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To Catch Fear In A Bottle: Conceptualizing and Measuring Perceived Safety in Urban Environments
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Samhällsplanering och miljö, Urbana och regionala studier. (Urban & Community Safety Research Group)ORCID-id: 0000-0003-2050-8365
2025 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Hållbar utveckling
SDG 11: Hållbara städer och samhällen, SDG 16: Fredliga och inkluderande samhällen
Abstract [en]

Cities are complex, dynamic and constantly evolving systems, shaped by a plethora of factors that in turn significantly impact our individual safety. These factors are embedded in everything from the physical design of urban settings to the social interactions and activities that take place within them. Compared to other urban challenges such as crime, perceived safety and fear are more abstract and subjective phenomena that are much more difficult to define, understand and not to mention prevent. The aim of this thesis is to examine how perceived safety can be conceptualized and measured in urban environments in order to enhance the accuracy and comprehensiveness of urban safety diagnostics. The approaches of the studies explore both more traditional methods of surveys, regression models and spatial analysis, as well as more emergent methodologiesof the past few decades, such as deep learning models and mobile app data collection. The studies include analyses of perceived safety on multiple levels, from meso- to microlevel, comparisons of residents and non-residents, as well as intersectional analyses of gender, age, ethnicity, and income. The findings of the thesis highlight how various conceptualizations of perceived safety and methodologies used to measure them reveal different understandings. Local and global measures of fear have inverted relationships with marginalized men in Sweden, who, in contrast to common beliefs, express similar levels of poor neighborhood safety to women overall. Spatial and conceptual contrasts were identified between survey-based measures of neighborhood safety, objective safety measures such as crime rates, and safety scores generated by deep learning models. A survey based on a public participation geographic information system (PPGIS) revealed the moderating effect of place familiarity and place stigma, where minor differences in neighborhood familiarity were found to significantly affect perceptions. Mobile app data collection was also found to be a potential way to capture highly spatio-temporally detailed data on perceived safety, while retaining the ability to capture personal narratives and emotional connections to place. The thesis concludes with a reflection of implications and practical insights of the findings for researchers, urban planners, and policymakers, encouraging strategies for more comprehensive diagnostics of safety. 

Abstract [sv]

Städer är komplexa, dynamiska och ständigt föränderliga system, formade av en mängd olika faktorer som i sin tur har en betydande inverkan på vår individuella trygghet. Dessa faktorer är inbäddade i allt från den fysiska utformningen av urbana miljöer till de sociala interaktioner och aktiviteter som äger rum inom dem. Jämfört med andra urbana utmaningar såsom brottslighet är upplevd trygghet och rädsla mer abstrakta och subjektiva fenomen som är mycket svårare att definiera, förstå och inte minst att förebygga. Syftet med denna avhandling är att undersöka hur upplevd trygghet kan konceptualiseras samt mätas i urbana miljöer för att förbättra träffsäkerheten och omfattningen av trygghetsdiagnostik i städer. Angreppssätten i de inkluderade studierna omfattar både mer traditionella metoder såsom enkäter, regressionsmodeller och geografiska analyser, men även nyare metoder från de senaste decennierna såsom djupinlärningsmodeller (deep learning-modeller) och datainsamling via mobilapplikationer. Studierna inkluderar analyser av trygghet på flera nivåer, från meso- till mikronivå, jämförelser mellan boende och icke-boende, samt intersektionella analyser av kön, ålder, etnicitet och inkomst. Avhandlingens resultat belyser hur olika konceptualiseringar av upplevd trygghet och de metoder som används för att mäta dem ger upphov till olika förståelser. Lokala och globala mått på rädsla visade omvända samband för marginaliserade män i Sverige, vilka uttrycker – i motsats till rådande uppfattningar – liknande nivåer av otrygghet i sina bostadsområden som kvinnor i stort. Geografiska och konceptuella kontraster identifierades mellan enkätbaserade mått på trygghet i bostadsområden, objektiva säkerhetsmått såsom brottsstatistik, samt trygghetspoäng genererade av djupinlärningsmodeller. En enkät baserad på PPGIS (Participatory Public Geographic Information System) visade på den modererande effekten av platsbekantskap och platsrelaterad stigma, där små skillnader i kännedom om området hade stor påverkan på trygghetsuppfattningen. Datainsamling med hjälp av en mobilapplikation visade också potential att fånga in mycket detaljrik rumslig och tidsmässig data om upplevd trygghet, samtidigt som den möjliggör insamling av personliga berättelser och känslomässiga band till platsen. Avhandlingen avslutas med en reflektion kring implikationer och praktiska insikter av resultaten för forskare, stadsplanerare och beslutsfattare, med en uppmaning till strategier för mer heltäckande trygghetsdiagnostik.

Ort, förlag, år, upplaga, sidor
Stockholm: KTH Royal Institute of Technology, 2025. , s. 66
Serie
TRITA-ABE-DLT ; 2517
Nyckelord [en]
Urban safety, spatial analysis, GeoAI, territorial stigma, participatory mapping
Nyckelord [sv]
Urban trygghet, rumslig analys, GeoAI, territorial stigma, deltagarstyrd kartläggning
Nationell ämneskategori
Kriminologi Kulturgeografi
Forskningsämne
Samhällsplanering
Identifikatorer
URN: urn:nbn:se:kth:diva-364197ISBN: 978-91-8106-326-4 (tryckt)OAI: oai:DiVA.org:kth-364197DiVA, id: diva2:1964951
Disputation
2025-08-28, Kollegiesalen, Brinellvägen 8, KTH Campus, public videoconference link https://kth-se.zoom.us/j/61193674132, Stockholm, 09:00 (Engelska)
Opponent
Handledare
Anmärkning

Research funders: Stockholm Senseable Lab, Stockholm Chamber of Cimmerce, Newsec, Digital Futures

QC 20250627

Tillgänglig från: 2025-06-27 Skapad: 2025-06-06 Senast uppdaterad: 2025-12-17Bibliografiskt granskad
Delarbeten
1. Men's fear in public places: A Stockholm case study
Öppna denna publikation i ny flik eller fönster >>Men's fear in public places: A Stockholm case study
(Engelska)Manuskript (preprint) (Övrigt vetenskapligt)
Abstract [en]

While the Nordics have long acted as champions of gender equality, there is still a need for a more nuanced understanding of gendered differences in safety and well-being. A large body of research on masculinity and fear have found men to express fear in public space to a lesser extent than women, perpetuating a notion of men as ‘fearless’. In this study, we challenge this notion by seeking a better understanding of men’s overall fear of victimization as well as how fear impacts their behavior where they live, in relation to places, people, and everyday routines. Using statistical methods; chi-square analysis and binary logistic regression, we investigate the nature of men’s fear and the effect fear has on their lives using 20 781 answers from the 2020 Stockholm Safety Survey. Findings indicate that while men are generally less fearful than women, intersections between respondents’ gender, income level, and ethnic background show a complementary picture. Foreign-born and low-income resident men expressed similar or even higher levels of neighborhood fear than women. Additionally, the drivers of men’s general fear of crime and neighborhood-related fear were found to differ, where results for Swedish-born respectively foreign-born men show opposing patterns for each measure. Men who live in neighborhoods with more physical disorder and low social cohesion are also more likely to avoidplaces and engagement with people where they live, as well as changing routine activities. The paper finishes with recommendations for future research.

Nyckelord
fear of crime, gender, masculinity, intersectionality, safety perceptions
Nationell ämneskategori
Kriminologi
Identifikatorer
urn:nbn:se:kth:diva-364190 (URN)
Anmärkning

QC 20250605

Tillgänglig från: 2025-06-05 Skapad: 2025-06-05 Senast uppdaterad: 2025-06-06Bibliografiskt granskad
2. Assessing differences in safety perceptions using GeoAI and survey across neighbourhoods in Stockholm, Sweden
Öppna denna publikation i ny flik eller fönster >>Assessing differences in safety perceptions using GeoAI and survey across neighbourhoods in Stockholm, Sweden
Visa övriga...
2023 (Engelska)Ingår i: Landscape and Urban Planning, ISSN 0169-2046, E-ISSN 1872-6062, Vol. 236, s. 104768-104768, artikel-id 104768Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The safety perception of the built environment, rather than the sheer number of crimes and incivility behavior, is a fundamental driver of public policies intended to improve urban safety. Traditional surveys often capture neighborhood residents’ perceived safety, but may not fully reflect the perceptions of people who are unfamiliar with the area. In this study, focused on the city of Stockholm, Sweden, we develop a geospatial artificial intelligence (GeoAI) approach using street view images and recruiting locals to create a measure of citywide residents’ safety perceptions. We compare the measures from the survey based on neighborhood residents’ responses with those from the GeoAI approach to better understand the relationship between these safety measures. We model the two forms of safety perceptions and their disparities (i.e., perception bias) as a function of the city’s land use and its socio-demographics. Results confirm that while the GeoAI-based measures better capture people’s instant impressions of the built environment across the city, the survey-based measures reflect their overall daily experiences of specific areas. Regions that appear to be economically vibrant and have inner-city streetscapes are perceived as safe places from visual appearance but are not always perceived as such by residents. Older adults tend to overestimate their likelihood of being victimized by crime, which may enlarge perception bias. The study concludes by critically assessing the potential ethical issues (e.g., spatial bias, population bias) in the proposed methodology and making suggestions for future research.

Ort, förlag, år, upplaga, sidor
Elsevier BV, 2023
Nationell ämneskategori
Samhällsvetenskap
Forskningsämne
Arkitektur, Stadsbyggnad
Identifikatorer
urn:nbn:se:kth:diva-326752 (URN)10.1016/j.landurbplan.2023.104768 (DOI)000990616100001 ()2-s2.0-85152740824 (Scopus ID)
Anmärkning

QC 20230613

Tillgänglig från: 2023-05-09 Skapad: 2023-05-09 Senast uppdaterad: 2025-06-06Bibliografiskt granskad
3. Crime and Visually Perceived Safety of the Built Environment: A Deep Learning Approach
Öppna denna publikation i ny flik eller fönster >>Crime and Visually Perceived Safety of the Built Environment: A Deep Learning Approach
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2025 (Engelska)Ingår i: Annals of the American Association of Geographers, ISSN 2469-4452, E-ISSN 2469-4460, Vol. 115, nr 7, s. 1613-1633Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Although the influence of the built environment on both crime and people’s safety perceptions is well documented in the international literature, less evidence is found regarding the link between urban safety perceptions and crime occurrence. In this article, we investigate the potential relationship between crime and visual perceived safety (VPS), using Stockholm, Sweden as a case. Central to the study is the VPS score, a detailed measure of VPS and situational fear, created by combining a deep learning model with a data set of local street view images and citizen impressions. We examine this measure together with traditional crime records to compare the city’s distribution of safety and crime. First, geographical patterns and spatial clusters of high and low levels of crime and VPS were detected. Then, drawing from principles of environmental criminology, a spatial regression was used to examine the relationship between the VPS score and crime, controlling for sociodemographics and land-use factors. Findings show that crime rates of different types are significant predictors of poor VPS, but mismatching geographies of perceived safety and crime are common. The article discusses the findings and finishes by highlighting the impact of these results for research and practice.

Ort, förlag, år, upplaga, sidor
Informa UK Limited, 2025
Nationell ämneskategori
Kriminologi
Identifikatorer
urn:nbn:se:kth:diva-364194 (URN)10.1080/24694452.2025.2501998 (DOI)001497335300001 ()2-s2.0-105006974047 (Scopus ID)
Anmärkning

QC 20250609

Tillgänglig från: 2025-06-05 Skapad: 2025-06-05 Senast uppdaterad: 2025-12-30Bibliografiskt granskad
4. From Locals To Outsiders: A Comparative Analysis of Neighborhood Safety Perceptions
Öppna denna publikation i ny flik eller fönster >>From Locals To Outsiders: A Comparative Analysis of Neighborhood Safety Perceptions
(Engelska)Manuskript (preprint) (Övrigt vetenskapligt)
Abstract [en]

Perceived neighborhood safety significantly affects the quality of life and social cohesion of communities. However, the perspectives of non-residents are often neglected, despite their potential influence on local views. This study addresses this gap by examining how locals (residents and frequent visitors) and outsiders (non-visitors) perceive safety in the largely stigmatized Stockholm district Järva. We use a digital mapping tool designed to facilitate participatory planning and engagement to allow citizens to create interactive maps and provide information about victimization and safety perceptions. Surveying 592 respondents and using a mixed-methods approach, the study investigates the environmental, social, and emotional factors shaping these perceptions. Findings highlight how stigma, place attachment and familiarity play an important role in moderating safety concerns, as even minor first-hand experience with Järva was linked to improved neighborhood perception. The study concludes by reflecting upon the importance of addressing territorial stigma and promoting local engagement to improve local and outsider safety perceptions. 

Nyckelord
neighborhood safety, stigma, place attachment, familiarity, built environment
Nationell ämneskategori
Kriminologi
Identifikatorer
urn:nbn:se:kth:diva-364191 (URN)
Anmärkning

QC 20250605

Tillgänglig från: 2025-06-05 Skapad: 2025-06-05 Senast uppdaterad: 2025-06-06Bibliografiskt granskad
5. Urban Safety in the Eyes of the Youth: A Mobile App Study of Swedish Adolescents in a Stigmatized Neighborhood
Öppna denna publikation i ny flik eller fönster >>Urban Safety in the Eyes of the Youth: A Mobile App Study of Swedish Adolescents in a Stigmatized Neighborhood
(Engelska)Manuskript (preprint) (Övrigt vetenskapligt)
Abstract [en]

Most research on fear and safety perceptions focuses on adults, with limited attention to youth perspectives. When included, youth perspectives are often filtered through adult-designed surveys that overlook their unique vulnerabilities and relation to urban space. This gap in research may not only obscure adolescent vulnerability but also risk reinforcing negative stereotypes, as young people are often framed as contributors to urban safety concerns rather than as stakeholders. This study explores the potential of mobile applications as a tool for capturing youth perceptions of neighborhood safety. Unlike traditional surveys, smartphone applications facilitate real-time data collection, allowing participants to provide geotagged safety assessments, images, and contextual insights. The study focuses on a small sample of young residents in the largely stigmatized Järva district of Stockholm, Sweden, using Street Eye, a mobile application developed to document and analyze safety perceptions in urban spaces. Following the data collection, a workshop was conducted with participants to further contextualize their experiences. The findings contribute to the broader understanding of how adolescents experience urban safety and its relationship with place stigma, while highlightingthe potential of mobile technologies in enhancing participatory research on the geographies of fear and safety.

Nyckelord
perceived safety, youth, mobile application, participatory mapping, built environment, territorial stigma
Nationell ämneskategori
Social och ekonomisk geografi
Identifikatorer
urn:nbn:se:kth:diva-364193 (URN)
Projekt
Sensoring Safety Perceptions
Anmärkning

QC 20250609

Tillgänglig från: 2025-06-05 Skapad: 2025-06-05 Senast uppdaterad: 2025-06-09Bibliografiskt granskad

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