Neuron Structure: Parts of a Neuron

In this video I describe the major parts of a neuron and briefly explain the function that each part serves. Don’t forget to subscribe to the channel to see future videos! Have questions or topics you’d like to see covered … Read More

Ethical Guidelines for Psychological Research

In this video I explain the major ethical guidelines for conducting research in psychology with human subjects including informed consent, freedom from coercion, protection from harm, risk-benefit analysis, anonymity and/or confidentiality, and debriefing. Don’t forget to subscribe to the channel … Read More

Internal Validity

In this video I explain the concept of internal validity and how it acts as a checklist for considering whether an independent variable has been effectively manipulated, a dependent variable has been measured without bias, and a clear pattern can … Read More

Frequency Distributions, Normal Curves, and Skew

In this video I explain how a frequency distribution can create a visual representation of our data. I also describe a normal curve or “bell curve” and what it means for mean, median, and mode. Then I consider skewed distributions … Read More

Understanding Significance and P-values

In this video I explain the concept of significance and how it relates to both effect size, sample size, and the law of large numbers. The role of a p-value in describing the likelihood of data is explained with an … Read More

Measures of Variance: Range and Standard Deviation

In this video I describe two more descriptive statistics, both of which are measures of variance: the range and the standard deviation. I explain what the standard deviation tells us about a distribution of scores and how it is calculated. … Read More

Difference between a Theory and a Hypothesis

In this video I describe the difference between a theory and a hypothesis. I also explain how evidence can support or refute a hypothesis but can never prove a theory. Don’t forget to subscribe to the channel to see future … Read More

The Experimental Method

In this video I explain the experimental method and how the combination of manipulation and random assignment can help to eliminate the third variable problem. I also explain why random assignment helps avoid self-selection and bias so that we can … Read More

The Third Variable Problem

In this video I explain the third variable problem in correlational studies, how matched samples and matched pairs can be used to eliminate a possible third variable, and why measurement alone can never truly solve the third variable problem. Don’t … Read More

Real and Illusory Correlations, Scatterplots, and Causation

In this video I explain the dangers of illusory correlations and confirmation bias, correlational studies, patterns of variation, r-values, scatterplots and conclusions about causation. Try guessing the r-value from a scatterplot at www.guessthecorrelation.com Don’t forget to subscribe to the channel … Read More