Research Methodologies: Qualitative, Quantitative, and Mixed Approaches

Nature of the Information Used

Research Approaches

• Qualitative Studies: Focus on internal aspects (attitudes, "why?"). Uses small samples and methods like focus groups.
• Quantitative Studies: Focus on numerical analysis ("how much?", "where?"). Uses statistical precision and larger samples.
• Mixed Studies: A combination of both approaches.

Research by Role

• Descriptive Research: Provides broad information; often the starting point.
• Exploratory Research: Identifies problems or opportunities and tests hypotheses.
• Explanatory Research: Detects cause-and-effect relationships between variables.
• Predictive Research: Quantitative estimation of magnitudes over time (e.g., demand, prices).
• Control Research: Analyzes the results of decisions already made.

Qualitative vs. Quantitative Methods

Qualitative Methods

• Definition: Understands why and how (underlying meanings). Uses small samples that are not statistically extrapolable.
• Limitation: Produces information only on the particular cases studied; general conclusions remain hypotheses.

Quantitative Methods

• Definition: Systematic empirical investigation of observable phenomena via statistical, mathematical, or computational techniques.
• Characteristics:
  • Uses scientific methods.
  • Allows extrapolation through statistical sampling procedures.
  • Purpose is always quantification.

Personal Interviews

Advantages

• High response rates: The face-to-face nature encourages participation, as respondents can interact directly with the subject (e.g., product testing).
• Tolerable longer interviews: Allows for deeper probing; respondents are more comfortable speaking than writing.
• Better observation: Provides opportunities to observe attitudes and behaviors toward a product.

Disadvantages

• High costs: Face-to-face surveys are significantly more expensive than online or paper-based methods.
• Time-consuming: Data collection takes longer, often requiring travel to meet respondents.

Type of Information Used

• Primary Data: Specific information created for a particular research project; it is new and original.
• Secondary Data: Information previously processed for other purposes; it is not necessarily new.