1. Property: Peer-reviewed - Description: Peer-reviewed research refers to scholarly articles that have been evaluated by experts in the field before publication. This process helps ensure the quality and credibility of the research. 2. Property: Empirical - Description: Empirical research involves the collection and analysis of data or evidence to support or refute a hypothesis. This type of research is based on observations and experience rather than theory or logic. 3. Property: Qualitative - Description: Qualitative research focuses on understanding the underlying reasons, opinions, and motivations behind a particular phenomenon. This type of research involves the use of open-ended questions, interviews, and observations to gather subjective data. 4. Property: Quantitative - Description: Quantitative research involves the collection and analysis of numerical data to examine relationships and patterns in a specific population. This type of research often uses statistical methods to analyze data and draw conclusions. 5. Property: Longitudinal - Description: Longitudinal research is a study design that involves collecting data from the same group of participants over an extended period of time. This type of research allows researchers to observe changes and trends over time.