as requiring high levels of ambient and social factors, compared to other service settings.

Results and Summary
Based on a systematic literature review of the selected 44 papers, this study identified current research paths to broaden our understanding of servicescapes and healthscapes. We summarized our research findings as follows.

Academic Terminologies and Journal Fields
Overall, we identified 44 relevant studies in the sources that we searched, as shown in Appendix A. The term "servicescape" and "physical environment" were predominantly used to explain a tangible environment with a general service setting. Under the influence of Bitner, the neologisms

Results and Summary
Based on a systematic literature review of the selected 44 papers, this study identified current research paths to broaden our understanding of servicescapes and healthscapes. We summarized our research findings as follows.

Academic Terminologies and Journal Fields
Overall, we identified 44 relevant studies in the sources that we searched, as shown in Appendix A. The term "servicescape" and "physical environment" were predominantly used to explain a tangible environment with a general service setting. Under the influence of Bitner, the neologisms "Dinescape," "Festivalscape," and "Healthscape" (implying the servicescape of healthcare facilities) were generated and they are currently used as official academic terminology [16,24,42].
With respect to where the servicescape literature was published, half of the studies (50%) were directly related to marketing/management/business/service fields. This contrasts strongly with the literature published in design/architecture (9%) or healthcare (6%) journals. Initially, servicescape studies were mainly implemented from the perspective of marketing or service management, although the servicescape deals with the physical environment of the service setting. The apparent lack of servicescape studies in other journal fields might be due to the fact that academic interest and attention in those fields was focused on identifying interactions between service settings and user satisfaction, and that research in this direction is less active and has low academic accessibility.

Research Methodology
By analyzing the research methodology of the servicescape, we found that 50% of the studies were classified as MP/DF and 11% of the studies were classified as TC. This record implied that recent studies on the servicescape tried to analyze the impact of multiple factors or integrate new frameworks based on Bitner's study. Compared to these, healthscape studies have been approached from various angles, from theoretical analysis to framework demonstration.

Conceptual Framework
By analyzing dependent/independent variables, we could identify the servicescape (healthscape) framework and the theoretical background that is mainly treated as a valuable concept to explain the service environment. As shown in Table 4, we found that the dominant theory on servicescape was based on service management that mainly considered user satisfaction or positive reaction to service. Most of the current studies have tried to identify relationships between servicescape cues and behavioral responses (i.e., behavioral intentions and approach/avoidance) or patronage intention (i.e., repatronage intentions, recommendations, and positive WOM). To demonstrate this, PAD (i.e., pleasure, arousal, and dominance), emotional responses (i.e., satisfaction, excitement, and affect), or service quality (i.e., perceived quality and cognition) were selected as mediating variables.

Environmental Factors by Different Service Typology
In this study, we classified the servicescape literature by adopting the service typology by Lee et al. and compared the frequently addressed factors between different types of service settings [34]. As a result, Type 01 (i.e., intangible and hedonic) and Type 02 (i.e., tangible and hedonic) were highly related to Product/Furniture/Displays. Compared to this, Type 03 (i.e., intangible and utilitarian) and overall service were highly concerned with Ambient Variables. Type 03 that contained healthscape, especially identified that social factors are highly dealt with while evaluating healthcare facilities.

Discussion and Future Challenges
This study has identified a growing body of research that examines theoretical background of the servicescape and healthscape. In relation to the outcomes, we discuss key influences and suggest future opportunities for further healthscape studies.

The Development of a Framework and Evaluation Factors for Healthscape
Through this study, we emphasized the significance of developing criteria and framing their interactions under distinct types of service settings. Researchers have begun to understand that it is not enough to adapt the general dimensions of the servicescape to every service setting [11,38,[42][43][44][45][46]. There have been few attempts to develop a theoretical background or suggest diverse frameworks that could explain how different the healthscape is from other service environments. Furthermore, there is a lack of studies to expand Bitner's criteria to explain newly introduced service areas. Even though Hutton and Richardson created the term "healthscape" in 1995, few attempts since then have been made to investigate the healthscape. Therefore, in this study, we classified several groups of servicescapes and compared the factors that are commonly considered to evaluate the service settings. As shown in Figure 3, Type 03 (i.e., intangible and utilitarian) indicates that the healthcare facility involved represented different features compared to other service types. The results showed that researchers who studied the servicescape of Type 03 are more concerned about ambient and social factors rather than interior factors. However, these results could not be judged conclusively since the articles discussing Type 03 developed their criteria by citing other studies. In addition, even though two different service environments were involved in the same type of servicescape, there could be different servicescape factors to give customers positive feelings. For instance, adequate lighting systems would be the most significant factor in layout designs of restaurants compared to those in museums while both of them are included in Type 02. Future researchers who attempt to understand the framework of healthcare environment, therefore, should develop their own criteria according to pertinent service settings.

A Differentiated Point of View to Evaluate Healthscape
Most of the research on the servicescape has dealt with the interaction between environmental factors and behavioral responses or patronage intentions, as shown in Table 4. These results have shown that the servicescape studies have been carried out primarily from the perspective of marketing and service management that are mainly concerned with customer satisfaction. Thus, more research is needed to identify how to evaluate physical service environments with a specific point of view. For instance, Bonfanti tried to identify customers' needs and expectations of a servicescape surveillance management (SSM) and adapt it to three different service settings: retail, hotel, and hospital [47]. He suggested that safety, security, and privacy could be the main criteria that service managers use to design their service environments to ensure a high level of security, while enhancing the customer service experience. This implies that different servicescape factors should be developed according to the type of stakeholder (e.g., patients or employees), the type of service setting (e.g., hospital or retail), or the purpose of the service environment (e.g., customer satisfaction or surveillance). These efforts should be adapted to the research of healthscapes. For instance, healthcare environments should be especially concerned with the safety of patients. Thus, healthscapes need to be designed by considering safety aspects more important than more pleasant spaces and emotionally favorable spaces. Various environmental factors could be developed by considering the construct of healthcare.
The interactions between different factors should be analyzed to understand the hidden architecture of a new service domain. According to these attempts, it is necessary to develop a more concrete framework to explain the healthcare service environments.

Consideration on the Impact of Enhanced Technology to Healthscape
Recent emerging technologies have expanded the area of services from physical space to cyberspace. Even further, these two distinctive spaces have merged with advanced technologies such as robotics, artificial intelligence, and cloud computing. As we previously reviewed, one of the most dramatic changes since Bitner's study is the birth of cyberspace and the advancement in technology [20]. In this study, research on e-servicescape was intentionally excluded from the final literature list since we focused on tangible properties. The intangible characteristics of the e-servicescape should be dealt with a different perspective from physical environments because those studies purely focus on digital services in the cyberspace. Nevertheless, further studies should consider how health-related information or automated services could be delivered to customers in visible (or tangible) ways, and for this, the physical environment should be changed and improved.
Healthscape should be concerned with the co-existence of tangible and intangible environments. The advancement of Information and Communication Technologies (ICTs) has enhanced the boundaries of the physical environment on healthcare service. It is considered as a key driver in the digital transformation of healthcare industry [48]. Patients can experience healthcare service and obtain their health information without visiting a hospital or clinic. Along with these dramatic changes, further research should infuse new technological characteristics into the dimensions of healthscape to explain the newly expanded cyber-physical environment of healthcare service.
With ICTs, one of the remarkable developments that scholars should consider is the advent of nursing robots or AI doctors [31]. As electronic machines could be equipped with high levels of intelligence, robots could implement autonomous action and decision-making. The immutable object of service was human beings; however, these emerging technologies bring new stakeholders to healthcare services. Future scholars should interpret and evaluate a robot not as a smart device but as a social object that could interact with people and the environment. The former healthscape studies have discussed social factors between only the service provider and customer. However, social interactions with robots should be another noticeable issue when researchers evaluate the healthcare environment.
Such development of technology seems to offer useful and convenient healthcare service. However, a transformative potential for technology could reveal unintended negative consequences [49]. Invasion of privacy, dehumanization, and infoganda would be one of the noticeable agendas on healthcare service in the next generation. Thus, the health service experience needs to be deliberated from a holistic perspective: not only embracing traditional servicescape studies but also considering the side effects of technology. With the radical improvement of technology in healthcare services, we encourage further investigation into these challenges.

Academic Implications
From the theoretical perspective, the results of this study can contribute to broaden the knowledge body of service research by conceptualizing the healthscape and by proposing a differentiated perspective from other hedonic servicescape studies. The research findings can serve as an academic compass which can support scholars to identify the academic stream and theoretical boundary of servicescape studies and to further understand the physical environment of healthcare service. The servicescape typology can allow scholars to extend research directions in diverse ways such as the comparison of significant dimensions according to different servicescape types, or the empirical verification of factor significance in each servicescape dimension.

Managerial and Policy Implications
The results of this study also have implications for the managers and marketers of healthcare industries. The factor classifications could be referred as a guideline when managers evaluate their service environments. They can analyze strengths and weaknesses of their healthscape and have a sense of what priorities should be set to improve or renovate their facilities. Additionally, managers could use the dimension of healthscape to benchmark their major competitors. They could compare service environments with those of their business rivals by analyzing based on six dimensions of healthscape.
The research findings can propose an important direction for policy makers to regulate and to promote the healthcare industries in terms of the perspective of healthscape. Understanding different characteristics by the servicescape typology can be the basis of a distinguished assessment model for various healthcare service and service environments. Weighted value between dimensions could be applied for quality estimation in case of developing an evaluation guideline for healthcare facilities. For this purpose, a future research direction could be suggested to identify the acute weighted values of healthscape dimensions based on our research findings.

Conclusions
This study aims to fill the gap between healthscape and servicescape studies using a systematic literature review. We analyzed the academic stream on servicescape studies since Bitner and identified differing points of view between healthscape and servicescape through the classification of previous research findings. Through a rigorous and systematic literature review, we implemented an in-depth analysis of new research paths on the topic using 44 selected papers. This not only broadened the academic knowledge on servicescape but also showed practical and theoretical agendas followed in healthscape studies.
Despite these efforts, there are some limitations in our study. Due to the limited number of papers, some of the results cannot be generalized to explain the servicescape of healthcare services. In this study, we could find only seven key papers that dealt with the physical environment of healthcare services. Due to the shortage of healthscape journals, we were unable to conduct an in-depth analysis in a qualitative and quantitative way. Moreover, almost half of the healthscape studies are published in journals in the field of healthcare. More research is recommended from the point of view of the fields of psychology or design/architecture. In addition, field studies or empirical research are needed to detect which factors are significant to manage the servicescape of healthcare services, compared to the traditional servicescape framework. Furthermore, this study considered the customer interaction partially by classifying social factor as one of the primary dimensions and analyzing the framework of servicescape. Based on the results of this study, more researches should examine not only the interactions between derived servicescape factors and customer responses (e.g., physiological response, emotional response, and behavioral response) but also its delivery process.
Through this study, we suggest three points of view to consider for future healthscape studies: (1) the development of a framework and evaluation factors suitable for healthcare service settings that could be distinguished from general commercial servicescapes; (2) a differentiated point of view to evaluate the physical environment; and (3) consideration on the impact of enhanced technology to healthscape.
Our research findings can contribute to a deep understanding of new ways to interpret specific features of the servicescape and healthscape as well. Our implications are valuable as these results could suggest academic agendas in physical service environments.