Overview of the research -- Strengths, weaknesses, and challenges -- A research agenda for the field -- Identifying a research question -- Choosing a research design -- Selecting a sample -- Qualitative research -- Observational research -- Clinical trials -- Clinical trials with religious interventions -- Definitions -- Measurement I -- Measurement II -- Statistics I : general considerations -- Statistics II : statistical tests and approaches -- Confounders, explanatory variables, and moderators -- Models and mechanisms -- Statistical modeling -- Publishing results -- Funding for research -- Writing a grant.