In this video I explain how skewness in a sample may be caused by a floor or a ceiling effect, in which the measurement isn’t able to capture variability at the low or high end of a population’s distribution. A … Read More
Skewness – Positive & Negative Skew
In this video I explain one way in which a distribution can deviate from normality, which is skewness. I explain the difference between positive and negative skew, and how these can be seen in histograms, stem and leaf displays, and … Read More
How to Remember Important Names in the History of Psychology
In this video I provide example mnemonics, or memory aids, for remembering important names in the history of psychology including Wilhelm Wundt, Edward Titchener, William James, G. Stanley Hall, Mary Whiton Calkins, Margaret Floy Washburn, Sigmund Freud, and B.F. Skinner, … Read More
Histograms & Frequency Polygons
In this video I explain the difference between histograms and bar charts, look at the creation of histograms and frequency polygons for continuous variables, and then discuss why we want to get a sense of the shape of a distribution … Read More
Exploratory Data Analysis: Box & Whisker Plots
In this video I describe box-and-whisker plots, or boxplots, developed by John Tukey. First we’ll look at a simple box-and-whisker plot, then we’ll see some variations depending on the data, some different sets of terminology that can be used when … Read More
Exploratory Data Analysis: Stem & Leaf Displays
In this video I explain stem-and-leaf displays or stemplots, which are part of exploratory data analysis developed by John W. Tukey. I explain the basic design of stem-and-leaf displays as well as several variations including back-to-back stem-and-leaf displays and stretched … Read More
Social Psychology Practice Questions
This video covers 10 practice multiple choice questions on social psychology and includes questions related to conformity, cultural dimensions, persuasion, attribution theory, and more. I hope this can help you to review your knowledge and understanding, let me know if … Read More
Developmental Psychology Practice Questions
This video covers 10 practice multiple choice questions on developmental psychology and includes questions related to Piaget’s theory of cognitive development, parenting styles, attachment, and more. I hope this can help you to review your knowledge and understanding, let me … Read More
Emotion & Motivation Practice Questions
This video covers 10 practice multiple choice questions on emotion & motivation and includes theories of emotion, drives, hunger, motivational conflicts, and more. I hope this can help you to review your knowledge and understanding, let me know if you … Read More
Personality Psychology Practice Questions
This video covers 10 practice multiple choice questions on personality psychology and includes psychoanalytic and psychodynamic approaches, trait-based theories, projective techniques, and more. I hope this can help you to review your knowledge and understanding, let me know if you … Read More
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