Problem Formulation and Techniques
2. Hypothesis formulation and testing: Defining hypotheses and research assumptions
2.1. Steps in Hypothesis Formulation and Testing:
- Identify the research question: Clearly define the central question the study aims to answer.
- Develop the hypothesis: Formulate a testable statement predicting a relationship between variables based on the research question.
- State the null hypothesis: Formulate a statement that there is no significant effect or relationship between variables.
- Collect data: Gather relevant data using appropriate research methods.
- Analyze data: Use statistical tests to evaluate whether the data supports or contradicts the null hypothesis.
- Interpret results: Draw conclusions based on the analysis, considering the significance level and limitations of the study.
Example:
- Research question: Does regular exercise improve cognitive function in older adults?
- Hypothesis: Individuals who engage in regular exercise will demonstrate significantly better cognitive performance compared to those who do not exercise regularly.
- Null hypothesis: There is no significant difference in cognitive performance between individuals who exercise regularly and those who do not.
Important considerations:
- Specificity:
A good hypothesis should be clear, concise, and specific enough to be testable.
- Falsifiable:
The hypothesis should be able to be proven incorrect based on empirical evidence.
- Relevance:
The hypothesis should align with the research question and be relevant to the study's objectives.