All Stories

  1. Views on dementia among informal caregivers of people with dementia: A scoping review and thematic analysis of qualitative studies
  2. Assessment of the validity of the Resilience and Strain Questionnaire in Caregivers of People with Dementia (ResQ-Care-Dem): a cross-sectional survey study
  3. Identifying Unmet Needs of Informal Dementia Caregivers in Clinical Practice: User-Centered Development of a Digital Assessment Tool
  4. Effective for Whom? A Review of Psychological and Social Intervention Recommendations in European Dementia Care Guidelines Through the Lenses of Social Health and Intersectionality
  5. Effective for Whom? A Review of Psychological and Social Intervention Recommendations in European Dementia Care Guidelines, Through the Lenses of Social Health and Intersectionality
  6. Acceptance of Unsupervised App-Based Cognitive Assessment in Outpatient Care: An Implementation Study
  7. Informal Caregivers of People with Dementia in Germany: Psychosocial Characteristics and Unmet Needs
  8. Implementing Dementia Care Management into routine care: protocol for a cohort study in Siegen-Wittgenstein, Germany (RoutineDeCM)
  9. Identifying unmet needs of dementia caregivers in clinical practice: A user-centered development of a digital assessment (Preprint)
  10. Geriatrie
  11. Versorgungslücken nach dem Krankenhausaufenthalt schließen: Studienergebnisse [intersec-CM] zum Entlass- und Überleitungsmanagement nach § 39 SGB V für Menschen, die im Krankenhaus kognitive demenzielle Beeinträchtigungen zeigen
  12. What influences life expectancy in people with dementia? Social support as an emerging protective factor
  13. Who Benefited the Most? Effectiveness of a Lifestyle Intervention Against Cognitive Decline in Older Women and Men – Secondary Analysis of the AgeWell.de-trial
  14. Assessment of the Validity of the Resilience and Strain Questionnaire in Caregivers of People with Dementia (ResQ-Care-Dem)
  15. Lebensalltag und psychosoziale Gesundheit älterer Menschen mit kognitiven Beeinträchtigungen während der COVID-19-Pandemie
  16. Mediating Factors Associated With Physical Activity in Older Adults at Increased Dementia Risk
  17. Can german discharge management by law support people with cognitive impairments across sectors
  18. Effectiveness of a digitally supported care management program for family and other informal dementia caregivers: baseline data and first results from the GAIN randomized controlled trial
  19. Estimating the potential for prevention of dementia in Germany
  20. Exploring barriers and facilitators for effective implementation of a physical activity project for people with dementia based on the consolidated framework for implementation research (CFIR)
  21. Supporting elderly people with cognitive impairment during and after hospital stays with Intersectoral Care Management – results of a randomized controlled trial
  22. A multidomain intervention against cognitive decline in an at‐risk‐population in Germany: Results from the cluster‐randomized AgeWell.de trial
  23. Associations of Depressive Symptoms with Subjective Cognitive Decline in Elderly People—A Cross-Sectional Analysis from the AgeWell.de-Study
  24. Implementing a physical activity project for people with dementia in Germany–Identification of barriers and facilitator using consolidated framework for implementation research (CFIR): A qualitative study
  25. Dementia in Germany: epidemiology and prevention potential
  26. COVID-19 government measures and their impact on mental health: a cross-sectional study of older primary care patients in Germany
  27. Mobile, alltagsnahe digitale Technologien für die Prävention der Alzheimer-Demenz: kognitive Gesundheit und kognitive Sicherheit
  28. Prävention und Gesundheitsförderung bei Demenz: Änderungsmotivation im Rahmen präventiver Interventionen – empirische Ergebnisse
  29. Impact of Hearing Aids on Progression of Cognitive Decline, Depression, and Quality of Life Among People with Cognitive Impairment and Dementia
  30. Depression and Anxiety in Old Age during the COVID-19 Pandemic: A Comparative Study of Individuals at Cardiovascular Risk and the General Population
  31. Tasks and activities of an effective collaborative Dementia Care Management program in German Primary Care
  32. Structures for the care of people with dementia: a European comparison
  33. Social Network and Participation in Elderly Primary Care Patients in Germany and Associations with Depressive Symptoms—A Cross-Sectional Analysis from the AgeWell.de Study
  34. Regionale Gesundheitsnetzwerke in Deutschland: Charakteristik und Finanzierung am Beispiel regionaler Demenznetzwerke
  35. Differences and commonalities of home-based care arrangements for persons living with dementia in Germany – a theory-driven development of types using multiple correspondence analysis and hierarchical cluster analysis
  36. The early impacts of COVID-19 on unpaid carers of people living with dementia: part II of a mixed-methods systematic review
  37. The early impacts of COVID-19 on people living with dementia: part I of a mixed-methods systematic review
  38. Demenz und Migration
  39. Tasks and Activities of an Effective Collaborative Dementia Care Management Program in German Primary Care
  40. Intercultural care for people of migrant origin with dementia – A literature analysis
  41. Adapting a Dementia Care Management Intervention for Regional Implementation: A Theory-Based Participatory Barrier Analysis
  42. Associations Between Low-Value Medication in Dementia and Healthcare Costs
  43. Intersectionality and its relevance for research in dementia care of people with a migration background
  44. Clinical research in dementia: A perspective on implementing innovation
  45. Physical Activity Determinants in Older German Adults at Increased Dementia Risk with Multimorbidity: Baseline Results of the AgeWell.de Study
  46. Pathways of care: a qualitative study of barriers and facilitators to engaging dementia care among underserved and minority populations in the US and Germany
  47. Dementia and migration: culturally sensitive healthcare services and projects in Germany
  48. Association of mental demands in the workplace with cognitive function in older adults at increased risk for dementia
  49. Dementia Caregivers’ Experiences Engaging Supportive Services While Residing in Under-Resourced Areas
  50. Prevalence of Low-Value Care and Its Associations with Patient-Centered Outcomes in Dementia
  51. Physical Activity Interventions and Their Effects on Cognitive Function in People with Dementia: A Systematic Review and Meta-Analysis
  52. The challenges of achieving timely diagnosis and culturally appropriate care of people with dementia from minority ethnic groups in Europe
  53. Sociodemographic aspects and health care-related outcomes: a latent class analysis of informal dementia care dyads
  54. Describing people with cognitive impairment and their complex treatment needs during routine care in the hospital – cross-sectional results of the intersec-CM study
  55. Correction to: Effectiveness of a digitally supported care management programme to reduce unmet needs of family caregivers of people with dementia: study protocol for a cluster randomised controlled trial (GAIN)
  56. Effectiveness of a digitally supported care management programme to reduce unmet needs of family caregivers of people with dementia: study protocol for a cluster randomised controlled trial (GAIN)
  57. What elements are important in current treatment and care guidelines to provide culturally sensitive care for people with a migration background and dementia? A systematic analysis
  58. Types of leisure time physical activities (LTPA) of community-dwelling persons who have been screened positive for dementia
  59. „Das muss man so nehmen.“ Eine Studie zum subjektiven Erleben der Coronapandemie älterer hilfe- und pflegebedürftiger Menschen in der Häuslichkeit
  60. Describing people with cognitive impairment and their complex treatment needs during routine care in the hospital – cross-sectional results of the intersec-CM study
  61. Intersectoral care management for older people with cognitive impairment during and after hospital stays [intersec-CM]: study protocol for a process evaluation within a randomised controlled trial
  62. Recruitment and Baseline Characteristics of Participants in the AgeWell.de Study—A Pragmatic Cluster-Randomized Controlled Lifestyle Trial against Cognitive Decline
  63. The situation of elderly with cognitive impairment living at home during lockdown in the Corona-pandemic in Germany
  64. The situation of elderly with cognitive impairment living at home during lockdown in the Corona-pandemic in Germany
  65. The situation of elderly with cognitive impairment living at home during lockdown in the Corona-pandemic in Germany
  66. The situation of elderly with cognitive impairment living at home during lockdown in the Corona-pandemic in Germany
  67. Gesundheitsversorgung der Zukunft – Erkenntnisse und Strategie der (Demenz‑)Versorgungsforschung
  68. How is migration background considered in the treatment and care of people? A comparison of national dementia care guidelines in Europe
  69. How is migration background considered in the treatment and care of people? A comparison of national dementia care guidelines in Europe
  70. Dementia in People with a Turkish Migration Background: Experiences and Utilization of Healthcare Services
  71. The Situation of Elderly With Cognitive Impairment Living at Home During Lockdown in the Corona-pandemic in Germany
  72. Die Entwicklung der geschätzten Anzahl an Demenz erkrankter Menschen auf Kreisebene in Deutschland für 2030
  73. Erratum zu: Die Prävalenz an Demenz erkrankter Menschen in Deutschland – eine bundesweite Analyse auf Kreisebene
  74. The situation of elderly with cognitive impairment living at home during lockdown in the Corona-pandemic in Germany
  75. Putting primary prevention of dementia on everybody’s agenda
  76. Acceptability and Validity of the EQ-5D in Patients Living With Dementia
  77. Comparing national dementia plans and strategies in Europe – is there a focus of care for people with dementia from a migration background?
  78. Comparing national dementia plans and strategies in Europe – Is there a focus of care for people with dementia from a migration background?
  79. Die Prävalenz an Demenz erkrankter Menschen in Deutschland – eine bundesweite Analyse auf Kreisebene
  80. Das Entlassmanagement deutscher Krankenhäuser für kognitiv beeinträchtigte, ältere Menschen – ein Scoping Review
  81. Who Benefits Most from Collaborative Dementia Care from a Patient and Payer Perspective? A Subgroup Cost-Effectiveness Analysis
  82. Why do family dementia caregivers reject caregiver support services? Analyzing types of rejection and associated health-impairments in a cluster-randomized controlled intervention trial
  83. Drug-Related Problems Increase Healthcare Costs for People Living with Dementia
  84. Regional and local dementia care networks
  85. Contributors
  86. Supporting elderly people with cognitive impairment during and after hospital stays with intersectoral care management: study protocol for a randomized controlled trial
  87. Innovation in der Diagnostik – mobile Technologien
  88. Cost-effectiveness of a collaborative dementia care management-Results of a cluster-randomized controlled trial
  89. Burden of caring for people with dementia – comparing family caregivers and professional caregivers. A descriptive study
  90. AgeWell.de – study protocol of a pragmatic multi-center cluster-randomized controlled prevention trial against cognitive decline in older primary care patients
  91. O5‐08‐06: COST‐EFFECTIVENESS OF A COLLABORATIVE DEMENTIA CARE MANAGEMENT – RESULTS OF A CLUSTER‐RANDOMIZED CONTROLLED TRIAL
  92. Burden of caregivers of patients with frontotemporal lobar degeneration – a scoping review
  93. Comorbidity in Dementia Diseases and Associated Health Care Resources Utilization and Cost
  94. Germany
  95. Identifying Unmet Needs of Family Dementia Caregivers: Results of the Baseline Assessment of a Cluster-Randomized Controlled Intervention Trial
  96. Comparing National Dementia Plans and Strategies in Europe - Is There a Focus of Care for People with Dementia from a Migration Background?
  97. How Does Utilization of Health Care Services Change in People with Dementia Served by Dementia Care Networks? Results of the Longitudinal, Observational DemNet-D-Study
  98. Prävalenz von Demenz bei Menschen mit Migrationshintergrund in Deutschland
  99. Quality of life in persons with dementia using regional dementia care network services in Germany: a one-year follow-up study
  100. Hippocampal Mean Diffusivity for the Diagnosis of Dementia and Mild Cognitive Impairment in Primary Care
  101. Prevalence and Determinants of Agonistic Autoantibodies Against α1-Adrenergic Receptors in Patients Screened Positive for Dementia: Results from the Population-Based DelpHi-Study
  102. Patients with Dementia in Primary Care: Who Is Referred to a Neurologist/Psychiatrist and What Patient-Oriented Factors Are Associated with the Visit?
  103. The Impact of Hospitalization on Readmission, Institutionalization, and Mortality of People with Dementia: A Systematic Review and Meta-Analysis
  104. Multicenter Resting State Functional Connectivity in Prodromal and Dementia Stages of Alzheimer’s Disease
  105. 13 .Modellprojekte zur Versorgung
  106. Offene Versorgungsbedarfe pflegender Angehöriger von Menschen mit Demenz
  107. Patient Variables Associated with the Assignment of a Formal Dementia Diagnosis to Positively Screened Primary Care Patients
  108. Potential Role of Neuroimaging Markers for Early Diagnosis of Dementia in Primary Care
  109. The Clock Drawing Test: A Reasonable Instrument to Assess Probable Dementia in Primary Care?
  110. Editorial: Early Recognition of Dementia in Primary Care- Current Issues and Concepts
  111. Supporting family dementia caregivers: testing the efficacy of dementia care management on multifaceted caregivers’ burden
  112. Effectiveness and Safety of Dementia Care Management in Primary Care
  113. Drug-related problems in community-dwelling primary care patients screened positive for dementia
  114. How to Initiate Dementia Care Networks? Processes, Barriers, and Facilitators During the Development Process of a Practice-Oriented Website Toolkit Out of Research Results
  115. HEALTH AND SOCIAL SERVICE INTERVENTIONS
  116. WHAT DO WE LEARN FROM A CLUSTER-RANDOMISED CONTROLLED TRIAL OF DEMENTIA CARE MANAGEMENT IN GERMANY?
  117. 110 years after Auguste Deter
  118. Translation of imaging biomarkers from clinical research to healthcare
  119. Menschen mit Demenz in der primärärztlichen Versorgung
  120. Neue Perspektiven für die Demenzforschung diskutiert
  121. Dementia care management in primary care
  122. Regional dementia care networks in Germany: changes in caregiver burden at one-year follow-up and associated factors
  123. Consequences of clinical case management for caregivers: a systematic review
  124. Healthcare utilization and costs in primary care patients with dementia: baseline results of the DelpHi-trial
  125. Technologies to Support Community-Dwelling Persons With Dementia: A Position Paper on Issues Regarding Development, Usability, Effectiveness and Cost-Effectiveness, Deployment, and Ethics
  126. Hippocampus and Basal Forebrain Volumetry for Dementia and Mild Cognitive Impairment Diagnosis: Could It Be Useful in Primary Care?
  127. Potentially Inappropriate Medication in Community-Dwelling Primary Care Patients who were Screened Positive for Dementia
  128. Relatives’ burden of caring for people screened positive for dementia in primary care
  129. The impact of socioeconomic factors on the efficiency of voluntary toxoplasmosis screening during pregnancy: a population-based study
  130. Versorgung von Menschen mit Demenz in der Häuslichkeit
  131. Caregiver burden assessed in dementia care networks in Germany: findings from the DemNet-D study baseline
  132. Living Alone with Dementia: Prevalence, Correlates and the Utilization of Health and Nursing Care Services
  133. Community-Dwelling People Screened Positive for Dementia in Primary Care: A Comprehensive, Multivariate Descriptive Analysis Using Data from the DelpHi-Study
  134. Finanzierung von Demenznetzwerken
  135. Systematic, early identification of dementia and dementia care management are highly appreciated by general physicians in primary care – results within a cluster-randomized-controlled trial (DelpHi)
  136. Fokus auf Amyloid und Tau
  137. Unmet Needs of Community-Dwelling Primary Care Patients with Dementia in Germany: Prevalence and Correlates
  138. Regionale Demenznetzwerke in Deutschland
  139. Knowledge management in dementia care networks: a qualitative analysis of successful information and support strategies for people with dementia living at home and their family caregivers
  140. Depressive symptoms and depression in people screened positive for dementia in primary care – results of the DelpHi-study
  141. How do people with dementia utilise primary care physicians and specialists within dementia networks? Results of the Dementia Networks in Germany (DemNet-D) study
  142. Qualifications for nurses for the care of patients with dementia and support to their caregivers: A pilot evaluation of the dementia care management curriculum
  143. Dementia: Introduction, Epidemiology and Economic Impact
  144. Role of Specialist Care in Dementia
  145. Economic Analysis of Formal Care, Informal Care, and Productivity Losses in Primary Care Patients who Screened Positive for Dementia in Germany
  146. Healthcare resource utilization and cost in dementia: are there differences between patients screened positive for dementia with and those without a formal diagnosis of dementia in primary care in Germany? – ERRATUM
  147. Multimodal imaging in Alzheimer's disease: validity and usefulness for early detection
  148. Healthcare resource utilization and cost in dementia: are there differences between patients screened positive for dementia with and those without a formal diagnosis of dementia in primary care in Germany?
  149. Früherkennung der Demenz in der Hausarztpraxis: Subjektive Gedächtnislücken sind kein geeigneter Indikator
  150. Subjective memory impairment: No suitable criteria for case-finding of dementia in primary care
  151. Burden of Behavioral and Psychiatric Symptoms in People Screened Positive for Dementia in Primary Care: Results of the DelpHi-Study
  152. „Aging Brain Care Program“ aus Indianapolis
  153. Antidementia drug treatment in dementia networks in Germany: use rates and factors associated with treatment use
  154. Nonpharmacological therapies and provision of aids in outpatient dementia networks in Germany: utilization rates and associated factors
  155. Rates of formal diagnosis of dementia in primary care: The effect of screening
  156. Antidementia Drug Treatment in People Screened Positive for Dementia in Primary Care
  157. Herausforderung Demenz
  158. Antipsychotic Drug Treatment in Ambulatory Dementia Care: Prevalence and Correlates
  159. Neuropsychiatric symptoms in people screened positive for dementia in primary care
  160. Medication Cost of Persons with Dementia in Primary Care in Germany
  161. Rates of Formal Diagnosis in People Screened Positive for Dementia in Primary Care: Results of the DelpHi-Trial
  162. The benefits of implementing a computerized Intervention-Management-System (IMS) on delivering integrated dementia care in the primary care setting
  163. Does an Interdisciplinary Network Improve Dementia Care? Results from the IDemUck-Study
  164. GeKoKidS – Gesundheitskompetenz bei Kindern in der Schule
  165. Chronic diseases in pregnant women: prevalence and birth outcomes based on the SNiP-study
  166. Dementia care management: going new ways in ambulant dementia care within a GP-based randomized controlled intervention trial
  167. Medication management for people with dementia in primary care: description of implementation in the DelpHi study
  168. Interventions into the care system for dementia
  169. Dementia Care and General Physicians - a Survey on Prevalence, Means, Attitudes and Recommendations
  170. Life- and person-centred help in Mecklenburg-Western Pomerania, Germany (DelpHi): study protocol for a randomised controlled trial
  171. Cognitive impairment in primary ambulatory health care: pharmacotherapy and the use of potentially inappropriate medicine
  172. Frequency and determinants of potential drug-drug interactions in an elderly population receiving regular home visits by GPs - results of the home medication review in the AGnES-studies
  173. Implementation and evaluation of the population-based programme "health literacy in school-aged children" (GeKoKidS)
  174. Development and Psychometric Properties of a Short Situational Urge to Smoke Scale (SUS) for Smoking Adolescents
  175. Situational Urge to Smoke Scale
  176. Changing maternity leave policy: Short-term effects on fertility rates and demographic variables in Germany
  177. A descriptive analysis of relations between parents' self-reported smoking behavior and infants' daily exposure to environmental tobacco smoke
  178. The Exposure to Environmental Tobacco Smoke and Attitudes Towards Tobacco Control Measures - A Comparison of 5 European Countries
  179. Predicting the Urge to Smoke in a Population-Based Sample of Adolescent Smokers
  180. Population-based smoking cessation in women post partum: adherence to motivational interviewing in relation to client characteristics and behavioural outcomes
  181. Health-related behaviour, knowledge, attitudes, communication and social status in school children in Eastern Germany
  182. Survey of Neonates in Pomerania (SNiP): a population-based birth study - objectives, design and population coverage
  183. Soziodemografie von Erstgebärenden und Mehrfachgebärenden in einer bevölkerungsrepräsentativen Erhebung – Ergebnisse des Survey of Neonates in Pomerania (SNiP)
  184. Support for smoke-free policies in a pro-smoking culture: findings from the European survey on tobacco control attitudes and knowledge
  185. Naturalistic changes in the readiness of postpartum women to quit smoking
  186. Intention to change smoking in pregnant and postpartum women according to number of pregnancies
  187. Smoking Cessation Counselling for Pregnant and Postpartum Women among Midwives, Gynaecologists and Paediatricians in Germany
  188. Smoking cessation and relapse prevention for postpartum women: Results from a randomized controlled trial at 6, 12, 18 and 24 months
  189. Smoking policies in hospitals before the non-smoker protection law in Germany
  190. Kontinuierliche individuelle Förderung der Rauchabstinenz bei sozial benachteiligten jungen Erwachsenen über das Handy – Ergebnisse einer Pilotstudie
  191. Interventionen gegen das Tabakrauchen in der Schwangerschaft und post partum. Modalitäten, Wirksamkeit, Einführung in die Motivierende Gesprächsführung und sozial-kognitive Modelle zur Verhaltensänderung
  192. Postpartum Smoking Cessation and Relapse Prevention Intervention: A Structural Equation Modeling Application to Behavioral and Non-behavioral Outcomes of a Randomized Controlled Trial
  193. Smoking During Pregnancy and Postpartum: Smoking Rates and Intention to Quit Smoking or Resume After Pregnancy
  194. Prävalenz des Rauchens vor und während der Schwangerschaft - populationsbasierte Daten
  195. Multiple health risk behaviors in German first year university students
  196. Neue Interventionsansätze zur Sekundärprävention alkoholbezogener Störungen im Allgemeinkrankenhaus
  197. The relationship between smokers' motivation to quit and intensity of tobacco control at the population level: a comparison of five European countries
  198. Leistungen, mediierende Faktoren und Outcomes der Prävention tabakrauch- oder alkoholbezogener Erkrankungen
  199. Nutzung neuer Technologien zur bevölkerungswirksamen Prävention riskanten Alkoholkonsums
  200. Bevölkerungswirksamkeit von Prävention
  201. Adherence to the principles of Motivational Interviewing, clients' characteristics and behavior outcome in a smoking cessation and relapse prevention trial in women postpartum
  202. Welchen Umgang mit dem Thema Rauchen wünschen sich schwangere Frauen in der medizinischen Versorgung?
  203. Population impact—Definition, calculation and its use in prevention science in the example of tobacco smoking reduction
  204. Verbesserung der medizinischen Versorgung durch die Förderung der Intention zur Änderung gesundheitsriskanten Verhaltens
  205. Postpartum return to smoking: Identifying different groups to tailor interventions
  206. Supporting the intention to change health risk behaviors
  207. Warum Frauen nach der Geburt ihres Kindes wieder mit dem Rauchen anfangen
  208. Midwives’ attitudes to counselling women about their smoking behaviour during pregnancy and postpartum
  209. Post-partum intention to resume smoking
  210. An Intervention to Support Postpartum Women to Quit Smoking or Remain Smoke-Free
  211. Das Rauchverhalten von Jugendlichen im Vergleich von bevölkerungsrepräsentativ, regional oder selektiv erhobenen Daten und Implikationen für die Prävention
  212. Measuring Activities in Tobacco Control Questionnaire
  213. Validity of overweight and obesity in a nation based on self-report versus measurement device data
  214. Attitudes towards smoking policies and tobacco control measures in relation to smoking status and smoking behaviour
  215. Smoking status, cigarettes per day, and their relationship to overweight and obesity among former and current smokers in a national adult general population sample
  216. Rauchen vor, während und nach der Geburt: längsschnittliche Daten einer Bevölkerungsstichprobe
  217. Tabakrauchexposition in der Wohnung und stationäre Behandlungen von Kindern unter 5 Jahren in Deutschland
  218. Comparison of a Population-Based Sample of “Risky Drinking” Smokers and Groups Consuming Just One Substance
  219. Interventionen zur Prävention gesundheitlicher Risiken durch Tabakrauch für Schwangere, Frauen post partum und deren Kinder
  220. Bereitschaft von Frauen, nach der Geburt ihres Kindes an einer individuellen Beratung zum Rauchen teilzunehmen
  221. Short report: Paediatricians' attitude towards counselling parents postpartum about their smoking behaviour
  222. Verhaltensspezifische Determinanten der Veränderungsmotivation bei multiplem Risikoverhalten
  223. STRENGTH OF THE RELATIONSHIP BETWEEN TOBACCO SMOKING, NICOTINE DEPENDENCE AND THE SEVERITY OF ALCOHOL DEPENDENCE SYNDROME CRITERIA IN A POPULATION-BASED SAMPLE
  224. THE READINESS TO CHANGE QUESTIONNAIRE IN SUBJECTS WITH HAZARDOUS ALCOHOL CONSUMPTION, ALCOHOL MISUSE AND DEPENDENCE IN A GENERAL POPULATION SURVEY
  225. Prävention von Gesundheitsstörungen aufgrund von Tabakrauchen und Alkoholkonsum – der Beitrag zur Gesundheitsversorgung mit besonderer Berücksichtigung des Transtheoretischen Modells der Verhaltensänderung