Scientific Methodologies

Scientific Methodologies

The Scientific Method

  • Defining the question: Identifying the area of research and formulating a specific question to guide the investigation.

  • Background research: Conducting literature reviews, studying previous research to understand the context of your study.

  • Formulating hypotheses: Based on the result of your background research, create a defined, testable hypothesis.

  • Experimentation: Design and execute an experiment to test your hypothesis. This should include a controlled environment where you manipulate a single variable at a time.

  • Data collection: Gather measurable, empirical evidence during your experiment. This should be rigorous to ensure reliability.

  • Analysis and interpretation: Analyse the data collected and interpret whether it supports or disproves your hypothesis. Always use statistical methods to increase objectivity of your interpretation.

  • Draw conclusions: Based on interpretation, draw a logical conclusion. State whether the data supports the hypothesis or not.

  • Communicate results: Present your findings in a clear, concise manner adhering to scientific reporting standards. Always include your methodology, for the benefit of future research.

Experimental Design

  • Controls: Key to obtaining reliable results. Controls are unchanged factors that can be used as a comparison.

  • Replication: Essential to ensure reliability of results. It minimises the effects of random variations, and allows precision and validity.

  • Randomisation: Used in experimental design to eliminate bias, ensuring that experimental units have an equal chance of receiving each treatment.

  • Statistical analysis: Vital for interpreting experimental results. It allows scientists to determine if variations observed could be due to chance or to the manipulations made.

Data Collection Techniques

  • Observation: Watching and recording behaviour or events in their natural setting without interfering.

  • Experiments: Manipulating one variable to determine its effect on another. Ensures causality and control.

  • Surveys and Questionnaires: Useful for collecting large amounts of information. Important to ensure they are correctly designed to avoid biases and inaccuracies.

  • Sampling: The process of selecting a subset of individuals from a population to test. Representative sampling is key to valid results.

Ethical Considerations in Environmental Science Research

  • Informed consent: Necessary when subjects are involved in your research.

  • Non-maleficence: Principle that research should not harm the object or subject being studied.

  • Sustainability: Consider the environmental impact of your research, aim for sustainable methods.

  • Accuracy: Disclosure of limitations and findings accurately and honestly.

  • Data protection: Confidentiality of the data and individuals should be maintained.