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About this Lecture
This fifth lecture focuses on correlations, starting by giving four bivariate correlations, meaning that they are made up of an association between just two variables, as examples. The first essential characteristic introduced is direction. This includes a discussion of Pearson’s R, a numeric index which quantifies the linear relationship present between two variables. Scatterplots are then shown as useful methods of presenting data of this type. Lastly, Dr Allen uses one of the example correlations, linking conversation type and happiness, to demonstrate the importance of correctly interpreting correlations, to avoid incorrectly interpreting a relationship as causal.
In this course, Dr Peter Allen (University of Bristol) explores the experimental structure and methodology that underlies much of the research that informs our psychological theories. The first lecture introduces the gold standard in psychological research: the true experiment. The second lecture breaks down the term ‘experiment’ by highlighting the definitions of quasi and natural experiments. The third lecture brings to light the commonly practiced alternative to the experiment, in the form of observational studies – a key aspect of a natural experiment. The fourth lecture builds on lecture three by focusing on the self-report methods which are often used in observational studies. The fifth lecture moves to the post-procedure aspect of experimentation by approaching correlations and what they mean in the analysis of results. The sixth lecture brings to light content analysis, a lesser studied qualitative method of categorising and analysing experimental results. The seventh and final lecture on this course addresses case studies, the divisive method of study which is equal parts invaluable and useless!
Dr Peter Allen is a senior lecturer in the School of Psychological Science at the University of Bristol. In recent years, Dr Allen’s research has centred around evidence-based learning and teaching in higher education. A key focus has been on statistical literacy, specifically on understanding the barriers that psychology students can face when learning research methods and statistics. A goal of this research is to derive strategies that can help students become better researchers and scientific thinkers.
Cite this Lecture
Allen, P. (2022, January 07). Research Methods – Experimental Methodology - Correlations [Video]. MASSOLIT. https://massolit.io/courses/experimental-methodology/correlations
Allen, Peter. "Research Methods – Experimental Methodology – Correlations." MASSOLIT, uploaded by MASSOLIT, 07 Jan 2022, https://massolit.io/courses/experimental-methodology/correlations