methodology.pdf - visual overview of methodology. methodology-details.pdf - detailed description of methodology. literature-review.xlsx - integrated list of studies extracted from Scopus and Google Scholar; inclusion criteria applied in the literature review; data extracted from secondary studies, primary studies applying systematic and tailored assessment/evaluation criteria to RE methods for PbD/GDPR compliance, and three studies focused on intersection between requirements and system specification; mapping of the extracted data and synthesized RE method characteristics (MCs). LR7_mapping-IN1-IN2.pdf - list of assessment/evaluation criteria extracted during the literature review from primary studies that have not used any systematic approach to assessment/evaluation of RE methods for PbD/GDPR compliance; mapping of evaluation tasks extracted during the literature review to RE method goals (MGs) synthesized from the results of the interviews. interview-questions.pdf - questions used in the interviews. interview-results.pdf - results of the interviews structured according to the Goal-Question-Metric approach. Goal-centric assessment approach to requirements (RE) methods for Privacy by Design (PbD): assessment-MG1.pdf - Requirements Engineering Method Goal (MG)1: Facilitating GDPR compliance throughout SDLCassessment-MG2.pdf - Requirements Engineering Method Goal (MG) 2: Achieving understandability of GDPR in software engineeringassessment-MG3.pdf - Requirements Engineering Method Goal (MG) 3: Enabling decisionmaking on complianceassessment-MG4.pdf - Requirements Engineering Method Goal (MG) 4: Documenting the required informationassessment-MG5.pdf - Requirements Engineering Method Goal (MG) 5: Facilitating compliance governanceassessment-MG6.pdf - Requirements Engineering Method Goal (MG) 6: Enabling response to changesassessment-MG7.pdf - Requirements Engineering Method Goal (MG) 7: Achieving verifiability&validity of complianceassessment-MG8.pdf - Requirements Engineering Method Goal (MG) 8: Achieving effective communication on GDPR compliance implementationassessment-MG9.pdf - Requirements Engineering Method Goal (MG) 9: Facilitating GDPR compliance-related proceduresassessment-MG10.pdf - Requirements Engineering Method Goal (MG) 10: Addressing business concerns in PbD implementationassessment-MG11.pdf - Requirements Engineering Method Goal (MG) 11: Facilitating risk and security management