Research methods, Portfolio formation, Timeseries and Cross-sectional Data Analysis, Academic writing; Research philosophy; Mixed method; Multiple triangulation; Scale development and validation; Item response theory; Rasch Model; Systematic Literature review, Bibliometric analysis, Factor analysis; EFA, CFA, SEM, ANN, BLR, ARDL, PCA, Qualitative data analysis.\r\n Nvivo 12\r\n Atlas.ti 9\r\n SPSS 26\r\n AMOS 26\r\n Eviews 13\r\n SmartPLS 4\r\n STATA 17\r\n Microsoft Excel and Access 2019\r\n R 3.5\r\n Minitab 18